Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent
1993-01-15
1993-11-30
Sipos, John
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
Liquid
16 62, E05F 304, E05F 314
Patent
active
052653064
ABSTRACT:
An automatic door closing device comprises a base and an oil guiding loop. The base is provided in the direction of a longitudinal axis thereof with a canal and is further provided in the direction of a short axis thereof with a through hole. A sliding block and a spring are received slidably in an outer end portion of the canal. The oil guiding loop comprises a shaft tube having an inner end dimensioned to fit into the canal of the base and having an outer end provided thereon with a threaded portion and tension scale markings, a washer provided with a through hole and fitted into the outer end of the shaft tube, a sustaining rod having an outer end dimensioned to fit into the through hole of the washer and having an inner end provided thereon with an arresting flange dimensioned to fit into the outer end of the shaft tube, a rotating sleeve having an inner wall provided thereon with threads and having an inner diameter so dimensioned as to fit slidably over the threaded portion of the shaft tube, and a cap dimensioned to fit into the outer end of the shaft tube.
REFERENCES:
patent: 2538135 (1952-02-01), Woodruff
patent: 3675270 (1972-07-01), Jentsch
patent: 3934307 (1976-01-01), Lasier et al.
patent: 4590639 (1986-05-01), Fritsche et al.
patent: 4686739 (1987-08-01), Fritsche et al.
Cuda Carmine
Sipos John
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