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:
Jul. 04, 1995
Filed:
Aug. 05, 1994
Takashi Akiba, Kariya, JP;
Tatsuya Matsumoto, Kariya, JP;
Masao Yonekawa, Kariya, JP;
Takehiko Terada, Kariya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
In a fuel pressure regulator, the interior of a housing is divided into an air chamber and a fuel chamber by a diaphragm. A throttle portion is made up of a movable valve and a valve seat provided in the fuel chamber. The valve seat includes a fuel passage in communication with a fuel outflow pipe acting as an outflow passage for the fuel. The fuel passage is formed in such a shape that its cross-sectional area is gradually increased from the inlet side toward the outlet side. A valve seat holder includes an end face diposite to the movable valve, which end face is disposed on the same plane as an end face of the valve seat on the inlet side. The valve seat holder also includes a shoulder portion provided with a smoothly curved surface extending from the end face opposite to the movable valve to an outer peripheral side surface of the valve seat holder.