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:
Jun. 18, 2013
Filed:
Jul. 23, 2009
Colin Young, Derby, GB;
Paul Wilson, Long Eaton, GB;
Lou Peng, Derby, GB;
Rolls-Royce PLC, London, GB;
Abstract
Flow restrictors (), () are widely utilized with regard to providing flow control in such situations as with respect to sealing and pressurization of bearing chambers in gas turbine engines. The restrictor (), () restricts a flow (), () but with prior arrangements may be susceptible to deposition upon flank surfaces of the restrictor (). These depositions may fragment and block an aperture (), () of the restrictor (), () reducing operational effectiveness. By provision of a deflector () having a deflector surface () flows () can be presented such that a greater proportion of the flow including droplets or other matter which may result in surface deposition or erosion will pass directly through an aperture () rather than impinge upon the flank surfaces of the restrictor (). Furthermore, the deflector () is dimensioned such that surfaces which may be susceptible to deposition have dimensions smaller than the aperture ().