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. 11, 2007
Filed:
Feb. 01, 2005
Keith Christopher Goldfinch, Bristol, GB;
Keith Christopher Goldfinch, Bristol, GB;
Rolls-Royce plc, London, GB;
Abstract
A rotor blade, a rotor disc () or load bearing assembly having at least one bearing surface () for contact with a corresponding bearing surface (). At least one selected area of the bearing surface () which, in operation, is an area of alternating stress greater than about 50 MPa (peak to peak), is configured to have a co-efficient of friction lower than the remainder of the bearing surface (). The selected area () having a co-efficient of friction lower than the remainder of the bearing surface () may be provided by the application of a dry film lubricant, with the remaining area(s) () of said bearing surfaces () being substantially free of the said coating.