The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1985
Filed:
Apr. 30, 1984
Clinton W Hill, Romeo, MI (US);
U.S. Plastics Corporation, Mt. Clemens, MI (US);
Abstract
A gravity switch comprises a dielectric and a cup-shaped conductor pressed together in telescoping relationship to provide a hermetically sealed enclosure for a brass ball contact member rollable axially therein for selectively making or breaking an electrical contact between the sidewalls of the cup-shaped conductor and a point contact with a second conductor extending through the dielectric. The diameter of the ball is only slightly less than the diameter of the enclosure and is more than half the axial distance between the closed end of the cup-shaped conductor and the point contact of the second conductor in order to constrain the ball movement and reduce contact bounce. The various contact surfaces of the switch are silver plated and thoroughly cleansed to optimize current flow and maximize switch life within the hermetically sealed enclosure.