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:
Feb. 28, 2006
Filed:
Feb. 26, 2003
Tomonori Mouri, Yamanashi, JP;
Takato Ogiwara, Yamanashi, JP;
Yasuhiko Amari, Yamanashi, JP;
Naganori Koshimizu, Yamanashi, JP;
Tomonori Mouri, Yamanashi, JP;
Takato Ogiwara, Yamanashi, JP;
Yasuhiko Amari, Yamanashi, JP;
Naganori Koshimizu, Yamanashi, JP;
Kabushiki Kaisha Hitachi Seiksakusho, Tokyo, JP;
Abstract
A master cylinder has a cylinder member in the shape of a cylinder, one end of which is closed, and a piston inserted in the cylinder member to form a pressure chamber in the cylinder member. The cylinder member is formed with a port for providing communication between the pressure chamber and a reservoir. The port is formed during casting of the cylinder member, thereby eliminating the need to form the port by boring, and forming the port into an elongated-hole shaped sectional configuration.