Door closure delay device

Details Door closure delay device Door closure delay device

1990-12-03

1992-01-28

Spruill, Robert L.

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

Checks and closers

Pneumatic

16 70, E05F 302

Patent

active

050833421

ABSTRACT:
A door closure delay device is provided for connection to a door and a frame, whereby the user may delay the closing of the door by actuating a pneumatic timer which is coupled to a pneumatic or hydraulic door closer. The door closer includes a housing, a shaft extending outwardly from the interior of the housing, and a piston or other means for pressurizing the fluid within the housing. The timer includes a control mechanism for setting the amount of time desired to keep the door open, and a timing valve which is normally open but closes when the timer is actuated. When the door is opened and the pneumatic or hydraulic timer actuated, the door remains open for the selected period of time during which the timing valve prevents fluid pressurized within the housing from escaping, and upon the expiration of the selected time period, the timing valve opens and allows the door to close. The device hereof may be provided as either a complete door closer unit or as an addition to an existing pneumatic or hydraulic door closer assembly.

REFERENCES:
patent: 4339843 (1982-07-01), Burnett, Jr.
patent: 4639969 (1987-02-01), Obenshain

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