Hydropneumatic suspension element of a heavy vehicle or a landing set of wheels of an aircraft
US4730817A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1985 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Dec 4, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C25/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The element comprises a tubular body connected to the hub of a wheel and pivotally connected to the base of the chassis (5) by an arm. This body is slidably mounted on a rod (4) pivotally connected to the chassis (5) of the vehicle, the tubular body containing a gas chamber (11) and a hydraulic liquid chamber (13) divided into two compartments by a central ring (25) fixed to the rod (4). According to the invention, there is provided a device (15) for drawing the hydraulic liquid and disposed outside the tubular body (2) which is slidably mounted on the rod (4) by two fluidtight bearings (42, 55) forming the ends of the hydraulic chamber (13) and spaced apart by a constant distance. The drawing device (15) permits the dissipation to the exterior of the hydraulic chamber (13) of the heat stored by the oil during the reciprocating motions of the suspension element and thus avoids the disadjustment of the ground clearance of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.