Movable or removable closures – With means mounting closure for reciprocation
Patent
1994-11-17
1996-12-03
Redman, Jerry
Movable or removable closures
With means mounting closure for reciprocation
16 81, E05D 1506
Patent
active
055796079
ABSTRACT:
A housing having a first cross-sectional shape includes an elongate passageway disposed between a sealed bottom end of the housing and a top opening thereof. Liquid is disposed in the elongate passageway. A pulley is mounted substantially above the top opening. A weight adapted to fit in the housing has a second cross-sectional shape that differs substantially from the first cross-sectional shape. A cable having a first end and a second end is entrained on the pulley, and a valve member is movably mounted with respect to the weight for directionally regulating a damping force associated with the movement of the weight through the liquid. The cable is attached to the weight at the first end of the cable. One of the housing and the second end of the cable is attached at a fixed location with respect to the door and the other of the housing and the second end of the cable is attached to the door. The weight moves upwardly through the liquid in the elongate opening with a first damping force in response to an opening movement of the door and the weight moves downwardly through the liquid in the elongate opening with a second damping force when the door is released thereby controlling the automatic closing of the door. Two molded plastic parts from a plug for the top end of the passageway and include cylindrical mounting surfaces for the pulley.
REFERENCES:
patent: 3334444 (1967-08-01), Hargrove
patent: 4003102 (1977-01-01), Hawks et al.
patent: 4126912 (1978-11-01), Johnson
patent: 4649598 (1987-03-01), Kinsey et al.
patent: 4665584 (1987-05-01), Williams
patent: 4884369 (1989-12-01), Tathham
patent: 4891911 (1990-01-01), Yung
patent: 5285596 (1994-02-01), Kinsey
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