Control system for steering a rear caster wheel
US9744989B1 · kind B1 · utility
1Cited by
8References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2016 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Apr 26, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D9/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic control system for steering rear caster wheels of a work machine. The control system has a steering mode that proportionally controls the steering of rear caster wheels while compensating the circuit to keep steering performance independent from the load generated by the rear caster wheels, a no steering mode that maintains the position of the rear caster wheels in the absence of a steering command, and a freewheeling mode that permits the rear caster wheels to rotate freely 360°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.