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. 10, 2009
Filed:
Mar. 19, 2004
Per-ola Vallebrant, Trollhättan, SE;
Mikael Sannelius, Älvsjö, SE;
Per-Ola Vallebrant, Trollhättan, SE;
Mikael Sannelius, Älvsjö, SE;
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
The present invention relates to an arrangement for controlling a hydraulically driven motor (), forming part of a hydraulic system in which hydraulic fluid under pressure forms a main flow through a main duct () in which the motor is connected. The motor is adapted to drive a load with varying loading, and one or more valves () are adapted for controlling the hydraulic fluid flow through the motor on the one hand during operation and on the other hand for starting and stopping of the motor. One of the valves consists of a flow control valve () which is connected in the main duct () downstream of the motor () and is adapted for on the one hand starting/stopping of the motor and on the other hand constant flow control of the hydraulic fluid flow through the motor.