PROTECTIVE CAP FOR DRUCKGASBEHÄLTER

The invention concerns a protective cap for Druckgasbehälter, which is composed of two at a dividing line connected with one another, an internal cavity for the admission of a Entnahmeventils enclosing partial bowls, and the one attachment section for fastening to a Druckgasbehälter or to the Entnahmeventil, a head section and between the attachment section and the head section extending side parts exhibits itself.

The most sensitive part of Druckgasbehältern, under what in the following in particular compressed gas bottles, gas cartouches or pressure capsules are to be understood, is the Entnahmeventil, which serves for the Gasentnahme and for filling the Druckgasbehälters. By the term “Entnahmeventil” is understood if necessary here the Flaschenventil including all armatures, as for example pressure-reducing valve, integrated therein, Dosierund of needle valves, or the like. In order to protect the Entnahmeventil against damages with falls or due to inappropriate handling, protection facilities are used in the form of protection hoods or - caps. The attachment of this safety device effected thereby either at the compressed gas bottle, in particular at an already existing thread, or at an appropriate attachment section of the Entnahmeventils and can be fastened in this case also together with the Entnahmeventil to the compressed gas bottle and removed from it. For such protection device besides, particularly in the medical range of application, a responding exterior and an easy and safe management are wished.

Thus for example the EP describes 0,629,812 A1 a plastic cap for gas bottles with a lower part to fastening to the gas bottle and a top for the protection of the valve, whereby the lower part covers a lateral projection/lead with a curvature as supporting device. This well-known protection device has however the disadvantage that they cannot be attached at the compressed gas bottle, without removing the Entnahmeventil before from the Druckgasbehälter.

A protection device, which can be attached and removed without large expenditure at the Druckgasbehälter, without in addition the Entnahmeventil must be removed, is from the EP 0,939,875 A1 well-known. There a protective cap for compressed gas bottles is described, which consists of two connected partial bowls, which are connected by screw connection for example. The partial bowls enclose an internal cavity for the admission of the Entnahmeventils and exhibit at least a lateral recess and a recess on the side of the head. The recesses are so dimensioned that also with put on protective cap the operation of all functions of the Entnahmeventils as well as the attachment are unproblematically ensured by connections. The protective cap is fastened by means of Schraubgewinde to the compressed gas bottle. Their structure from two partial bowls makes it possible to install the protective cap at the compressed gas bottle also with Entnahmeventil already installed and/or to it befestigeten connections. The protective cap can be adapted to Druckgasbehälter of different size and kind, for example to compressed gas bottles with 2, 5, 10 or 20 litres of volume. This before-well-known protective cap worked satisfactorily, is however capable of improvement regarding manufacturing costs and mechanical firmness still.

Task of the available invention is to develop a protective cap for Druckgasbehälter which overcomes the disadvantages of the state of the art.

This task is solved by the fact with a protective cap of the kind initially specified that in the side parts several reinforcement props extending between attachment section and head section are intended, whereby lengthwise by two opposite lying reinforcement props the dividing line of the two partial bowls runs each other.

With the reinforcement props it acts over by shaping, Verdickung, reinforcing or in other way fastened sections of the protective cap, whose task is in particular the improvement of the mechanical firmness and thus the protective function of the protective cap. Thus that the dividing line runs each other lengthwise by two opposite lying reinforcement props, thus the partial bowls in the installation condition at the reinforcement props are connected, exist between the partial bowls a large contact area, which improves the mechanical rigidity of the protective cap altogether substantially.

A favourable further training of the invention plans that the reinforcement props arranged at the dividing line are composed of two, in each case a partial bowl assigned medium-high l-sections with essentially Uoder V-shaped cross section in each case, their thigh edges is each other turned. The two medium-high l-sections join themselves thus in the installation condition to a hollow section with large mechanical firmness, however small weight.

Preferably are the reinforcement props trained to the head section tapering. Such an arrangement facilitates the storekeeping, in particular the stacking of the protective caps.

In order to ensure the operation if possible all functions of the Entnahmeventils also with put on protective cap problem-free, the side parts of the partial bowls are equipped with at least one recess preferentially in each case. A recess on the side of the head of the head section serves the same purpose. Further the recesses lead to a reduced total weight and to the saving of material with the production of the protective caps. The protective cap contains prefers two lateral recesses, which are oppositely arranged preferentially by same or similar size and. Instead of two lateral recesses the protective cap can exhibit also four lateral recesses, which are favourably symmetrically to each other arranged. The size of the recess in the head area at the top side of the protective cap is preferentially in such a way laid out that the handwheel of a Entnahmeventils can be operated also with put on protective cap. If necessary parts of the Entnahmeventils from the recesses in the side parts and/or in the head area can exceed.

