Output split type hydrostatic transmission
US3969958A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Mar 25, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/0886
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic transmission includes a hydraulically controlled speed differential means drivingly connected with an output shaft for transmitting the rotation torque of an input shaft to the output shaft and including a hydraulic element functionable as a reaction element therefor, a hydraulic positive displacement pump-motor drivingly connected with the input shaft for controlling the hydraulic element in accordance with the displacement ratio thereof, and a line circuit to provide hydraulic communication between the hydraulic element and the pump-motor. In the hydrostatic transmission, a drive power train selector gear unit is disposed between the input shaft and the speed differential means to selectively complete the forward and reverse drive power trains inbetween the input shaft and the output shaft by way of the speed differential means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.