Door alarm
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United States of America Patent
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May 1, 2018
Issued Date -
N/A
app pub date -
Apr 14, 2015
filing date -
Apr 16, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An alarm for a door is operable to generate an alarm signal when a rotary grip member of the door is rotated to a particular position, such as an unlocked position. The alarm comprises a housing having a strap retainer configured to receive and retain a strap to hold the housing to the rotary grip member. The alarm comprises a tilt switch for switching when the housing is tilted. Control circuitry is interconnected to the tilt switch and to an annunciator and is operable to activate the annunciator dependent on a state of the tilt switch.
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