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:
Jun. 16, 2015
Filed:
Mar. 17, 2009
Takashi Usui, Toyota, JP;
Yoshinori Takeuchi, Toyota, JP;
Takeyuki Yabuuchi, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A pulsation damper mounted in a fuel chamber () of a high-pressure fuel pump () is provided with a diaphragm () having a flat section () displaced when fuel pressure is applied thereto, a pump cover () for supporting the diaphragm (), and a gas chamber () formed by the diaphragm () and the pump cover (). Pressure pulsation occurring in the fuel chamber () is suppressed by displacement of the flat section (). The diaphragm () is formed in a closed-bottomed tubular shape with the flat section () located at the bottom and has a projection () provided to the periphery of the flat section () and projecting to the side opposite to the pump cover (). A tubular peripheral section extending from the outer periphery of the projection () so as to be vertical to the flat section () is fitted over the pump cover (). The externally fitting portion of the tubular peripheral section is a joint section () joined to the pump cover ().