Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers
Patent
1988-09-07
1989-11-07
Seidel, Richard K.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
16DIG17, 292262, E05C 1704, E05F 300
Patent
active
048782653
ABSTRACT:
A releasable door hold-open mechanism, for use with a door closer, is disclosed. The mechanism employs a latch assembly, mounted in a track which defines a predetermined path for a slider shoe associated with a door closer arm. The latch assembly employs a pair of reciprocable rollers, associated with a solenoid activated clevis. When the solenoid is actuated, the clevis maintains the rollers in a latching position, in which they can capture and hold a wedge associated with the slider shoe. Deactivation of the solenoid permits release of the wedge, and the force of the solenoid can also be overcome manually to release the wedge. The latch assembly is selectively positionable in a broad range of positions within the track, to determine the angular position of the door at which holding occurs.
REFERENCES:
patent: 3415562 (1968-12-01), Petersen
patent: 3764172 (1973-10-01), Standke
patent: 3771823 (1973-11-01), Schnarr
patent: 3964125 (1976-06-01), Tansley
patent: 4040143 (1977-08-01), Lasier et al.
patent: 4286412 (1981-09-01), Stevens
patent: 4506407 (1985-03-01), Downey
patent: 4598494 (1986-07-01), Tsuji et al.
patent: 4663800 (1987-05-01), Mettenleiter
Andes William S.
Dorma Door Controls Inc.
Podwil Robert C.
Seidel Richard K.
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