Structure for an infrared photoelectric device

Details Structure for an infrared photoelectric device Structure for an infrared photoelectric device

1997-06-06

1998-07-14

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250347, 250353, 250504R, G01J 504, G01J 508, G08B 1302

Patent

active

057808546

ABSTRACT:
A structure for an infrared photoelectric device including a casing covered by a face panel, a circuit board with an infrared photoelectric element, a lens disposed above the circuit board, an adjusting frame assembly mounted inside the casing to hold the circuit board and the lens, and a switch mounted in a top recess on the casing and connected to an alarm system. The adjusting frame assembly is connected to the inside of the casing by a ball and socket joint. The adjusting frame assembly is then fixedly secured at the desired angle by a locating plate. The switch is switched on to turn on the alarm system when the power supply is cut off from the circuit board or the outer cover of the junction box in which the device is installed is opened by a burglar or intruder.

REFERENCES:
patent: 3653021 (1972-03-01), Litman et al.
patent: 4650989 (1987-03-01), Frigon
patent: 4757204 (1988-07-01), Baldwin et al.
patent: 4942385 (1990-07-01), Kobayashi et al.
patent: 4967069 (1990-10-01), Yamakawa
patent: 5138150 (1992-08-01), Duncan

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