Apparatus and method for cancelling opposing torsional forces in a compound balance

Spring mounting for sash window tensioning arrangements

BLOCK AND TACKLE WINDOW BALANCE WITH BOTTOM GUIDE ROLLER

Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.

SIDE LOAD BALANCE CORD TERMINAL CLIP

Disclosed are apparatus for a block and tackle window balance including a terminal clip to be incorporated in single and double hung window assemblies. In one embodiment the terminal clip includes a first end portion defining an opening for passing a terminal end of a cord therethrough, a second end portion disposed remotely from the first end portion, and an intermediate portion including a hook and extending between the first and second end portions.

TAMBOUR DOOR AND HOUSING ASSEMBLY

A tambour or roll-top door and housing assembly is provided herein. The housing includes a pair of spaced apart tracks defining between them a path having a generally vertical first section with top and bottom parts, a generally horizontal second section near the top part of the first section, and a curved third section interconnecting the first and second sections. The tambour door has top and bottom parts, and side edges which are slidably disposed in the tracks of the housing, the door being movable along the path so defined. The door comprises a plurality of longitudinal segments, each having opposite ends which define the side edges of the door, these segments being situated side-by-side with their adjacent edges pivotally engaged in a hinge coupling with a pitch distance P between the couplings. The improvement provided a broad aspect of this invention comprises a shaft mounted in the housing and situated generally parallel to the door segments. A gear means comprising a first gear ...

CURL SPRING SHOE BASED WINDOW BALANCE SYSTEM

A window balance system for a tilt sash uses a pair of constant force curl springs having curled convolutions carried by sash shoes and free end regions mounted in sash shoe channels above the region of travel of the shoes. The recurl tendency of the springs imparts a lift to the curled spring convolutions, and the shoes transmit the lift to the sash. The springs recurl into the convolutions as the shoes rise and uncurl from the shoes into the shoe channels when the shoes move downward, and neither movement requires the springs to slide frictionally within the shoe channels. Each shoe is preferably formed of two identical halves that are assembled to trap the curl spring along with a cam that locks the shoe when the sash tilts.

CORNER LOCKING CARRIER SHOE FOR TILT SASH

A tilt sash counterbalance system has a carrier shoe with a locking cam that moves a locking component to a corner-to-corner locking position within a shoe channel. This is done by moving the locking component to a locked position where the locking component simultaneously increases both the width and the thickness of the carrier shoe. This presses the locking component into one inside corner of the shoe channel while pressing an opposite edge of the carrier shoe in a diagonally opposite direction against a diagonally opposite inside corner of the shoe channel.

ПОДЪЕМНОЕ УСТРОЙСТВО

Подъемное устройство содержит нагруженный скользящий башмак, приспособленный к перемещению со скольжением относительно элемента открываемой конструкции; подъемный рычаг, имеющий два конца, один из которых приспособлен к шарнирному соединению с элементом конструкции, а другой конец связан с упомянутым скользящим башмаком; и тормозное устройство, содержащее по меньшей мере один тормозной башмак, перемещаемый со скольжением по соответствующей тормозной поверхности упомянутого подъемного устройства, где посредством упомянутого тормозного устройства модулируют силу, возникающую в результате действия нагрузки на упомянутый нагруженный скользящий башмак. Регулировочное устройство приспособлено к регулированию упомянутого прогрессирующего модулирования упомянутой силы, возникающей в результате действия нагрузки на упомянутый нагруженный скользящий башмак, и содержит элемент для регулирования, посредством которого, при использовании его пользователем, приводят в действие упомянутое регулировочное ...

Window sash positioner

A positioner for a movable window sash embodies a guide bracket carried by the sash with one side of the guide bracket spaced from and facing an adjacent side of a window frame and extending in a plane which is inclined relative to a plane extending in the direction of movement of the sash with the opposite side of the guide bracket being parallel to said one side thereof. A wedge-like member has a first surface in sliding engagement with said one side of the guide bracket. A second surface of the wedge-like member extends parallel to and faces the adjacent side of a window frame and is movable into and out of engagement with the window frame in response to sliding movement of the wedge-like member in opposite directions. An actuator mounted for sliding movement along said opposite side of the guide bracket is operatively connected to the wedge-like member to move it in opposite directions. A resilient member urges the wedge-like member into engagement with the adjacent side of the window ...

Spring balancer for pivotable cover lid

A balancer is installed between a fixed body and a lid attached to the fixed body pivotably through a horizontal revolution axis. This balancer is a spring balancer for a pivotable cover lid having a compression coil sring which acts in compression or extension and a rod which transfers into a metallic cylinder according to the revolution of the cover lid. Further, this balancer has the overall characteristics of the compression coil spring and the sliding friction characteristics of the rod.

Automatic window control

Balancing spring system for sliding window sash

A balancing spring system for facilitating the opening and the closing of a window sash assembly slidably mounted in channels of opposed window jambs comprises a connector strip. The connector strip has a front surface and a rear surface. The connector strip also has slots extending from the front surface to the rear surface. The connector strip has a connecting head section at a bottom thereof, adapted for connection to the window sash assembly. Curled ribbon springs are adapted to be mounted idle and free to rotate in each of the channels of the window jambs. The curled ribbon springs each have a free end comprising an enlarged head portion at a tip thereof, for connecting the curled ribbon springs to the slots of the connector strip, whereby the curled ribbon springs apply an upward force to the window sash assembly.

