Indicator device

Details Indicator device Indicator device

1992-12-07

1993-08-17

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Magnetically actuated

G01D 512

Patent

active

052359336

ABSTRACT:
There is described an improved device for indicating the status of a room or adjoining space, the device including first and second plates hingedly connected to one another along adjacent edges thereof, a spring urging the second plate into a normally closed position overlying and parallel to the first plate to the surface of a door. A magnet or equivalent devices are used to temporarily connect the second plate to a second surface, such as a door frame, adjacent to and extending at an angle to the surface of the door, wherein relative movement of the door away from the second surface breaks the connection between the second plate and the second surface, whereupon the second plate automatically returns to its normally closed position.

REFERENCES:
patent: 823782 (1904-03-01), Holden
patent: 2002725 (1935-05-01), Wyatt et al.
patent: 2730298 (1956-01-01), Haserodt
patent: 3343784 (1967-09-01), Waldhaus et al.
patent: 3516036 (1969-01-01), Lea
patent: 3698352 (1972-10-01), Forman
patent: 3915112 (1975-10-01), Forester
patent: 4040381 (1977-08-01), Keogh, Sr. et al.
patent: 4316575 (1982-02-01), Van Darwarka
patent: 4401050 (1977-08-01), Britt et al.
patent: 4567846 (1986-02-01), Kurtz
patent: 4702411 (1987-10-01), Yager
patent: 4840307 (1989-06-01), Hartman
patent: 4899683 (1990-02-01), Cuffaro
patent: 4976214 (1990-12-01), Lee et al.

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