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:
Apr. 26, 2011
Filed:
Aug. 28, 2009
Applicants:
Osamu Shindo, Yokohama, JP;
Hideaki Miyayashiki, Yokohama, JP;
Atsushi Narabe, Musashino, JP;
Makoto Takahashi, Yokohama, JP;
Inventors:
Osamu Shindo, Yokohama, JP;
Hideaki Miyayashiki, Yokohama, JP;
Atsushi Narabe, Musashino, JP;
Makoto Takahashi, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/00 (2006.01); F16K 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A steam valve is provided with a valve body, a valve seat, and a valve rod provided for the valve body. The valve body has a bottom portion to which a recessed portion is formed, and the recessed portion has an edge, which is positioned on an upstream side of a place at which a shock wave is generated in steam flowing through a steam path defined by the valve body and the valve seat.