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:
Dec. 24, 1985
Filed:
Apr. 15, 1983
Applicant:
Inventor:
Jack H Smuckler, Marblehead, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B09C / ; H01H / ;
U.S. Cl.
CPC ...
264105 ; 264174 ; 264235 ; 264236 ; 264346 ; 264347 ;
Abstract
Crystalline polymers having a relatively high melt index and low structured carbon black together produce positive temperature coefficient material which can attain suitable volume resistivity with a greatly reduced annealing time. Temperature self-regulating resistive heating elements may be made with the material in a continuous process where annealing is conducted in a heated zone while the extruded element is in motion or during a short interval when its motion is interrupted.