Door check device

Details Door check device Door check device

1978-07-26

1980-03-25

Byers, Jr., Nile C.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Checks and closers

Liquid

16 66, 16 84, 16DIG7, 292278, 292306, 292DIG4, E05F 310, E05F 322

Patent

active

041942647

ABSTRACT:
A releasable latch, for attachment to a door check unit having a cylinder and a piston, and serving releasably to secure a door in an open position. A lever is freely slidable along the rod of the piston and is tiltable on the rod for releasable locking engagement. A cam and follower are actuable from a pre-set position to tilt the lever into locking engagement when the door is opened beyond a predetermined limit and then released. On release of the lever from locking engagement with the piston rod the cam and follower are returned to their pre-set position.

REFERENCES:
patent: 984594 (1911-02-01), O'Rourke
patent: 2051969 (1936-08-01), Shastock
patent: 2923026 (1960-02-01), Nack
patent: 3105264 (1963-10-01), Truhon
patent: 3161909 (1964-12-01), Strauss
patent: 3162889 (1964-12-01), Runnels
patent: 3561036 (1971-02-01), Crane
patent: 3909877 (1975-10-01), Christy et al.

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