Pressure actuated sensor switch with bobbin, trip cord and break

Details Pressure actuated sensor switch with bobbin, trip cord and break Pressure actuated sensor switch with bobbin, trip cord and break

1976-01-16

1977-09-06

Scott, James R.

Electricity: circuit makers and breakers

Special application

Anti-intrusion type

200 83R, 200 6108, H01H 302

Patent

active

040469760

ABSTRACT:
A spring loaded trip string holding bobbin is deployed when a gas pressure upply is activated. The gas pressure forces a diaphragm member to move a detented biased camming release ring from a locking position to a deploying position. The initial movement of the release ring permits detent balls to move and release a sleeve element which holds the bobbin locked to a sensor assembly and initially prevents the movement of a post holding a breakwire sensing element which is attached to the personnel extended trip string. The release ring after a short interval of time automatically returns to its initial position unlocking the bobbin post so that the breakwire and the device will be responsive to string disturbance.

REFERENCES:
patent: 1309708 (1919-07-01), Velo
patent: 3003045 (1961-10-01), Tichenor
patent: 3156792 (1964-11-01), Long
patent: 3515067 (1970-06-01), Min

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