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. 25, 1990
Filed:
May. 02, 1989
Wilhelm Hoffmueller, Munich, DE;
Josef Eichner, Scheyern, DE;
MTU Motoren- und Turbinen-Union Muenchen GmbH, Munich, DE;
Abstract
A foil intermediate layer is arranged between machine parts forming a joint to protect the machine parts against fretting corrosion. The foil intermediate layer includes at least two foils or plies of which the respective inner contact surfaces contacting each other, have a lower coefficeint of friction and a higher resistance to wear and abrasion, than the respective outer surfaces of the foils or plies contacting the joint forming surfaces of the machine parts. Thus, relative motion between the machine parts forming the joint under oscillating loads or vibrations, is transmitted to the easily gliding wear resistant contact surfaces of the plies so that the machine parts are protected from fretting corrosion, whereby their operating lifetime is increased.