skip to main content

Title: Alarm sensor apparatus for closures

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 framework 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.
Publication Date:
OSTI Identifier:
DOE Contract Number:
Resource Type:
Country of Publication:
United States
42 ENGINEERING; ALARM SYSTEMS; DESIGN; DOORS; OPENINGS 420202* -- Engineering-- Protective Structures & Equipment