Alarm sensor apparatus for closures

Details Alarm sensor apparatus for closures Alarm sensor apparatus for closures

1984-01-31

1986-06-10

Lyddane, William E.

Movable or removable closures

Closure condition signal or indicator

340547, 340693, G08B 1308

Patent

active

045934916

ABSTRACT:
An alarm sensor apparatus for closures such as doors and windows, and particularly for closures having loose tolerances such as overhead doors, garage doors or the like, the sensor apparatus comprising a pair of cooperating bracket members, one being attached to the door facing or frame work and the other to the door member, two magnetic sensor elements carried by said bracket members, the bracket members comprising a pair of cooperating orthogonal guide slots and plates and a stop member engageable with one of the sensors for aligning the sensors with respect to each other in all three orthogonal planes when the door is closed.

REFERENCES:
patent: 800216 (1905-09-01), Kales
patent: 1211448 (1917-01-01), Hubbs
patent: 1237993 (1917-08-01), Bahde
patent: 1994940 (1935-03-01), Butters
patent: 2756990 (1956-07-01), Reamey
patent: 3771153 (1973-11-01), Byrne
patent: 3975723 (1976-08-01), Bowling et al.
patent: 4062314 (1977-12-01), Allen et al.
patent: 4232309 (1980-11-01), Dillitzer
patent: 4271338 (1981-06-01), Rakocy
patent: 4462023 (1984-07-01), Nielsen et al.

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