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. 22, 1983
Filed:
Feb. 08, 1979
Applicant:
Inventor:
Bernard J Berg, Kentwood, MI (US);
Assignee:
Foresight Enterprises, Incorporated, Grand Rapids, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219490 ; 219493 ; 219491 ; 219494 ; 219512 ; 1565839 ;
Abstract
The temperature of an electrically heated element is controlled by applying a current until the element reaches a threshold temperature, preferably determined by the expanded length of the elements, and then applying a predetermined voltage-current condition for a selected period of time. This is followed by repeated applications of such voltage-current conditions in response to the cooling of the heating element back to the threshold temperature.