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:
Nov. 18, 2008
Filed:
Mar. 19, 2004
Per-ola Vallebrant, Trollhättan, SE;
Mikael Sannelius, Älvsjö{umlaut over ( )}, SE;
Per-Ola Vallebrant, Trollhättan, SE;
Mikael Sannelius, Älvsjö{umlaut over ( )}, SE;
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
An arrangement for controlling two drive units which interact with one another, one of which includes a hydraulically driven motor (). The motor drives a varying load, and one or more valves () control hydraulic fluid flow through the motor during operation and for starting and stopping of the motor. One of the valves is a flow control valve () for flow control of the hydraulic fluid flow through the motor. The second drive unit () performs a working movement which, under the action of hydraulic flow influences the loading of the motor. The flow of the hydraulic fluid to the second drive unit is controlled in a coordinated way with the control of the flow through the motor.