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:
May. 18, 1993
Filed:
Sep. 11, 1992
Applicant:
Inventors:
Jonathan B Arold, Exeter, NH (US);
E Forrest Decatur, E. Kingston, NH (US);
Joan L Mishou, Portsmouth, NH (US);
Assignee:
GTE Products Corporation, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; F24H / ;
U.S. Cl.
CPC ...
392488 ; 219502 ; 392379 ; 392473 ; 392491 ;
Abstract
A forced gas electric heater has a serpentine heating element disposed within a cylindrical glass tube. Infrared radiation emanating from the heating element enters the glass tube whereby part of the infrared radiation is directed within the wall of the glass tube to the edge of the glass tube. An infrared sensor is in line of sight with the edge of the glass tube. The infrared sensor senses the hot spot temperature of the heating element and, together with a controller, limits the maximum hot spot temperature of the heating element.