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:
Nov. 26, 1996
Filed:
Nov. 23, 1994
Kalvin Watson, Chicago, IL (US);
Thomas W Kondziolka, Chicago, IL (US);
BRK Brands, Inc., Aurora, IL (US);
Abstract
A long life, surface mountable ambient condition detector includes a non-replaceable battery for the purpose of providing power to the detector. The detector includes an activation switch mechanism having a one-time, or single use turn-on characteristic. The activation switch mechanism switches the battery once from a non-conducting state to a state of electrical conduction with a control unit of the detector. The switch mechanism may include a frangible member for switching the battery from the non-conducting state to the electrical conducting state. Until the detector has been energized, the frangible member blocks mounting of the detector on the surface.