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:
Sep. 24, 2013
Filed:
Jan. 11, 2007
Shorya Awtar, Clifton Park, NY (US);
Timothy R. Kemp, Greenfield Center, NY (US);
Kurt N. Laurer, Saratoga Springs, NY (US);
Frederick G. Baily, Ballston Spa, NY (US);
Shorya Awtar, Clifton Park, NY (US);
Timothy R. Kemp, Greenfield Center, NY (US);
Kurt N. Laurer, Saratoga Springs, NY (US);
Frederick G. Baily, Ballston Spa, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An active retractable seal assembly for use between rotating and non-rotating turbo machinery components including: a plurality of seal rings mounted to the non-rotating component, the seal rings movable toward and away from the rotating component between respective closed and open positions as a function of pressure drop across the seal rings, wherein the seal rings are normally in the open position; and a fluid bypass circuit for directing fluid around one or more of the plurality of seal rings to reduce the pressure drop across the one or more of the seal rings, thereby causing the one or more seal rings to move towards the open position under the action of spring(s) or actuator(s).