Block And Tackle Balance Assembly With Brake Shoe

A sash balance brake shoe assembly ( 2 ) is disclosed for counterbalancing a sash window ( 3 ) slidably supported within a master frame ( 5 ). The assembly generally includes a balance assembly preferably in the form of a block and tackle balance assembly ( 7 ) and a brake shoe ( 28 ). The balance assembly has a balance channel ( 6 ). The brake shoe ( 28 ) has an extension member ( 36 ) that is received by the balance channel ( 6 ). A fastener ( 42 ) directly connects the brake shoe ( 28 ) to the balance channel ( 6 ).

WINDOW COUNTER-BALANCING CONSTRUCTION

Window balancer

Block and tackle balance with integral non-rotating pulley system

DEVICE TO THE COUNTERWEIGHT FOR A TURNING FURNITURE DOOR

SPRING BALANCE ASSEMBLY

The present invention provides a balance assembly (10) for use with a sash window assembly ( 104) slidable within a master frame (110). The balance assembly (10) generally includes a plate (20), at least one coil (40), and a shoe or pivot brake assembly (60). The plate (20) is adapted to be attached to the master frame (110). The spring (40) has a coiled portion (42), an intermediate portion (43), and a free portion (44). The coiled portion (42) of the spring (40) is rotatably supported by a support member (30) extending from the plate (20). The free portion (44) of the spring (40) has a curved configuration with a curved end (46). The pivot brake assembly (60) has at least one slot (76) adapted to receive and retain the free portion (44) of the spring (40). The slot (76} defines a protrusion (83) that engages the free portion (44).

SNAP LOCK BALANCE SHOE AND SYSTEM FOR A PIVOTABLE WINDOW

Disclosed are apparatus for a snap lock balance shoe and system to be incorporated in pivotable double hung windows. In one embodiment, the snap lock balance shoe includes a pair of retractable tabs that partially extend through openings within an inverted window balance.

PULLEY MOUNT FOR WINDOW BALANCE SYSTEM

A mount for pulleys used in a block and tackle and spring counterbalance system for a window sash comprises a pulley support plate arranged within a channel containing the spring and the block and tackle. A shoulder rivet has a shaft fitting through a hole in the plate, and a shoulder abutting against the plate around the hole and extending from one side of the plate. A pulley is mounted on the shoulder between the plate and a head for the rivet. A bushing is mounted on the rivet shaft on the other side of the plate, and another pulley is mounted on this bushing between the plate and a riveted end of the rivet. The pulleys are so mounted on the rivet and supported on the plate within the channel that a cord for the block and tackle can be reeved freely over the pulleys from an open side of the channel.

BLOCK AND TACKLE SASH BALANCE SHOE

A sash balance shoe housing designed to move along a window frame contains a spring attached to the housing and to a first pulley block that is movable along the housing, a second pulley block fixed against movement along the housing integrally molded with a brake mechanism bearing surface for supporting a cam designed to connect to a sash, and a cord attached by one end to one of the first pulley block and the second pulley block, wrapped around at least one pulley in each block and extending from the housing for attaching the other end to the window frame.

SNAP LOCK BALANCE SHOE AND SYSTEM FOR A PIVOTABLE WINDOW

Disclosed are apparatus for a snap lock balance shoe and system to be incorporated in pivotable double hung windows. In one embodiment, the snap lock balance shoe includes a pair of retractable tabs that partially extend through openings within an inverted window balance.

BLOCK AND TACKLE WINDOW BALANCE WITH BOTTOM GUIDE ROLLER

Disclosed are apparatus for a block and tackle window balance to be incorporated in single and double hung window assemblies. In one embodiment the block and tackle window balance includes a roller secured within a bottom guide to increase range of travel of a window sash.

STATIC AIR DAM

The static air dam includes at least one mounting feature, which is preferably at least one hole or slot to allow a fastener, such as a screw, bolt, rivet, weld, or other similar attachment devices, to secure the air dam to a wall of a jamb channel. Air passage through the jamb channel is prohibited or at least substantially inhibited by the static air dam that is designed to approximate the size and dimensions of the cross section of the jamb channel. At least one side of the air dam includes a tab or similar structure for securing the free end of the curl spring of a curl spring balance. The air dam includes integrally formed reinforcing elements that either abut or are adjacent to the side walls of the jamb channel. The air dam preferably includes a pair of flexible projections for engaging ears on the curl spring carrier.

WINDOW BALANCE ASSEMBLY

... ²²A window balance assembly may include a carrier, a spring element, and a ²mounting ²bracket. The spring element may include first and second portions. The first ²portion may ²be coupled to the carrier. The mounting bracket may engage the second portion ²of the ²spring element and may selectively engage the carrier. The mounting bracket ²may ²include a first mounting surface disposed at a non-perpendicular angle ²relative to an ²exterior surface of carrier when the window balance assembly is in an ²uninstalled ²configuration. The first mounting surface may be substantially parallel to the ²exterior ²surface of the carrier when the window balance assembly is in an installed ²configuration ²and the mounting bracket is disengaged from the carrier.² ...

WINDOW BALANCE ASSEMBLY

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

WINDOW BALANCE ASSEMBLY

... ²²A window balance assembly may include a carrier, a spring element, and a ²mounting ²bracket. The spring element may include first and second portions. The first ²portion may ²be coupled to the carrier. The mounting bracket may engage the second portion ²of the ²spring element and may selectively engage the carrier. The mounting bracket ²may ²include a first mounting surface disposed at a non-perpendicular angle ²relative to an ²exterior surface of carrier when the window balance assembly is in an ²uninstalled ²configuration. The first mounting surface may be substantially parallel to the ²exterior ²surface of the carrier when the window balance assembly is in an installed ²configuration ²and the mounting bracket is disengaged from the carrier.² ...

