Suspension and load leveling for an urban hauler
US3970327A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2800/915
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tandem axle suspension assembly for a vehicle includes a pair of axles pivotally supported to the vehicle frame and including resilient means supporting the frame above each of the axles. The resilient means includes fluid cylinders for each of the axles and a source of fluid in open communication with both sets of cylinders and an accumulator to maintain an even load distribution on the respective axles. The fluid system includes a valve responsive to the position of one of the axles with respect to the frame to maintain the frame and axles at a predetermined distance apart. Means are also provided for raising one of the axles from contact with the supporting ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.