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. 30, 2014
Filed:
Nov. 15, 2013
Rolls-royce Plc, London, GB;
Ingo Henry Johannes Jahn, West End, AU;
Rolls-Royce PLC, London, GB;
Abstract
There is disclosed a rotary air-riding seal between a first structure and an adjacent second structure, including: first and second seal members defining respective seal surfaces facing to one another. The first seal member is provided on the first structure and the second seal member is mounted to the second structure towards the first seal member. At least one of said seal members is configured to generate a riding film of air between said seal surfaces. One of said seal members is supported for axial oscillation relative to the other seal member by a secondary support arrangement configured to bias said seal member towards the other seal member. The said secondary support arrangement accommodates relatively high frequency axial movements between the seal members.