COIL SPRING COUNTERBALANCE HARDWARE ASSEMBLY AND CONNECTION METHOD THEREFOR

An improved coil spring counterbalance assembly embodying a coil spring support structure that provides a cooperatively radiused restraining shoe against which the uninterrupted smooth external circumferential surface of the coil spring ribbon rotationally operates in extension and retraction thereof during counterbalanced sash movement, thereby eliminating both the clicking sound and spring rotational cyclic vibrational shocks otherwise caused by the spring interior ribbon core tail ending riding over the top of a spring core support hub, in addition to a multiple coil spring connection method for improved successive affixment of extended coil spring ribbons one to the other and in turn to the sash attached balance shoe connector therefor when more than one coil spring is required in order to effect proper sash counterbalancing.

SPRINGS FOR SASH FRAME TENSIONING ARRANGEMENTS

A coiled ribbon spring comprising a coiled ribbon spring body and, at a free end thereof, a tongue portion having first engagement means for operative connection to an object to be tensioned, said tongue having at a location between said first engagement means and the coiled ribbon spring body, second engagement means co-operable with first engagement means provided on another coiled ribbon spring. Also an assembly of such springs disposed one above the other working in concert e.g. in pairs.

CORNER LOCKING CARRIER SHOE FOR TILT SASH

A tilt sash counterbalance system has a carrier shoe with a locking cam that moves a locking component to a corner-to-corner locking position within a shoe channel. This is done by moving the locking component to a locked position where the locking component simultaneously increases both the width and the thickness of the carrier shoe. This presses the locking component into one inside corner of the shoe channel while pressing an opposite edge of the carrier shoe in a diagonally opposite direction against a diagonally opposite inside corner of the shoe channel.

BALANCING ARRANGEMENT FOR DOUBLE HUNG WINDOWS

File No. C8966 IMPROVED BALANCING ARRANGEMENT FOR DOUBLE HUNG WINDOWS A balancing arrangement for double hung windows is disclosed including a spring arrangement supported by a spring holder installed in a window jamb and a balance shoe installed in a window sash. The spring holder is adapted to engage a detent in the balance shoe installed in the top window sash, whereby displacement of the top sash when closed is prevented to maintain a weather stripping seal between the bottom and top sashes at the horizontal center of the window when the bottom sash is lowered for closing against the compression force of the seal. The opening of the top sash is unaffected, other than a slightly greater force being required to bypass the engagement of the detent by the spring holder.

Inverted block and tackle window balance

Pulleys of a block and tackle window balance include hub steps that interact with other components to reduce the introduction of dirt and dust particles into areas vulnerable to wear. The hub steps of some of the pulleys are recesses formed about the axial bores of the pulleys that mate with protrusions on an axle and a washer. The hub steps of other pulleys are protrusions that abut a support plate and heads of rivets that act as axles. The hub steps allow inverse mounting of the window balance so that the balance can be mounted in a shoe channel for movement with a sash of the window, attached to the sash shoe, and the cord can be attached to the jamb or frame, thus increasing sash travel.

Winged jamb liner

A jamb liner is mounted in the side jamb tracks of a window frame to mount window units of double hung windows for slidable movement between opened and closed positions. The liner includes transversely spaced channel guides, each guide mounting a guide member that is attached to the adjacent window unit. Flanges are joined to the guides for forming a close fit with the adjacent window unit while, to each guide, there is joined a wing to form a seal with the web of the adjacent jamb to block fluid flow between the window units and the side jamb from one transverse side of the unit sash to the other. The wings of the liner are arcuately curved to transversely diverge from one another in a direction toward the jamb web. The wings are of a substantially greater resiliency than the rest of the liner, said rest of the liner being semi-rigid and made of extruded plastic.

Load counterbalancing coiled wire spring assembly

A load counterbalancing coiled wire spring assembly adapted to provide predetermined nonuniform bending stress induced torsional load supporting force in response to load induced longitudinal spring wire displacement.

SEALING PLUG FOR WINDOW JAMB OF GUILLOTINE WINDOW

A sealing plug for a block-and-tackle balance comprises a sealing member having an outer periphery shaped so as to conform to an inner surface of a channel of a window jamb in which the block-and-tackle balance is accommodated. An opening is defined in the sealing member allowing a cord of the block-and-tackle balance to pass therethrough such that the cord is movable with a movement of a window panel. A connector configuration in the sealing member and allows the sealing member to be releasably secured to a bottom end of the block-and-tackle balance.

УРАВНОВЕШИВАЮЩЕЕ УСТРОЙСТВО ДЛЯ ПОДЪЕМНЫХ ВОРОТ

Изобретение относится к области строительства, а именно к конструкциям шторных ворот. Изобретение позволит обеспечить уравновешивания крутящих моментов. Уравновешивающее устройство для подъемных ворот содержит пружинящий элемент, тяговый элемент и намоточное устройство. Один конец пружинящего элемента выполнен с возможностью закрепления на полу. Тяговый элемент одним концом закреплен на пружинящем элементе, а другим - на намоточном устройстве. Намоточное устройство выполнено с возможностью соединения с приводом подъемных ворот. Тяговый элемент выполнен с возможностью намотки на намоточное устройство и размотки с него таким образом, что пружинящий элемент максимально натянут, когда полотно подъемных ворот находится в закрытом положении, и по существу разгружен, когда полотно находится в открытом положении. Обращенный к намоточному устройству конец тягового элемента имеет меньшую ширину, чем конец, обращенный к пружинящему элементу. Намоточное устройство содержит вал и установленное на нем ...

