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:
Jan. 09, 2007
Filed:
Sep. 28, 2005
Richard Nicholson, Littleover, GB;
James E. Forfar, Beeston, GB;
Richard Nicholson, Littleover, GB;
James E. Forfar, Beeston, GB;
Rolls-Royce plc, London, GB;
Abstract
A seal arrangement () is provided in which seal elements () incorporate passages () allowing an air flow to be presented to tip edges () of the seal elements, in order to create air suspension and diminish excessive wear. These passages () are created by recesses in the respective adjacent juxtaposed seal elements (). In a seal assembly () a seal arrangement () is secured within a float chamber () whereby radial movement is allowed to accommodate for movements in the shaft (). The radial movement is resisted by a bias created by air flow () into the float chamber (). The air flow () may also be presented through the passages () in order to create the desired air suspension of the seal elements ().