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. 20, 2012
Filed:
Jul. 31, 2008
Applicants:
Stefano Francini, Florence, IT;
Nicola Campo, Florence, IT;
Michele Bianchini, Florence, IT;
Inventors:
Assignee:
Nuovo Pignones, P.A., Florence, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 21/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A poppet valve is disclosed that include a valve body, a poppet guide disposed inside the valve body so as to form a flow passage from a flow inlet to a flow outlet of the valve, a poppet shutter disposed inside the poppet guide, and a converging-diverging flow passage formed by a portion of an outer surface of the poppet shutter and a corresponding portion of an inner surface of valve body. A method for reducing a closing pressure force acting on a poppet shutter of a poppet valve is also disclosed.