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:
Apr. 30, 2013
Filed:
Dec. 04, 2009
Norman Arnold Turnquist, Sloansville, NY (US);
Keith Michael Parker, Greer, SC (US);
Xiaoqing Zheng, Niskayuna, NY (US);
Rodrigo Rodriguez Erdmenger, München, DE;
Robbert Christiaan Pannekeet, Munich, DE;
Alexander Kimberley Simpson, München, DE;
Biao Fang, Clifton Park, NY (US);
Norman Arnold Turnquist, Sloansville, NY (US);
Keith Michael Parker, Greer, SC (US);
Xiaoqing Zheng, Niskayuna, NY (US);
Rodrigo Rodriguez Erdmenger, München, DE;
Robbert Christiaan Pannekeet, Munich, DE;
Alexander Kimberley Simpson, München, DE;
Biao Fang, Clifton Park, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A pressure balance seal includes a sealing surface facing an inward radial direction, and a stator interface comprising at least one surface interfacing with a stator. The pressure balance seal further includes a friction reducing feature. The friction reducing feature includes a cavity on the sealing surface. The cavity is configured to receive a fluid such that a normal force acting on the pressure balance seal is counterbalanced by a force generated by a pressure of the fluid.