Steering system including tandem hydraulic cylinders with self-synchronization
US4006664A · kind A · utility
19Cited by
2References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1975 |
| Grant date | Feb 8, 1977 |
| Priority date | — |
| Expiry date | Apr 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/1563
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention is especially suitable when front and rear wheels are hydraulically steered, each set by its own hydraulic cylinder, the two cylinders being connected in hydraulic tandem so that the same angularity of steering will be imparted to both sets of wheels. The self-synchronizing of the present invention overcomes a serious prior fault that occasionally a nonsynchronous relationship would develop. The present invention opens a synchronizing valve on the occasion of each extreme swing of the wheels. A check valve then ensures a synchronized return swing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.