Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Pneumatic
Patent
1980-11-20
1983-05-10
Bell, Paul A.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
Pneumatic
16 72, 16 84, E05F 310
Patent
active
043823114
ABSTRACT:
A pneumatic door-closure apparatus comprising an elongated cylindrical housing in which an integrally formed rod and piston are slidably biased, the rod having a free end that extends outwardly therefrom and including a plurality of transversely disposed grooves to receive an adjustable-retainer clamp, so as to regulate the inward longitudinal movement of the piston. The rear closed end of the housing is provided with an air-valve regulator to control the speed of the inward movement of the piston, the piston including an air-flow control to allow air to pass freely from the spring-biased side of the piston to the compressed-air side, when the rod is extended outwardly from the housing. A two-way-mounting bracket is further provided and arranged to be attached at the rear closed end of the cylindrical housing for right or left hand mounting of the apparatus.
REFERENCES:
patent: 3090988 (1963-05-01), Truhon
patent: 3284841 (1966-11-01), Patriquin
patent: 3781943 (1974-01-01), Cain
Bell Paul A.
Lojacono Francis X.
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