Steering pressure responsive differential lock control system
US4523494A · kind A · utility
10Cited by
22References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Jun 13, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K23/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A differential lock control system includes a solenoid valve which operates hydraulic differential lock mechanisms in response to the operation of a control circuit. The control circuit includes normally closed, steering-responsive switches which open to unlock the differential when steering effort exceeds a certain level. The steering-responsive switches are operated by pins which are exposed to pilot pressures on either end of a valve spool of a conventional pilot-operated steering valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.