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. 30, 1993
Filed:
Aug. 08, 1991
Applicant:
Inventor:
Eugene A Duncan, Saline, MI (US);
Assignee:
Mather Seal Company, Milan, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156 64 ; 1562724 ; 156293 ; 156333 ; 156378 ; 277152 ; 428422 ;
Abstract
Polytetrafluoroethylene (PTFE) is bonded to a metal substrate such as an oil seal casing via an intermediary bonding layer of fluorinated ethylene propylene (FEP). Induction heating is used to rapidly melt the FEP and PTFE without degrading their physical properties. The induction heating unit is preferably controlled by a temperature signal representing the temperature of the metal substrate.