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US 4,820,888 AGranted
Tilt switch replacing mercury switches
OwnerLarry E. Shieldsinventor
Life of this patent
Estimating the term…
Abstract
A tilt switch encapsulated by epoxy resin in a polyvinyl chloride housing for high strength is provided. Actuation of the tilt switch is effected when moved through an arc of 45.degree. or less.
Claims2
A tilt switch including in combination
- an elongated housing having a cylindrical bore,
- a reed switch positioned in said bore,
- first and second wires connected to said reed switch and extending from one end of said bore,
- a first plug positioned in said bore adjacent said reed switch,
- a magnet positioned adjacent said first plug in said bore, and
- a second plug positioned at the end of said bore whereby said magnet may move in said bore in response to movement of said housing upward and downward in an arc from an horizontal plane.
3 more elements
Dependencies are inferred from the claim text.