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. 09, 2010
Filed:
Oct. 12, 2005
Michael Agg, Bristol, GB;
Michael Morrison, North Somerset, GB;
Christopher Wright, Bristol, GB;
Rolls-Royce PLC, London, GB;
Abstract
The present invention provides a retaining washer for retaining threaded fasteners, such as bolts, that have been inadvertently loosened, in use. The invention finds particular application in gas turbine engines and in aircraft in general where wire locking of threaded fasteners has traditionally been employed. The washer () comprises a base member () having a plurality of apertures () each for receiving the shank of a respective bolt () or stud part of a threaded fastener, and engagement means () extending from the base member for engagement with respective bolt head or nut parts of the fasteners to retain the said head or nut parts with respect to the washer in the event of inadvertent loosening. The said engagement means is deformable between an open configuration which enables access to the bolt head or nut parts of the fasteners for tightening and/or removal thereof and a closed configuration in which the bolt head or nut part are captively retained with the washer.