Hydropneumatic suspension
US7341263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2004 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Jun 13, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G17/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydropneumatic suspension having at least one suspension cylinder (10) and at least one hydraulic accumulator configured as a suspension accumulator (18) has a pilot-actuated valve (20) for opening or blocking a fluid-carrying connection between the suspension cylinder (10) and the suspension accumulator (18). The pilot-actuated valve (20) can be moved into the blocked position by a hydraulic actuating assembly (22). The hydraulic actuating assembly (22) taps the fluid pressure between suspension accumulator (18) and the suspension cylinder (10), and forwards it by a switching valve (24) to an operating side (26) of the pilot-actuated valve (20) through a pilot-actuated line (38). Another proportional valve (50), or such valve connected to the respective associated pilot-actuated line (38), can be between one switching valve (24) and the pilot-actuated valve (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.