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. 16, 1999
Filed:
Jul. 31, 1996
Applicant:
Inventors:
Natan E Parsons, Brookline, MA (US);
Joel S Novak, Sudbury, MA (US);
Martin E Marcichow, Hoffman Estates, IL (US);
Assignee:
Arichell Technologies, Inc., West Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; H01J / ;
U.S. Cl.
CPC ...
25112904 ; 4623 ; 250221 ;
Abstract
A control circuit (56) for responding to infrared light from a target region and operating an electric valve (54) in response is disposed at a protected location remote from the target region. It detects the presence of objects by means of light conducted to it by a fiber-optic cable (32).