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. 04, 2013
Filed:
Oct. 19, 2007
Tomohiko Kitani, Sakura, JP;
Tomohiko Kitani, Sakura, JP;
Furukawa Unic Corporation, Chuo-ku, Tokyo, JP;
Abstract
Disclosed herein are embodiments of a pressurized-oil supply amount control device for a vehicle-mounted crane which has a dual pump system and which is capable of further inhibiting possible noise from an engine and improving fuel consumption. A predetermined control function is set for a controllerfor the pressurized-oil supply amount control device. Three regions R, R, Rare set for the predetermined control function according to the rate of an operation signal input. Based on the predetermined control function, the rotation speed of the engineis controlled, and the flow rate of pressurized oil is controlled by a flow rate control valve. This increases the total flow rate G of pressurized oil supplied to a control valvein proportion to the rate of the operation signal input to the crane.