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:
May. 16, 2006
Filed:
Oct. 18, 2002
Shigeru Suzuki, Tokyo, JP;
Kouichi Aoyama, Tokyo, JP;
Satoru Shimada, Tokyo, JP;
Sumiko Seki, Yokohama, JP;
Takahiko Itoh, Yokohama, JP;
Shigeru Suzuki, Tokyo, JP;
Kouichi Aoyama, Tokyo, JP;
Satoru Shimada, Tokyo, JP;
Sumiko Seki, Yokohama, JP;
Takahiko Itoh, Yokohama, JP;
Saxa Inc., Tokyo, JP;
Yukigawa Institute Co., Ltd., Kanagawa, JP;
Abstract
A hydraulic apparatus realizes the same function as that of a variable discharge pump by regulating a hydraulic device such as a control valve in a state always operated at a substantially constant number of revolutions with a high efficiency regardless of the type of a hydraulic pump driven by a driving source such as a heat engine or electric motor. This hydraulic apparatus drives a hydraulic pump with a driving source internally or additionally provided with a predetermined amount of inertia, so as to construct a fixed pressure hydraulic source, and further provides peripheral devices corresponding to a required load, so as to open/close a control valve according to a state of a load including an energy accumulating device, a hydraulic motor, or the like such that the load can be supplied with an operating fluid ranging from a low flow rate at a high pressure to a high flow rate at a low pressure.