Window balance

Modular spring support mounting for a sash window

A modular spring support mounting (24) for a sash window counterbalance arrangement comprises at least first (30a) and second (30b) spring support mounting elements each for supporting a coil spring. The second spring support mounting element includes a pair of wedged shaped cross section projections (34). The first spring support mounting element includes an interengagement fitting (36) which engages the pair of wedged shaped cross section projections to in use securely interconnect the first and second spring support mounting elements together. Also disclosed is a method for installing such modular spring support mounting elements.

Sash spring balance

A spring balance for counteracting the weight of heavy window sashes includes both a torsion spring and a tension spring. The two springs are separated by a rigid tube. One end of each spring is connected to an end of the rigid tube. A spiral member engages a follower carried by the other end of the torsion spring and includes a stop along its length for engaging an anchor carried by the other end of the tension spring. The spiral member can be attached by conventional means to a shoe or other connection to the window sash.

COIL AND DROP PROTECTION ARRANGEMENT FOR DOOR COUNTERWEIGHT SYSTEM

COUNTERWEIGHT MECHANISM FOR A HUBTOR

Extension spring system for an overhead door

EXTENDED TRAVEL WINDOW BALANCE

An extended travel balance including a channel having a first end and a second end, a bottom pulley connected at the second end of the channel, and a bottom guide connectable at a location between the first end and the bottom pulley, and preferably between the bottom pulley and fixed pulleys of the end carriage. The bottom guide and top guide are not part of the tensioned parts in the channel and can, therefore, be stored separately from the channel with its tensioned parts-e.g.., springs, pulleys, and pulley cord. Multiple bottom guide and top guide configurations can be mated to the channel with its tensioned parts without interfering with the operation of either. Fixed pulleys and bottom pulley of the end carriage are advantageously connected by an intermediate tensioned connector with all said parts held in tension between and by the connection of the bottom pulley to the tensioned pulley cord and the connection of the bottom pulley to the second end of the channel. The bottom guide ...

SPRING MOUNTING FOR SASH WINDOW TENSIONING ARRANGEMENTS

A sash window counterbalance spring mounting arrangement for fitment into a channel section within a window jamb. The arrangement comprises at least two coiled ribbon springs, a spring support mounting comprising support means for each of said at least two coiled ribbon springs to support and locate said coiled ribbon springs to the spring support mounting, and locating means adapted, in use, to locate the spring support mounting within and to said channel section. The spring support mounting comprises a single integral component from which the support means depend and from which the at least two springs are located and supported. The support means may comprises sets of pairs of triangular cross section integral projections which extend from the rear surface of the main body portion. An end portion of the main body portion of the support mounting is curved. Wing projections may extend from the front surface of the main body of the spring support mounting. On the longitudinal end of the ...

BLOCK AND TACKLE BALANCE ASSEMBLY WITH BRAKE SHOE

A sash balance brake shoe assembly (2) is disclosed for counterbalancing a sash window (3) slidably supported within a master frame (5). The assembly generally includes a balance assembly preferably in the form of a block and tackle balance assembly (7) and a brake shoe (28). The balance assembly has a balance channel (6). The brake shoe (28) has an extension member (36) that is received by the balance channel (6). A fastener (42) directly connects the brake shoe (28) to the balance channel ...

A MODULAR SPRING MOUNTING FOR A SASH WINDOW COUNTERBALANCE ARRANGEMENT

A modular spring support mounting (24) for a sash window spring counterbalance arrangement (16). The modular spring support mounting (24) comprises at least a first spring support mounting element (30b) and a second spring support mounting element (30a) each for supporting a respective coil spring (22). The first spring support mounting element (30b) includes a pair of wedged shaped cross section projections (34). The second spring support mounting element (30a) includes an interengagement fitting (36) which engages the pair of wedged shaped cross section projections (34) to in use securely interconnect the first and second spring support mounting elements (30b,30a) together. Also a method of installing such a modular spring mounting (24) in which the spring mounting elements (30b,30a) are laterally slidingly engaged to securely interlock the elements (30b,30a) together.

EXTENDED TRAVEL WINDOW BALANCE

An extended travel balance including a channel having a first end and a second end, a bottom pulley connected at the second end of the channel, and a bottom guide connectable at a location between the first end and the bottom pulley, and preferably between the bottom pulley and fixed pulleys of the end carriage. The bottom guide and top guide are not part of the tensioned parts in the channel and can, therefore, be stored separately from the channel with its tensioned parts-e.g.., springs, pulleys, and pulley cord. Multiple bottom guide and top guide configurations can be mated to the channel with its tensioned parts without interfering with the operation of either. Fixed pulleys and bottom pulley of the end carriage are advantageously connected by an intermediate tensioned connector with all said parts held in tension between and by the connection of the bottom pulley to the tensioned pulley cord and the connection of the bottom pulley to the second end of the channel. The bottom guide ...

