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, 2007
Filed:
Jun. 30, 2006
Applicants:
Duncan E Ashley, Bristol, GB;
Peter Allford, Bristol, GB;
Martin Lawrence, Bristol, GB;
Inventors:
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fluid flow machine comprises an array of vanes () which are supported at their ends by inner and outer support structures. The ends of the vanes are received in slots, with resilient materialdisposed between the vaneand the wall of the slot. A restraint elementis mounted in a recessof the support structureand is engaged by a notchin the vaneto restrict axial displacement of the vane. Consequently, vibration of the vane in directions perpendicular to the lengthwise direction of the vane are damped by the elastomeric materialbut bodily axial displacement of the vaneis prevented by the restraint elements