Movable or removable closures – With means mounting closure for swinging – Transverse pivot; e.g. – single pivoted corner
Patent
1988-10-07
1989-12-19
Dorner, Kenneth J.
Movable or removable closures
With means mounting closure for swinging
Transverse pivot; e.g., single pivoted corner
49386, 49340, E05D 700
Patent
active
048873934
ABSTRACT:
A counterbalancing assembly for use with a gate vertically rotatable about an axle carried by a support structure. The counterbalancing assembly utilizes a coil spring having one end attached to the support structure and having its other end attached to one end of a cable. The other end of the cable is attached to the gate at a point spaced apart from the axle. This cable, intermediate its ends, is trained around a pulley. The pulley is positioned so that as the gate is lifted, the spring provides a resilient force assisting in the opening of the gate and, as the center of gravity of the gate crosses over the axle and the gate starts to fall on the other side of the axle, the spring provides a force counteracting this falling movement. With this arrangement, the coil spring also assists in closing the gate from the open position.
REFERENCES:
patent: 2791796 (1957-05-01), Haas
patent: 3839826 (1974-10-01), Ries
patent: 4470221 (1984-09-01), Courtis
patent: 4481737 (1984-11-01), Rebhan
Anderson Gerald A.
Conover Richard C.
Dorner Kenneth J.
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