Detection system

Details Detection system Detection system

1974-08-05

1976-06-01

Pitts, Harold I.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340229, G08B 1704

Patent

active

039613283

ABSTRACT:
An alarm system comprising an elongate and flexible pressure line adapted to be charged with a selected line pressure; switching means coupled to the line and responsive to a pressure change in the line to create alarm signal; union means inserted in frictional sealing engagement within said line and having a bore which maintains the fluid continuity of the line; and spring-biased retaining means circumscribing said line and applying a selected clamping force to seal said union means in said line. The union means are arranged to break the seal of the line in response to an emergency condition, to thereby lower the line pressure and activate an alarm.

REFERENCES:
patent: 3772671 (1973-11-01), Owen
patent: 3851321 (1974-11-01), Stitt

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