INVERTED CONSTANT FORCE WINDOW BALANCE FOR TILT SASH

A window balance may include a shoe body with an elongate portion and an enlarged portion. The elongate portion may include at least one carrier section for supporting a coil spring and an enlarged portion may include a locking element and a cam in communication with the locking element. The width of the enlarged portion may be greater than the width of the elongate portion. The spring may rest in the carrier section and may be secured to a window jamb with a fastener or a mounting element.

WINDOW SASH COUNTERBALANCE WITH VARYING LIFT

TITLE WINDOW SASH COUNTERBALANCE WITH VARYING LIFT A counterbalance for a window sash (28) includes a torsion spring (10), a follower nut (20), and a spiral rod (22) threadably engaged with the follower nut (20). The spiral rod (22) has a pitch that is varied along one part of its length to produce a substantially constant lifting force throughout most of a range of sash travel between a lowered position and an intermediate position. However, the pitch is further varied along another part of the length of the spiral member to produce a larger lifting force within a remaining portion of the range of sash travel from the intermediate position to the raised position.

WINDOW SASH BALANCE

WEIGHT COMPENSATION DEVICE FOR A LIFTING GATE

The invention relates to a weight compensation device (6) for a lifting gate (1), comprising a spring-loaded element (61) and a tractive element (62), which can be wound onto or unwound from a winding unit in such a way that the spring-loaded element (61) achieves its greatest pre-tension when the door leaf (2) is in the closed position and is essentially tension-free when the door leaf (2) is in the open position. According to the invention, the tractive element (62) is narrower at the end facing the winding device than at the end facing the spring-loaded element (61) and the winding device comprises a guide unit (63), which is used to wind the tractive element (62) in such a way that the wound layers lie adjacent to one another without making contact. To achieve this, the guide surfaces around the perimeter of the guide unit (63) have a continuously increasing radius in the winding direction. This enables the provision of a weight compensation device (6) that achieves the torques required ...

Spring balance

This invention relates to a spring balance, and in particular to a spring balance for use with a sliding sash window. The invention provides a spring balance comprising a top assembly which is securable to a frame member, a bottom assembly which is securable to a sliding sash, a tension spring connected to the top assembly and to the bottom assembly, a torsion spring, a spiral rod, and a follower bush interconnecting the spiral rod and the torsion spring. The spring balance is adjustable at the top assembly, and includes a limit mechanism for limiting the range of adjustment, the limit mechanism preventing over-adjustment of the spring balance.

Window sash balance with tension and torsion spring

A spring balance for counteracting the weight of heavy window sashes includes both a torsion spring and a tension spring. The two springs are separated by a rigid tube. One end of each spring is connected to an end of the rigid tube. A spiral member engages a follower carried by the other end of the torsion spring and includes a stop along its length for engaging an anchor carried by the other end of the tension spring. The spiral member can be attached by conventional means to a shoe or other connection to the window sash.

Balancing arrangement for double hung windows

A balancing arrangement for double hung windows is disclosed including a spring arrangement supported by a spring holder installed in a window jamb and a balance shoe installed in a window sash. A leaf spring is supported to engage a detent in the balance shoe installed in the top window sash, whereby displacement of the top sash when closed is prevented to maintain the seal between the bottom and top sashes at the horizontal center of the window when the bottom sash is lowered for closing against the compression force of a weather stripping seal at the horizontal center. The opening of the top sash is unaffected, other than a slightly greater force being required to bypass the leaf spring and detent arrangement.

Garage door and operating mechanism therefor

Jamb liner

A jamb liner for a double hung window wherein a length of the jamb liner is mounted to and overlies each of the jamb sides defining the window opening. Each jamb liner has a front profile corresponding to the side of the associated sash to slidably retain and guide the sash. The jamb liner is extruded from a plastic material that is at least semi-rigid. Coextruded on the rear face of the jamb liner is are a pair of longitudinal spring hinge members each having a first portion contiguous with the jamb liner formed from a resilient material having a spring characteristic, and a second portion extending from the first portion formed from a plastic material that is at least semi-rigid. In mounting the window assembly into the jamb opening, the spring hinge members bendably and springably engage the associated jamb sides to generate a uniform biasing force on the sides of the sashes.

Spring balance

Apparatus and method for cancelling opposing torsional forces in a compound balance

MOUNTING ARRANGEMENT FOR CONSTANT FORCE SPRING BALANCE

A mount for one or more constant force curl springs uses a mounting block secured within a sash shoe channel to support the underside of a lowermost curl spring with a superposed curl spring mounted to counterrotate against an outer convolution of the lowermost spring. Uncoiled free ends of the curl springs pass downward on opposite sides of the mounting block and connect to opposite sides of a sash shoe arranged below the mounting block. This connection is made by laterally sliding the spring ends into slots molded in the sash shoe so that barbs struck and bent from the planes of the free ends of the springs are lodged in widened recesses of the slots to retain the spring ends against upward withdrawal from the spring slots.

BLOCK AND TACKLE SASH BALANCE BRAKE ASSEMBLY

... - 13 - ABSTRACT A block and tackle sash balance assembly for providing a counterbalancing force to a sash window pivotally and slideably mounted within a sash window frame is disclosed. The assembly is adapted to disable the counterbalancing force responsive to pivoting of the sash window.

