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:
Mar. 19, 1996
Filed:
Aug. 06, 1993
Applicant:
Inventor:
Dennis M DeFreitas, Oxford, NY (US);
Assignee:
Simmonds Precision Engine Systems, Akron, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02C / ;
U.S. Cl.
CPC ...
60 3906 ; 60 39821 ;
Abstract
A temperature sensor for detecting temperature of a heating element of an igniter such as a glow plug includes optic means disposable near the igniter for receiving at least a portion of electromagnetic energy emitted by the heating element and coupling the received electromagnetic energy to a circuit means for producing an output related to the temperature of the igniter in relation to a characteristic of the received electromagnetic energy. In one embodiment, the optic means comprises optic fibers that receive electromagnetic energy emitted by the heating element and couple that energy to a photosensitive detector.