Compound suspension system
US4826207A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 15, 1988 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Jan 15, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/468
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
For better handling and improved riding comfort of a vehicle, there is provided a compound suspension system comprising a plurality of hydraulic shock absorbers each having a front chamber and a back chamber defined in front of and behind a piston member, respectively, received in a cylinder member, and a valve structure provided in each of the shock absorbers for selectively communicating the chambers to a conduit which is common to at least one other shock absorber, wherein: the valve structure comprises a valve element provided with a first part for varying a degree of communication between the front chamber and the common conduit and a second part for varying a degree of communication between the front chamber and the back chamber. The valve element is provided with two sets of openings which are spaced longitudinally from each other so as to cooperate with different ports provided in the piston rod as the valve element is turned about its longitudinal center by means of a control rod which extends longitudinally through a central bore of the piston rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.