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:
Mar. 16, 1993
Filed:
Aug. 14, 1991
Daniel R Reneau, Madison, WI (US);
Hamlin, Inc., Lake Mills, WI (US);
Abstract
A shock sensor has a housing defining an axially extending bore, a reed switch is centered within the bore by means of its axially extending leads and a transverse section of the housing which has an axially extending hole which centers one of the leads of the reed switch with the housing. The other lead of the reed switch is centered by a first retainer, which is fixed within the bore to align the reed switch within the housing with the axis of the housing. An activation magnet, is slidably mounted within the bore of the housing, and has a central hole passing over one of the axially extending leads. The magnet is biased by a spring away from the end activation region of the reed switch, which is near an end of the glass capsule which encloses the reed switch. The spring biases the activation magnet against a second retainer so that when the housing is not undergoing acceleration the activation magnet is biased to a position where the switch is not activated. The first and second retainers and perpendicular mounting leads are welded to the axial leads and are sealed from the atmosphere and joined to the bore of the housing by cast-in-place epoxy.