Damper for a hydropneumatic suspension element of a vehicle, and in particular a heavy vehicle
US4964492A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/467
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The damper comprises a fixed body (1A, 1B) provided with ports (3, 4) for the passage of hydraulic fluid, stacks (7) of flexible washers disposed in rigid deflectors (8) placed on each side of the body (1A, 1B) in facing relation to the ports (3, 4) and recesses and tubular inserts (5, 6) for allowing the passage of the fluid in only one direction for some ports (3) and in the opposite direction for the other ports (4). A disc (9) provided with at least two series of orifices (11, 12) having different diameters is disposed in the body. The orifices are arranged to be capable of coming into confronting relation with the ports (3, 4) of the body. The disc (9) is rotated through a given angle so as to place one of the series of orifices of the disc (9) in correspondence with the ports (3, 4) of the body. This arrangement permits adjusting the degree of damping so as to obtain the desired hardness or softness for the suspension in accordance with the utilization of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.