Hydraulic cab tilting system having full locking with controlled free-fall
US4410056A · kind A · utility
8Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | May 27, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D33/07
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An hydraulic tilt system and method for its use with a cab pivotally mounted on a motor vehicle frame. An hydraulic piston-cylinder assembly pivotally connects between the cab and the frame. A remote control station has an hydraulic pump, a reservoir, and a control for operating the pump to tilt the cab. Hydraulic lines connect the control station with the piston-cylinder assembly. Check valves in the hydraulic lines stop the tilting motion of the cab in case of loss of hydraulic pressure. A controlled return free-fall valve is also disposed in the hydraulic lines to selectively restrict the flow of hydraulic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.