Air suspension system
US4761020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S280/01
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air spring, for suspension of a vibrating body on a base, comprising a bellows with an air-filled interior which can be connected as needed by a control valve to a compressed-gas reservoir or to the atmosphere. The control valve is actuated by a piston whose front face is acted upon by the internal pressure of the air spring bellows and whose rear face is acted upon by a gas cushion of variable pressure contained in a pressure chamber, and which produces a compensation of vibration-caused pressure changes in the bellows by feeding additional compressed air in or letting compressed air out. The pressure chamber is provided with a signal-operated inlet valve and a signal-operated outlet valve, and these valves are electrically connected to the signal transmitter of a displacement detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.