Fluid-operated leveling valve systems
US5161817A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1990 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Oct 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86638
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A fluid suspension system has a valve including first and second valve parts coupled to a supporting structure and to a supported structure, respectively, and movable relative to each other in response to movements of the supporting structure and the supported structure relative to each other. One of these first and second valve parts has a port connected to a fluid spring of the suspension system, and the other of these first and second valve parts includes a fluid passage having an aperture at that port for a supply of fluid through that port to the fluid spring in a first relative position of these first and second valve parts. A fluid outlet in that other valve part is spaced from the port in a first relative position of the first and second valve parts, and communicates with that port for a removal of fluid from the fluid spring in a second relative position of the first and second valve parts. Reaction of the suspension system to vibrations is reduced by providing a fluid-tight seal between the aperture and the port, and between the fluid outlet and that port for the extent of first and second separations proportional to an amplitude of the vibrations to be tolerated without …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.