Power steering system for heavy load dollies
US4044854A · kind A · utility
10Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | May 14, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D61/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A multiple dolly system for transporting large loads in which individual dollies are simultaneously power-steered through a fluid linkage steering control. Castered wheels of the dollies are steered by fluid power actuators having appropriate ones of their working chambers connected in parallel circuit arrangements, wherein ground reaction forces on the castered steerable wheels are equalized by the tendency of the parallel fluid circuits and actuator chambers to reach a balanced minimum pressure, and whereby the wheels, seeking a path of least resistance, are self-synchronizing in their steering displacements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.