Power steering system for electric-drive lift truck
US3976158A · kind A · utility
8Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1975 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Apr 25, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/09
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic system for an electrically powered lift truck or the like supplies pressurized fluid for powering implements and for powering a hydraulic power steering system which is provided with hydraulic accumulator means for accumulating a supply of pressurized fluid for providing fluid for steering the vehicle for a predetermined period of time. A pressure-responsive charging valve is provided for maintaining a minimum amount of pressure in the accumulator and includes control means responsive to system pressure for activation and deactivation of an electric motor for powering a pump for the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.