Detent hold and release mechanism

Details Detent hold and release mechanism Detent hold and release mechanism

G - Physics

05

G

74/289

G05G 5/00 (2006.01) H01H 3/50 (2006.01) H01H 51/01 (2006.01)

Patent

CA 1195536

ABSTRACT OF THE DISCLOSURE A detent hold and release mechanism on a manually positioned valve controller which electrically signals a servo controlled conventional hydraulic control valve. The mechanism has a detented operating position and a spring-returned neutral position when the detent is released; the detent is held in operating position by a locking pawl urged by a permanent magnet. The mechanism is released by energizing an electro-magnet positioned adjacent the permanent magnet with reverse polarity whereby the combined magnet forces are neutralized, thereby releasing the pawl and allowing the valve con- troller to return to the neutral position.

413834

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