Tilt-actuated switch

Details Tilt-actuated switch Tilt-actuated switch

1991-07-01

1992-10-06

Broome, Harold

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6145R, H01H 3502

Patent

active

051533944

ABSTRACT:
A tilt-actuated switch features a housing 11 and a contact element 14 movable within the housing between a stable first position and a second position in which the contact element electrically connects two fixed contact elements secured to the housing. The movable contact element responds to tilting of said housing beyond a predetermined critical angle, with respect to the vertical, by flipping from the stable first position through an unstable position (FIG. 2) into a second position (FIG. 3) which is stable. Unlike prior art tilt-actuated switches, this improved switch applies sufficient force against the fixed contacts, even when the tilting is gradual, to assure reliable electrical contact, necessary for applications such as a "dead-man-switch" in a portable radio transceiver.

REFERENCES:
patent: 2064827 (1936-12-01), Gardner
patent: 2099483 (1937-11-01), Hinde
patent: 4124841 (1978-11-01), Kettunen

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