Door closer
Номер патента: CA1190253A
Опубликовано: 09-07-1985
Автор(ы): George S. Nimee, Richard L. Zunkel
Принадлежит: Schlage Lock Co LLC
Опубликовано: 09-07-1985
Автор(ы): George S. Nimee, Richard L. Zunkel
Принадлежит: Schlage Lock Co LLC
Реферат: ABSTRACT A door closer for regulating the movement of a door panel with respect to its frame has a body enclosing a chamber and an adjacent cylinder having a head. A piston is reciprocable in the cylinder toward and away from the head and in accordance with the door panel motion. A spring in the chamber urges the piston toward the head. A duct through the piston controlled by a check valve permits liquid flow from the chamber to the cylinder, but not vice versa. A passage in the body extends between the cylinder, near the head, and the chamber. In that passage near the head is a throttle valve for restricting liquid flow, and in the passage near the chamber is a by-pass valve for restricting liquid flow and for permitting increased flow under increased liquid pressure. There is also a bore in the body extending between the passage intermediate the throttle valve and the bypass valve and an adjacent part of the cylinder traversed by the piston.
Door closer
Номер патента: US09714534B1. Автор: Danny Dean Degott,Siho Sung. Владелец: International Door Closers Inc. Дата публикации: 2017-07-25.