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:
Oct. 31, 1978
Filed:
Dec. 19, 1977
David B Ballantyne, Southfield, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An electrical switch includes a tubular body having a sleeve portion defining an axially extending bore and adapted for insertion into an aperture of a support such as a vehicle door framing member. An annular collar on the sleeve portion is engageable with the support to limit insertion of the sleeve portion into the support. A plunger assembly includes a plunger guide member supported within the bore and a plunger rod extending through the sleeve portion bore and the guide member. A head portion is provided on either the plunger rod or the guide member adjacent the end of the sleeve portion and is adapted to engage and cause axial collapse and radial expansion of the sleeve portion to mount the tubular body on the support. A coil compression spring encircles the plunger rod and acts to move the plunger rod axially and carry an electrical contact mounted thereon into switch closing engagement with the tubular body or the guide member. The plunger rod is adapted for engagement by the vehicle door to move the plunger rod against the spring bias and carry the electrical contact away from grounding engagement. The guide member may have a frictional interference with the tubular body so that an initial engagement by the door moves the guide member to an adjusted position.