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:
Oct. 25, 2016
Filed:
Aug. 22, 2013
Kayaba Industry Co., Ltd., Tokyo, JP;
Takayuki Ogawa, Kanagawa, JP;
KYB Corporation, Tokyo, JP;
Abstract
An actuator includes a cylinder, a piston, a rod, a rod-side chamber and a piston-side chamber, a tank, a first pump capable of supplying liquid to the rod-side chamber, a second pump capable of supplying the liquid to the piston-side chamber, a first control passage allowing communication between the rod-side chamber and the tank, a second control passage allowing communication between the piston-side chamber and the tank, a first variable relief valve capable of changing a valve opening pressure for permitting a flow of the liquid by being opened when a pressure in the rod-side chamber reaches the valve opening pressure, a second variable relief valve capable of changing a valve opening pressure for permitting a flow of the liquid by being opened when a pressure in the piston-side chamber reaches the valve opening pressure, and a center passage allowing communication between the tank and the interior of the cylinder.