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:
Aug. 18, 1987
Filed:
Nov. 05, 1984
Applicant:
Inventor:
Peter Frank, London, GB;
Assignee:
Product Innovation Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340571 ; 340566 ; 340689 ; 200 / ;
Abstract
A movement sensor having a movable part, detection means for providing a first detection signal when the part is in one position and a second detection signal when the part is in a different position, and means for producing an alarm signal in response to the first and second detection signals being successively provided after initiation of the operation of the sensor irrespective of the order in which said signals are provided.