SPRING BALANCE ASSEMBLY

The present invention provides a balance assembly (10) for use with a sash window assembly ( 104) slidable within a master frame (110). The balance assembly (10) generally includes a plate (20), at least one coil (40), and a shoe or pivot brake assembly (60). The plate (20) is adapted to be attached to the master frame (110). The spring (40) has a coiled portion (42), an intermediate portion (43), and a free portion (44). The coiled portion (42) of the spring (40) is rotatably supported by a support member (30) extending from the plate (20). The free portion (44) of the spring (40) has a curved configuration with a curved end (46). The pivot brake assembly (60) has at least one slot (76) adapted to receive and retain the free portion (44) of the spring (40). The slot (76} defines a protrusion (83) that engages the free portion (44).

WINDOW BALANCE ASSEMBLY

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

WINDOW BALANCE ASSEMBLY

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

WINDOW BALANCE ASSEMBLY

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

WINDOW SASH BALANCE

A spring balance for counteracting the weight of heavy window sashes includes both a torsion spring and a tension spring. The two springs are separated by a rigid tube. One end of each spring is connected to an end of the rigid tube. A spiral member engages a follower carried by the other end of the torsion spring and includes a stop along its length for engaging an anchor carried by the other end of the tension spring. The spiral member can be attached by conventional means to a shoe or other connection to the window sash.

Method of making finned tubing

Locking shoe and mounting bracket for curl spring window balance system

A curl spring sash shoe cassette improves upon the suggestions of U.S. Pat. Nos. 5,353,548 and 5,463,793 by providing a mounting bracket that holds an uncurled length of the curl spring and is securely mounted on top of the shoe cassette to maintain an assembly of the shoe body, the curl spring, and the mount during shipment to a window manufacturer. The mount can receive two mounting screws to resist torque caused by curl springs and sash weight. The shoe is also improved to facilitate removal and reinsertion of sash pins into the tilt lock cams of the shoes and ensure that shoe body halves do not rotate relative to each other when sash tilting splays the body halves apart to lock them in a shoe channel.

Window Balance Assembly

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

Balancing device of raising-lowering window

A balancing force adjusting device for a window which raises and lowers includes a case, a horizontal gear member, a click member and a vertical gear member. The horizontal gear member is rotatably arranged around the horizontal axis in a predetermined position with this case, and a ratchet gear is formed around a shaft portion of the horizontal gear member. The click member is rotatably arranged in a predetermined angular range around the horizontal axis in a position adjacent to the horizontal gear member, and has two clicks extending in the horizontal gear member direction and respectively arranged on both the sides of an intermediate shaft portion. The vertical gear member is engaged with the horizontal gear member. One side click of the click member is biasedly engaged with the ratchet gear formed in the horizontal gear member. When the engagement of this one side click is released by a swinging operation, the other side click is engaged with the ratchet gear so that a torsion spring ...

Counterbalance system for a tilt-in window having an improved shoe assembly and anchor mount

A counterbalance system for a tilt-in window having novel components. The counterbalance system includes brake shoes, curl springs and spring anchor mounts. The brake shoe assembly of the counterbalance system has a unique, low cost locking mechanism that uses a looped wire. The brake shoe assembly may also be configured with external rib projections that reduce the friction of the brake shoe assemblies as they move through the tracks of the window. The spring anchor mount is formed with a recess in its body that enables the tilt latch of a window sash to pass the spring anchor mount within the track of the window frame. As a result, the spring anchor mounts can be placed within the window frame at points previously not available.

Window balance

WINDOW SASH COUNTERBALANCE WITH VARYING LIFT

IMPROVEMENTS IN OR RELATING TO SPRINGS FOR SASH FRAME TENSIONING ARRANGEMENTS

AUTOMATIC FRICTION SASH HOLDER

TITLE AUTOMATIC FRICTION SASH HOLDER A sash holder 10 automatically produces sashholding friction in a resin jamb liner 12 in which the sash 11 runs. Jamb liner 12 has a track 20 in the sash plow region of each sash run 16 and 17, and track 20 is formed within parallel L-shaped edge guides 21. Sash holder 10 includes an upper component 25 connected to a balance spring 13 and a lower component 26 supporting sash 11 in its sash plow region. Overlapping surfaces 39 and 40 of components 25 and 26 form an interferring wedge that operates when the components move vertically to each other in response to spring force pulling upward against the sash weight. The interferring wedge can be arranged in several ways for pressing runners 27 and 28 against track guides 21 to produce sash-holding friction as a function of the vertical extent of the vertical movement of the overlapping surfaces.

OVERHEAD DOOR TORSION SPRING ASSEMBLY AND METHOD

OVERHEAD DOOR TORSION SPRING ASSEMBLY AND METHOD A torsion spring assembly for counterbalancing overhead doors which includes an elongated helical torsion spring with coils that are normally spaced apart (when the spring is untensioned), a shaft extending through the spring, and a pair of spring-mounting collars carried by the shaft and provided with slotted neck portions operatively connected to pre-formed hooks at the ends of the spring. One of the collars is fixed against both rotational and axial movement upon the shaft; the other is rotatably mounted upon the shaft; and at least one of the collars is removable from the shaft for field disassembly and reassembly of the parts. The method for constructing the assembly, either during manufacture or in the field, is also disclosed.

