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. 29, 2005
Filed:
Dec. 16, 2003
Eugen Stall, Neunkirchen, DE;
Eugen Stall, Neunkirchen, DE;
STILL GmbH, , DE;
Abstract
A hydraulic drive () has a position selection device () in communication with a control valve () which, as a function of the actuation of the position selection device (), controls the connection of an actuating cylinder () with a hydraulic fluid source () and a reservoir (). A correction device provides a synchronization between the position of the position selection device () and the position of the actuating cylinder (). The correction device has a sliding valve means () which detects a reference range of the actuating cylinder () and an on-off valve means () effectively connected mechanically with the position selection device (). The on-off valve means () is open when the position selection device () is in the reference range and is closed when the position selection device () is not in the reference range.