Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Thermally released check or closer
Patent
1985-10-15
1987-04-14
Silverberg, Fred
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Thermally released check or closer
16 49, 16 85, 16DIG10, 16DIG17, E05F 1520
Patent
active
046566902
ABSTRACT:
In an apparatus for closing a fireproof door, a holding device comprises a latch mechanism and a slider. The latch mechanism comprises an actuator member swingably supported in a housing which is provided with a tubular portion wherein a stopper is inserted and downwardly biased by a spring, the biasing force of the spring being adjustable by a screw which is threaded into the tubular portion. The slider is provided with an inclined surface at the front end thereof and a through-hole to receive the stopper therein. The slider is slid into the spacing formed between the actuator member and the housing with upwardly guiding the stopper by the inclined surface of the slider and the slider is locked by the stopper when it falls into the through-hole of the slider. The slider is released from the latch mechanism by swinging the actuator member or upwardly pushing the stopper against the biasing force of the spring.
REFERENCES:
patent: 1816391 (1931-07-01), Moore
patent: 4083080 (1978-04-01), Miyazawa
Anzai Hisatugu
Atsumi Haruyuki
Kasahara Noboru
Katagiri Fujio
Hochiki Corporation
Ryobi Limited
Silverberg Fred
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