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:
Sep. 22, 2009
Filed:
May. 07, 2007
Applicants:
Dennis O. Courtright, Easley, SC (US);
Enzo Soncini, Raggio Nell Emilia, IT;
Davide I. Davoli, Reggio Nell Emilia, IT;
Inventors:
Dennis O. Courtright, Easley, SC (US);
Enzo Soncini, Raggio Nell Emilia, IT;
Davide I. Davoli, Reggio Nell Emilia, IT;
Assignee:
Sauer-Danfoss, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 21/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.