Position activated mercury switch

Details Position activated mercury switch Position activated mercury switch

2006-02-21

2006-02-21

La, Anh V. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S689000, C200S06145M, C200S061520

Reexamination Certificate

active

07002482

ABSTRACT:
A mercury switch which is actuated only on a specific movement of an individual by design of an internal cavity of the switch to control movement of a mercury ball into and out of engagement with two electrical contacts. The internal cavity has a truncated cone for receipt of the mercury ball, a surface of revolution sloping outward from the opening of the truncated cone and an interruption ramp in this surface of revolution to guide the mercury ball into the truncated cone for actuation of a switch when a critical angle of the switch has been exceeded.

REFERENCES:
patent: 2794084 (1957-05-01), Segoni
patent: 5008654 (1991-04-01), Callaway
patent: 5146206 (1992-09-01), Callaway
patent: 5767467 (1998-06-01), Grant
patent: 6087936 (2000-07-01), Woods
patent: 6356203 (2002-03-01), Halleck et al.
patent: 6853301 (2005-02-01), Devine

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