Vehicular hydro-mechanical transmission system with speed range shift
US4738160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Jun 17, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2047/045
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydro-mechanical power transmission for vehicles wherein optional two of the three elements of a planetary gearing serve as an input portion and an output portion, and the other element is driven at a steplessly variable speed by a static hydraulic speed change device which is operable by the input portion or the output portion. A change-over device is provided in a power transmission system for the speed change device to drive the other element in different speed ranges by switching the change-over device. For running on the road, the speed is widely variable from low to high, while for working, the running speed is finely adjustable within one of the speed ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.