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:
Jul. 07, 1981
Filed:
Sep. 13, 1979
Applicant:
Inventor:
Eugene R Speakman, Fullerton, CA (US);
Assignee:
McDonnell Douglas Corporation, Long Beach, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B25G / ; F16D / ; F16G / ; B25G / ;
U.S. Cl.
CPC ...
403408 ; 403393 ; 403404 ; 252 12 ; 427379 ; 4273882 ; 428422 ; 428461 ;
Abstract
Fretting caused by movement of adjacent structural members at high stress is prevented by providing a tetrafluoroethylene layer between the moving surfaces. The tetrafluoroethylene may be applied directly to the mating surfaces of parts or on the surfaces of shim stock inserted therebetween.