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:
Aug. 04, 1992
Filed:
Jun. 14, 1991
Applicant:
Inventors:
Samuel J Kutner, Lake Quivera, KS (US);
Herman B Turner, Jr, Kansas City, MO (US);
Assignee:
Heatron, Inc., Leavenworth, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219544 ; 219523 ; 219534 ; 338238 ;
Abstract
An improved cartridge heater comprising a electrical resistance heating wire coil enclosed in a stainless steel cylindrical sheath and having bonded thereto a coating containing a solid lubricant and a binder. The solid lubricant providing for ease of removal of the cartridge heater from a bore hole into which it has been inserted for use and providing a barrier to corrosion between the cartridge heater and the metal of the apparatus in which the bore hole is located.