Hydraulic drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 29, 2005
Grant Date -
Sep 23, 2004
app pub date -
Dec 16, 2003
filing date -
Dec 17, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulic drive (1) has a position selection device (2) in communication with a control valve (3) which, as a function of the actuation of the position selection device (2), controls the connection of an actuating cylinder (8) with a hydraulic fluid source (5) and a reservoir (6). A correction device provides a synchronization between the position of the position selection device (2) and the position of the actuating cylinder (8). The correction device has a sliding valve means (15) which detects a reference range of the actuating cylinder (8) and an on-off valve means (16) effectively connected mechanically with the position selection device (2). The on-off valve means (16) is open when the position selection device (2) is in the reference range and is closed when the position selection device (2) is not in the reference range.
First Claim
Other Claims data not available
