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:
Jun. 10, 1980
Filed:
Jun. 29, 1978
Applicant:
Inventors:
John H Haglund, Danbury, CT (US);
Robert G Grandi, Park Ridge, IL (US);
Assignee:
The Kanthal Corporation, Bethel, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219381 ; 219304 ; 219307 ; 219375 ; 219546 ; 219553 ; 338302 ; 338298 ; 338333 ;
Abstract
A porcupine wire coil of electric resistance wire is positioned in a tube having an electrically insulating inside in which the peaks or looped ends of the coil convolutions are embedded so as to hold the coil convolutions spaced from each other. When the coil is energized, fluid flowed through the tube can be heated.