Title:
ACCESS METHOD AND APPARATUS THAT LIMIT MOTION ACCORDING TO LOAD AND POSITION
Document Type and Number:
WIPO Patent Application WO2005113999
Kind Code:
A3
Abstract:
A hydraulic drive system for an access apparatus and a method of access is presented. The hydraulic drive system may include a hydraulic power unit, a hydraulic cylinder and a subsystem for limiting motion of the access system according to the position of and/or load supported by the access system. The subsystem may prevent motion, such as stowing and/or folding, when the access apparatus is supporting a load and/or is in a predetermined position. To limit motion, the subsystem may create a fluid path from the hydraulic power unit that bypasses the hydraulic cylinder, thus preventing the cylinder from moving the access apparatus. The subsystem may include a first valve that is opened when the access apparatus is in the predetermined position, and/or a second valve that is opened when the access apparatus is supporting a load.
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Inventors:
GOODRICH RONALD W (US)
Application Number:
PCT/US2005/017837
Publication Date:
March 16, 2006
Filing Date:
May 20, 2005
Export Citation:
Assignee:
BRAUN CORP (US)
GOODRICH RONALD W (US)
GOODRICH RONALD W (US)
International Classes:
F15B20/00; F16D31/02; (IPC1-7): B60P1/00
Foreign References:
US5180275A | 1993-01-19 | |||
US20010036397A1 | 2001-11-01 |
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