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. 02, 1991
Filed:
Oct. 16, 1989
Applicant:
Inventor:
Stanley A Edwards, Wallasey, GB;
Assignee:
United Kingdom Atomic Energy Authority, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
250340 ; 250347 ; 250349 ; 340578 ;
Abstract
For the detection of heat sources within an area to be maintained under surveillance, several scanning units at different scanning stations are linked to a common radiation sensor by respective optical fibre transmission elements. A gating means, such as a rotary mask with an opening, is indexed stepwise to gate each transmission element in turn to the common sensor.