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:
Mar. 29, 2011
Filed:
Nov. 05, 2007
Applicant:
Francis J. Martin, Huntington, NY (US);
Inventor:
Francis J. Martin, Huntington, NY (US);
Assignee:
Ausco, Inc., Port Washington, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 21/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A relief valve includes a body, a damping chamber in the body, a poppet in the body, wherein the poppet includes an end in the damping chamber, and a check valve in the damping chamber. The damping chamber is located adjacent an inlet side of the relief valve, and the check valve includes a sealing member to prevent fluid flow into the damping chamber at the inlet side. The sealing member is unseated during opening of the poppet to permit fluid to flow into the damping chamber at the inlet side.