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:
Mar. 31, 2015
Filed:
Feb. 02, 2010
Mitsuhiro Yoshimoto, Ibaraki, JP;
Hideaki Itou, Ibaraki, JP;
Sakurako Hirano, Ibaraki, JP;
Masaki Takao, Ibaraki, JP;
Mitsuhiro Yoshimoto, Ibaraki, JP;
Hideaki Itou, Ibaraki, JP;
Sakurako Hirano, Ibaraki, JP;
Masaki Takao, Ibaraki, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A pilot valve assembly comprised of a pilot valve proper employing a spool to be displaced in a valve casing to bring a hydraulic pressure port and an output port into and out of communication with each other, an operation means having an operating lever with a cam member attached thereto, a pivoting shaft erected on an end plate of the pilot valve proper and connected with the manual operating lever through a universal joint, and a boot of a resilient material hermetically connected between the operation means and the end plate in such a way as to completely enshroud said universal joint, cam member and pusher, the end plate being detachably fixed to the mount member, and the boot having one end thereof connected to the operation means and having the other end hermetically gripped between the end plate and the mount member.