WINDOW BALANCE ASSEMBLY

A window balance assembly may include a carrier, a spring element, and a mounting bracket The spring element may include first and second portions The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

WINDOW BALANCE ASSEMBLY

... ²²A window balance assembly may include a carrier, a spring element, and a ²mounting ²bracket. The spring element may include first and second portions. The first ²portion may ²be coupled to the carrier. The mounting bracket may engage the second portion ²of the ²spring element and may selectively engage the carrier. The mounting bracket ²may ²include a first mounting surface disposed at a non-perpendicular angle ²relative to an ²exterior surface of carrier when the window balance assembly is in an ²uninstalled ²configuration. The first mounting surface may be substantially parallel to the ²exterior ²surface of the carrier when the window balance assembly is in an installed ²configuration ²and the mounting bracket is disengaged from the carrier.² ...

MOUNTING ARRANGEMENT FOR CONSTANT FORCE SPRING BALANCE

A mount for one or more constant force curl springs uses a mounting block secured within a sash shoe channel to support the underside of a lowermost curl spring with a superposed curl spring mounted to counterrotate against an outer convolution of the lowermost spring. Uncoiled free ends of the curl springs pass downward on opposite sides of the mounting block and connect to opposite sides of a sash shoe arranged below the mounting block. This connection is made by laterally sliding the spring ends into slots molded in the sash shoe so that barbs struck and bent from the planes of the free ends of the springs are lodged in widened recesses of the slots to retain the spring ends against upward withdrawal from the spring slots.

APPARATUS AND METHOD FOR CANCELING OPPOSING TORSIONAL FORCES IN A COMPOUND BALANCE

A method and apparatus for reducing the torque of a compound balance in order to substantially cancel out the torsional force of the torsion spring acting on the spiral rod by creating an equal and opposing torsional force on the extension spring. The apparatus is an assembly connector that is non-permanently engaged with the extension spring, with the spiral rod being tensioned by the torsional force of the torsion spring. Alternatively, the extension spring may be turned in a direction to apply more torque than is required for operation of the compound balance. It is then engaged with a non pre-tensioned spiral rod sub-assembly to transfer the excess torque to the torsion spring of the spiral rod sub-assembly. In this manner, the opposing torsional forces of the torsion spring and the extension spring acting on the spiral rod substantially cancel out each other.

LOCKING SHOE AND MOUNTING BRACKET FOR CURL SPRING WINDOW BALANCE SYSTEM

A curl spring sash shoe cassette improves upon the suggestions of U.S. patents 5,353,548 and 5,463,793 by providing a mounting bracket that holds an uncurled length of the curl spring and is securely mounted on top of the shoe cassette to maintain an assembly of the shoe body, the curl spring, and the mount during shipment to a window manufacturer. The mount can receive two mounting screws to resist torque caused by curl springs and sash weight. The shoe is also improved to facilitate removal and reinsertion of sash pins into the tilt lock cams of the shoes and ensure that shoe body halves do not rotate relative to each other when sash tilting splays the body halves apart to lock them in a shoe channel.

SPECIAL QUIET ANCHOR FOR SPRING FITTING IN COUNTERBALANCING DOOR, AND DOOR ASSEMBLY INCLUDING THE SAME

AUTOMATIC FRICTION SASH HOLDER

Extension Spring System for an Overhead Door

COUPLING FOR SPIRAL COUNTERBALANCE

SPRING MOUNTING FOR SASH FRAME TENSIONING ARRANGEMENTS

SPRING MOUNTING FOR SASH FRAME TENSIONING ARRANGEMENTS A mounting element and assembly for a sashframe tensioner used in a sash window frame to support the window in any desired open position, the assembly comprising a channel section member and a sash frame support element slidable in said channel section member. A coiled ribbon spring having a free outer end thereof engaged with said sash frame support member, and a mounting element, the mounting being disposed between the sash frame support member and a coiled body portion of said coiled ribbon spring with a free end of said coiled ribbon spring disposed alongside said mounting, said mounting being secured to said channel section member, directly or indirectly, and in use impinging upon an outer surface of said coiled body portion to retain said coiled body portion in position during uncoiling of said coiled ribbon spring as said sash support member is moved away from said coiled body portion.

SPRINGS FOR SASH FRAME TENSIONING ARRANGEMENTS

BALANCING ARRANGEMENT FOR DOUBLE HUNG WINDOWS

BALANCING ARRANGEMENT FOR DOUBLE HUNG WINDOWS A balancing arrangement for double hung windows is disclosed including a spring arrangement supported by a spring holder installed in a window jamb and a balance shoe installed in a window sash. A leaf spring is supported to engage a detent in the balance shoe installed in the top window sash, whereby displacement of the top sash when closed is prevented to maintain the seal between the bottom and top sashes at the horizontal center of the window when the bottom sash is lowered for closing against the compression force of a weather stripping seal at the horizontal center. The opening of the top sash is unaffected, other than a slightly greater force being required to bypass the leaf spring and detent arrangement.

Sash balancing mechanism

Window Balance Assembly

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. 1. A window balance assembly comprising:a carrier extending along a first longitudinal axis and comprising a housing having an interior space, an upper end and a lower end;a mounting bracket disposed at the upper end of the carrier;a spring comprising a first portion at least partially disposed in the interior space of the carrier and a second portion extending outside of the interior space of the carrier and engaging the mounting bracket;a receiver supported in the carrier near a lower end of the carrier and comprising a cam rotatable about a second axis between a first position and a second position wherein rotation of the cam between the first and second positions operates to increase a dimension of at least a portion of the window balance assembly; 'wherein while the tab is preventing rotation of the mounting bracket about the second axis, the tab does not prohibit relative twisting and sliding movement between the carrier and the mounting bracket to disconnect the mounting bracket and the carrier from one another and allow movement between the carrier and the mounting bracket generally in a direction along the first longitudinal axis.', 'wherein, in an uninstalled configuration of the window balance assembly, a single tab at a lower end of the mounting bracket releasably engages the upper end of the carrier to connect the mounting bracket to the carrier and opposes a force of the spring against the mounting bracket to prevent the mounting bracket from rotating relative to the carrier about a third axis that is generally parallel to the second axis; and'}2. The window balance assembly of claim 1 , wherein in the uninstalled configuration claim 1 , another ...

