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:
Aug. 30, 2016
Filed:
Oct. 11, 2013
Applicant:
Kalsi Engineering, Inc., Sugar Land, TX (US);
Inventors:
Aaron Paul Richie, Houston, TX (US);
Lannie Laroy Dietle, Houston, TX (US);
Assignee:
Kalsi Engineering, Inc., Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 9/00 (2006.01); F16J 15/44 (2006.01); F16J 15/00 (2006.01); F16J 15/16 (2006.01);
U.S. Cl.
CPC ...
F16J 15/441 (2013.01); F16J 15/006 (2013.01); F16J 15/166 (2013.01);
Abstract
A seal backup ring assembly is provided that eliminates fluid differential pressure acting radially on the backup ring, preventing collapse of the backup ring against a shaft. The backup ring is assembled so that the initial clearance (extrusion gap) between the backup ring and relatively rotating member is not affected by the differential pressure acting across the assembly. This allows for an initially small extrusion gap to be present throughout the differential pressure range.