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:
Oct. 24, 2000
Filed:
Dec. 10, 1998
Applicant:
Inventors:
Eric M Desrochers, Nashua, NH (US);
Steven J Gaul, Haverhill, MA (US);
Herbert A Winters, Center Barnstead, NH (US);
Assignee:
Phoenix Controls Corporation, Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340540 ; 3405451 ; 3405452 ; 3405453 ; 3405459 ; 340547 ; 3406861 ;
Abstract
A fume hood sash sensor uses multiplexed sensors to measure sash position. The sensor transmitter or receiver elements may be multiplexed. Furthermore, the sensor may employ passive, passive remote powered transponder, or powered transponder elements on the sashes to measure sash position.