For the improvement of the firmness against impacts the head section is equipped with at least one circularly around the head section rotating ridge appropriately.

Means intended for fastening a supporting device and/or a handling cradle are appropriately at least a partial bowl. As such means come for example a recess, into which a hook or a pin can reach, threaded bores, bars or burls into consideration. The handling cradle consists for example of one or more grasps. The grasp can be a retainer, a Griffstange, a grasp plate or a grip recess. The grasp is integrated preferably into the protective cap and is preferentially mobile, in particular more klappoder tiltable, arranged. The grasp can be out-folded for example by a hinge in the head area from bottom to top. The grasp can be trained also in the head area as laterally swing outable part. The grasp can be also as adjustable part trained, e.g. as withdrawable grasp toward the protective cap longitudinal axis or perpendicularly to it. The mobile handling cradle is favourably lockable trained. The supporting device can be for example a hook or a hakenförmiges part. The supporting device is preferentially mobile. in particular hinged. The supporting device can be similarly to the handling cradle developed, it can be also lockable.

Preferentially the partial bowls made of plastic or made of metal are manufactured. The protective cap, or a part of the protective cap, consists thereby preferably of a thermoplastic plastic, e.g. Polyoxymethylen, polyethylene, polypropylene, polystyrene, PVC, polyester, PP, liquidcrystalline polymer (LCP). The thermoplastic plastic can also dazzles its. The thermoplastic plastics are fiber-reinforced favourably (e.g. Glass fiber, mineral fibre, carbon fiber). A suitable plastic is e.g. PP with 30 weight percentage glass fiber. The plastic can be foamed. The cap or parts of the cap can be manufactured preferentially by usual thermal plastics processing technologies such as extruding or injection moulding.

A likewise favourable execution form of the invention plans that the partial bowls are symmetrically to each other developed. In particular with the production of the two partial bowls from injection moulding it is possible to manufacture these in a common injection mold whereby during the production substantial costs are saved.

The attachment section is preferentially equipped with fastening parts, which the attachment at a Entnahmeventil - if the Entnahmeventil a suitable attachment section exhibits - or at the receiver serve. The fastening parts cover for example a thread, a bayonet fixing, clamping catch or spring-actuated lock, or they are formed by out-standing training such as grooves or teeth, which in an appropriate thread or appropriate elements at the attachment section of the Entnahmeventils intervene or in the external thread at the bottle neck of a compressed gas bottle. If necessary an additional adaptor piece, which is put on on the bottle thread, can become necessary. Also with an attachment of the protective cap with a thread-like attachment mechanism a adaptor piece can be favourable to the compressed gas bottle, e.g. with the attachment of the protective cap to a compressed gas bottle with smaller bottle thread. The attachment mechanism can contain also a band or a belt. The band is led for example around the ground of the compressed gas bottle and fastened to the protective cap solvable. As attachment mechanism can be also eyes, volumes or latches at the protective cap, whereby at the Entnahmeventil and/or at the Druckgasbehälter corresponding counterparts are arranged for attachment. A further example of an attachment mechanism is a fork, which is installed at the protective cap and seizes at the Entnahmeventil.

Preferentially the partial bowls are at least in the range of the head section and the attachment section firmly, however solvable, for example by a bolt connection, with one another connected.

In resuming arrangements the cap is equipped with Verdrehund/or with a roll protection. The anti-twist plate of the protective cap serves the protective cap on the compressed gas bottle for the adjustment, so that the protective cap cannot be rotated inversely to the compressed gas bottle. The anti-twist plate is for example a rectangular recess frequent inside the protective cap for the admission one at the Entnahmeventil of existing square. The roll protection is one or more formations at the protective cap, which project over the gas bottle and prevents a rolling of the lying bottle. The roll protection is favourably in the attachment section of the protective cap, i.e. at that the compressed gas bottle appropriate at the next convenient part of the protective cap. For example it concerns during the roll protection angular bulge, one or more projections/leads, bars or tap, a altogether angular surface area or an angular profile within the base range, which extend beyond the outer circumference of the Druckgasbehälters.

