Title:
SEAMLESS CONTROL OF SPRING STIFFNESS IN A LIQUID SPRING SYSTEM
Document Type and Number:
WIPO Patent Application WO2003036125
Kind Code:
A3
Abstract:
A vibration control system having a liquid spring (510) positioned between a vehicle frame and a vehicle wheel(502). The liquid spring (510) uses a compressible fluid to seamlessly generate spring and/or damping forces in the vibration control system in response to relative displacement between the frame and the wheel (502). A second volume of compressible liquid (518) is connected to the liquid spring (510) by a fluid passage (520). A valve (522) is coupled to the fluid passage (520) and is selectively operable to place the second volume (518) in communication with the liquid spring (510). A controller (540) is electrically coupled to the valve (522) and emits a control signal to control the valve (522) in response to signals from vehicle sensors (550, 552, 554).
Inventors:
DELORENZIS DAMON (US)
CAJULIS CONRAD (US)
MEYER RICHARD J (US)
CAJULIS CONRAD (US)
MEYER RICHARD J (US)
Application Number:
PCT/US2002/031230
Publication Date:
September 18, 2003
Filing Date:
September 30, 2002
Export Citation:
Assignee:
LIQUIDSPRING TECHNOLOGIES INC (US)
DELORENZIS DAMON (US)
CAJULIS CONRAD (US)
MEYER RICHARD J (US)
DELORENZIS DAMON (US)
CAJULIS CONRAD (US)
MEYER RICHARD J (US)
International Classes:
B60G17/015; E04H9/02; B60G17/019; B60G17/04; F16F5/00; F16F9/10; F16F15/02; (IPC1-7): B60G17/015
Foreign References:
| US4916632A | 1990-04-10 | |||
| US4693493A | 1987-09-15 | |||
| US5145205A | 1992-09-08 | |||
| US5102161A | 1992-04-07 | |||
| US4975849A | 1990-12-04 | |||
| US5347457A | 1994-09-13 | |||
| US5360230A | 1994-11-01 |
Other References:
See also references of EP 1446592A4
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