Door position indicator

Details Door position indicator Door position indicator

1989-03-08

1990-05-01

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

H01H 316, G08B 1308

Patent

active

049220640

ABSTRACT:
A door position indicator for indicating when the door is open or ajar from the doorjamb comprises a proximity switch which is adjustably mounted on the frame leaf attached to the doorjamb. An actuator is adjustably mounted on the door leaf attached to the door and positioned thereon for alignment with the proximity switch when the door is closed. The indicator also comprises a spring which urges the actuator toward the proximity switch when the actuator and switch are aligned.

REFERENCES:
patent: Re30716 (1981-08-01), Suska
patent: 3659063 (1972-04-01), Peterson
patent: 3806852 (1974-04-01), Suska
patent: 3838234 (1974-09-01), Peterson
patent: 3896404 (1975-07-01), Peterson
patent: 4049934 (1977-09-01), Newlon
patent: 4066857 (1978-01-01), Suska
patent: 4168409 (1979-09-01), McNinch
patent: 4359719 (1982-11-01), Schwarzer
patent: 4438430 (1984-03-01), Young et al.
patent: 4721946 (1988-01-01), Zunkel

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