Torque limiting control for front wheel drive
US4174614A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1978 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Feb 1, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/472
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle drive system including a wheel adapted to at least partially propel a vehicle over underlying terrain and a hydraulic motor coupled to the wheel to drive the same. A flow and pressure compensated pump has an output for providing hydraulic fluid under pressure to the motor and includes a control system having an input for receiving a hydraulic signal and for controlling pressure and flow output characteristics of the pump. A manually settable, pressure reducing valve interconnects the pump output and the control system input to provide a substantially constant, but adjustable, pressure signal to the control system so that output pressure from the pump to the motor may be controlled independently of loading on the motor to set the maximum torque delivery of the motor at a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.