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. 21, 2018
Filed:
Dec. 01, 2015
Applicant:
Parker-hannifin Corporation, Cleveland, OH (US);
Inventor:
David John Anderson, Plymouth, MN (US);
Assignee:
Parker-Hannifin Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/044 (2006.01); F15B 13/02 (2006.01); F15B 15/18 (2006.01); F15B 15/02 (2006.01); F16K 15/02 (2006.01); F16K 15/18 (2006.01);
U.S. Cl.
CPC ...
F15B 13/027 (2013.01); F15B 11/044 (2013.01); F15B 15/18 (2013.01); F16K 15/025 (2013.01); F16K 15/185 (2013.01); F16K 15/186 (2013.01); F15B 2211/20561 (2013.01); F15B 2211/3051 (2013.01); F15B 2211/40584 (2013.01); F15B 2211/785 (2013.01); Y10T 137/7866 (2015.04); Y10T 137/7867 (2015.04);
Abstract
A check seat assembly includes a check valve seat with a by-pass passage in parallel with a check valve passage of the check seat assembly to meter flow and maintain stability of a hydraulic system, such as a hydraulic cylinder. The check valve may include an o-ring seated in a V-shaped groove. The check seat assembly may allow flow from a pump to a hydraulic cylinder to freely pass through the check valve to pressurize one side of a piston of the hydraulic cylinder, such as a front side of the piston to retract a corresponding rod connected to the piston.