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:
Jan. 10, 2012
Filed:
Nov. 08, 2005
Takeharu Matsuzaki, Kariya, JP;
Shigeto Nakajima, Nagano, JP;
Takeharu Matsuzaki, Kariya, JP;
Shigeto Nakajima, Nagano, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi-Ken, JP;
Nishina Industrial Co., Ltd., Nagano-Ken, JP;
Abstract
A valve seatis arranged between the supply circuitand a downstream circuit. A valve bodyblocks a fluid flow between the supply circuitand the downstream circuitby contacting the valve seat. The valve bodyconnects the supply circuitto the downstream circuitfor supplying the fluid to the downstream circuitby separating from the valve seat. A through holeextends through the valve bodyand thus defines a part of the supply circuit. The through holeis defined in such a manner that the fluid that has flowed from the through holeproceeds between the valve seatand the valve bodyand is thus supplied to the downstream circuit. The valve bodyis formed in such a manner that a pressure receiving area at an upstream side of the through holeis smaller than a pressure receiving area at a downstream side of the through hole. This reduces a pressure loss caused by the fluid passing through a backflow prevention structure that permits forward fluid flow from the supply circuitto the downstream circuitbut prohibits backflow of the fluid.