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. 29, 2011
Filed:
Apr. 09, 2003
Applicant:
Richard D. Zitting, New Harmony, UT (US);
Inventor:
Richard D. Zitting, New Harmony, UT (US);
Assignee:
SKF USA Inc., Kulpsville, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/12 (2005.12); F16J 9/20 (2005.12);
U.S. Cl.
CPC ...
Abstract
A seal for acceptance in an annular gland in a piston comprises an annular primary sealing element, an annular secondary sealing element disposed radially inwardly of the primary sealing element, and a pair of axially spaced back up rings disposed in axially spaced relation on opposite sides of the primary sealing element and having radially inner portions, respectively, engaged with the primary sealing element so as to lock the backup rings in the gland of the piston.