INVERTED CONSTANT FORCE WINDOW BALANCE FOR TILT SASH

A window balance may include a shoe body with an elongate portion and an enlarged portion. The elongate portion may include at least one carrier section for supporting a coil spring and an enlarged portion may include a locking element and a cam in communication with the locking element. The width of the enlarged portion may be greater than the width of the elongate portion. The spring may rest in the carrier section and may be secured to a window jamb with a fastener or a mounting element. 121.-. (canceled)22. An inverted constant force window balance comprising:at least one coil spring having a free end configured to secure to a mounting bracket for coupling to a window jamb channel or to secure directly to the window jamb channel; an elongate portion having two side walls extending between the front surface and the rear surface and defining an elongate portion width, wherein the elongate portion includes an upper portion and an opposite lower portion that define a longitudinal direction that is orthogonal to the transverse direction;', 'at least one carrier section proximate the upper portion of the elongate portion for carrying the at least one coil spring on the elongate portion, wherein the at least one carrier section is defined at least partially by an upper surface and a lower surface, the upper surface and the lower surface both extending from the elongate portion in the transverse direction; and', 'an enlarged portion disposed at the lower portion of the elongate portion, wherein the enlarged portion is formed by two opposing projections extending beyond the two side walls of the elongate portion, the two opposing projections each include a projection side wall that define an enlarged portion width, and wherein the enlarged portion width is greater than the elongate portion width; and, 'a shoe body having a front surface and an opposite rear surface that define a transverse direction, the shoe body comprisinga cam disposed within the enlarged portion of ...

SNAP LOCK BALANCE SHOE AND SYSTEM FOR A PIVOTABLE WINDOW

Disclosed are apparatus for a snap lock balance shoe and system to be incorporated in pivotable double hung windows. In one embodiment, the snap lock balance shoe includes a pair of retractable tabs that partially extend through openings within an inverted window balance. 122-. (canceled)23. A balance shoe for an inverted window balance , the balance shoe comprising:a rotatable cam configured to receive at least a portion of a pivot bar;a locking member comprising a plate configured to engage the rotatable cam and releasably engage a back wall of a jamb track; a first end;', 'a second end opposite the first end;', 'a front surface;', 'a back surface opposite the front surface; and', 'at least two opposing edge surfaces extending between the front surface and the back surface, wherein the first end is enlarged relative to the second end and the frame is substantially T-shaped with the at least two opposing edge surfaces of the second end being extended relative to the first end;, 'a frame comprisinga connection pocket defined in the second end and configured to removably receive a fastener connected to the inverted window balance; andat least one connecting device defined in the second end and configured to engage a channel of the inverted window balance,wherein the enlarged first end defines a cam opening extending from the front surface to the back surface and configured to receive the rotatable cam, and the back surface defines a locking member recess surrounding the cam opening and configured to receive the plate, and wherein the plate covers the cam opening and substantially spans an entire back surface of the enlarged first end.24. The balance shoe of claim 23 , wherein the plate covers the rotatable cam when the rotatable cam is disposed in the cam opening.25. The balance shoe of claim 23 , wherein the rotatable cam comprises a substantially cylindrical body configured to be received in the cam opening.26. The balance shoe of claim 25 , wherein the body ...

Window Balance Assembly

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. 1. A window balance assembly comprising:a carrier having an upper end and a lower end;a curl spring at least partially disposed in the carrier;a mounting bracket disposed at the upper end of the carrier; anda receiver supported for rotation relative to the carrier;wherein the carrier comprises a first housing portion and a second housing portion coupled to one another, at least one of the first housing portion and second housing portion including a recess intermediate the upper end and the lower end;wherein the receiver comprises a cam that is rotatable between a first position and a second position, and wherein rotation of the cam between the first and second positions changes an overall dimension of the window balance assembly;wherein the curl spring comprises a curled portion and an uncurled extension portion, wherein the curled portion of the curl spring is received in the recess and wherein the uncurled extension portion of the curl spring extends from a side of the carrier and engages the mounting bracket;wherein the mounting bracket comprises a tab releasably engaging the carrier; the mounting bracket is releasably engaging the upper end of the carrier,', 'a downward force of the curl spring on the mounting bracket retains the mounting bracket on the carrier, and', 'the tab of the mounting bracket hooks the carrier to prevent the downward force of the curl spring from rotating the mounting bracket relative to the carrier; and, 'wherein in an uninstalled configurationwherein while the tab is preventing rotation of the mounting bracket, the tab allows relative linear movement between the carrier and the mounting bracket in a first direction to separate the ...

Locking balance shoe and system for a pivotable window

Locking balance shoes and balance systems to be incorporated in pivotable double hung windows include, in one embodiment, a pair of retractable tabs that partially extend through openings within an inverted window balance. In one embodiment of the method of installing such a system, an enlarged portion of the balance shoe is inserted into a window jamb and then rotated into position.

Window balance assembly

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.