Door position indicator for a door closer

Details Door position indicator for a door closer Door position indicator for a door closer

1988-02-29

1989-06-06

Kannan, Philip C.

Movable or removable closures

Closure condition signal or indicator

Indicator at remote station

49336, 16 52, 16 58, G08B 1308

Patent

active

048359050

ABSTRACT:
A door position indicator for a door closer which senses the position of a door closer piston as a means of sensing door position. The door closer and hence the door position indicator may be recessed in the door jamb over the top edge of the door thereby providing additional security to the door position sensing device.

REFERENCES:
patent: 3973357 (1976-08-01), Kluempers
patent: 4208755 (1980-06-01), Shepherd
patent: 4222147 (1980-09-01), Burnett, Jr.
patent: 4285094 (1981-08-01), Levings, Jr.
patent: 4334388 (1982-06-01), Kambic
patent: 4721946 (1988-01-01), Zunkel

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