Position activated mercury switch
OwnerJames J. Callawayinventor
Life of this patent
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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.
Claims16
A position activated switch comprising:
- a switch body, and
- an internal cavity of the switch body including a truncated conical surface terminating at an open end in a surface of revolution, the surface of revolution sloping outwardly from the open end of the truncated conical surface, and a ramp surface interrupting the surface of revolution, the ramp surface extending into the truncated conical surface.
A patent ambulation motion detector comprising:
- a switch body,
- an internal cavity of the switch body including a truncated conical surface terminating at an open end in a surface of revolution, the surface of revolution sloping outwardly from the open end of the truncated conical surface, and a ramp surface interrupting the surface of revolution, the ramp surface extending into the truncated conical surface,
- a mounting flange for supporting the switch body.
The patent ambulation motion detector 8, wherein the mounting flange has two mounting openings.
Dependencies are inferred from the claim text.