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. 11, 2012
Filed:
Oct. 27, 2006
Kripa Kiran Varanasi, Clifton Park, NY (US);
Shorya Awtar, Clifton Park, NY (US);
Frederick George Baily, Ballston Spa, NY (US);
Mark Edward Burnett, Barton, NY (US);
Farshad Ghasripoor, Scotia, NY (US);
Imdad Imam, Schenectady, NY (US);
Norman Arnold Turnquist, Sloansville, NY (US);
Kripa Kiran Varanasi, Clifton Park, NY (US);
Shorya Awtar, Clifton Park, NY (US);
Frederick George Baily, Ballston Spa, NY (US);
Mark Edward Burnett, Barton, NY (US);
Farshad Ghasripoor, Scotia, NY (US);
Imdad Imam, Schenectady, NY (US);
Norman Arnold Turnquist, Sloansville, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Disclosed is an actuator that includes a cylinder having an input port, a piston disposed at least partially inside of the cylinder, and one or more piston rings disposed in a circumferential piston ring groove or grooves. The actuator also includes at least one spring, inserted into the circumferential piston ring groove adjacent to the one or more piston rings and a high pressure side of said piston ring. The spring preloads the one or more piston rings to seal between a low pressure face of the one or more piston rings and a low pressure face of the circumferential piston ring groove. The invention also includes a method for moving an adjustable seal in a radial direction using the piston-ring sealed actuator. The method includes moving the adjustable seal in an axial direction, breaking a primary axial contact between the adjustable seal and a primary sealing face.