On the basis the design a remark example of the invention is to be described more near. To schematic announcements point:

Fig. 1

a protective cap according to invention in a plan view;

Fig. 2

the protective cap from Fig. 1 in the cross section along the cut line II-II in Fig. 1

Fig. 3

the protective cap from Fig. 1 in a side view of the perspective III in Fig.1

The protective cap 1 for Druckgasbehälter, shown in the designs, is composed of symmetrically to each other arranged partial bowls 2, 3, which are connected at a dividing line 4. Both partial bowls 2.3 are manufactured made of injection moulding. That accurately resembles structure of both partial bowls makes possible it to use the same injection mold for both partial bowls 2.3. The partial bowls 2.3 enclose an internal cavity 5, which is intended for the admission here of a Entnahmeventils not shown. In the compound condition the protective cap 1 points an attachment section 6 for fastening to here a Druckgasbehälter not shown or to one on this installed Entnahmeventil. For this purpose the attachment section 6 is equipped with appropriate fastening parts, for example a Schraubgewinde 7, which can cooperate with an appropriate Schraubgewinde at the Druckgasbehälter or at the Entnahmeventil. The surface area of the attachment section 6 exceeds in the installation condition over the Druckgasbehälter and is octagonally designed as roll protection in the remark example, it can however also approximately, elliptically, square or much angular be.

On that the attachment section 6 against set side of the protective cap 1 a circular head section 9 is arranged. The attachment section 6 and the head section 9 are connected by side parts 11. The side parts 11 exhibit recesses 12, by which the operation of the Entnahmeventils is possible with put on protective cap also. The protective cap 1 can exhibit the moreover one in way not shown at the attachment section 6 or at the head section 9 than additional Stoßsicherung completely current bulges or ribs here. The partial bowls 2.3 point 6 and in the head section 9 within the range of the dividing line 4 drillings 8 up, at those in the attachment section the partial bowls 2.3, for example by means of bolt connections or combined screwing/plug connectors, firmly, however to be solvable interconnected. For the assembly of the protective cap 1 the partial bowls 2.3 are from both sides advanced and fastened with one another; a Entnahmeventil or to it already installed connections already installed does not need to be removed usually before. Further drillings 10 serve the attachment of a handle or a stretcher mechanism.

The partial bowls 2.3 are also in the side parts 11 integrated reinforcement props 14a, 14b, 15a, 15b, 16a, 16b equipped, by which the mechanical firmness of the protective cap is increased. In the remark example each of the partial bowls points three reinforcement props to (partial bowl 2: Reinforcement props 14a, 15a, 16a; Partial bowl 3: Reinforcement prop 14b, 15b, 16b). As medium-high l-sections the 14a, 14b, 15a, 15b, 16a, 16b trained division vines exhibits an essentially triangular cross section and tapers themselves in the direction of the head section 9 of the protective cap 1st substantial for the invention is now that the thigh edge surfaces 18, 19 of the reinforcement props 15a, 16a and/or 15b, 16b run accurately at the dividing line 4 of the two partial bowls, so that in the installed condition of the protective cap 1 the reinforcement props 15a, 15b as well as 16a, 16b are one on the other-pressed in each case with their thigh edge surfaces 18, 19 and a common reinforcement prop to form in this way in each case. Thus a large contact area exists between the partial bowls 2.3, whereby the protective cap 1 receives a particularly high mechanical rigidity.

In principle the protective cap should be in sections rotationally symmetrically developed at least and have a diameter, which differs not substantially from the diameter of the gas tank (thus for example a compressed gas bottle, a pressure capsule or a gas cartouche). For example the diameter of the protective cap lies above it within the range of container diameter or up to 10 per cent. Is favorable, if the protective cap locks concisely with the gas tank and exceeds only for roll protection completely or in parts laterally over these. The size of the protective cap can vary; the minimum size of the protective cap 1 results usually from it that within the cavity 5 the Entnahmeventil planned for respective application can be taken up totally or partly, if necessary including integrated armatures such as pressure-reducing valves, metering valve and such, however the protective cap can be intended also only for covering a part of the Entnahmeventils. The protective cap 1 is for Druckgasbehälter, in particular compressed gas bottles, gas cartouches or pressure capsules of different size, for example with 2, 5, 10, 20 or 50 litres of volume suitable.

(1)

Protective cap

(2)

Partial bowl

(3)

Partial bowl

(4)

Dividing line

(5)

Cavity

(6)

Attachment section

(7)

Schraubgewinde

(8)

Drilling

(9)

Head section

(10)

Drilling

(11)

Side part

(12)

Recess

(13)

-

(14) A, b

Reinforcement prop

(15) A, b

Reinforcement prop

(16) A, b

Reinforcement-die

(17)

-

(18)

Donation edge surface

(19)

Thigh edge surface