Hydromechanical load-splitting drive
US4259881A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1978 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Dec 15, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/088
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydromechanical drive comprises an input shaft connected to the input side of a hydrostatic transmission having an output side and comprising a pair of hydraulically interconnected hydraulic machines one of which is of variable volume to vary the transmission ratios between its input and output sides. A cam-type summing transmission has one input element connected to the output side of the hydrostatic transmission, another input element connected to the input shaft of the drive, and an output element connected to the output shaft of the drive. A brake is connected to the output side of the hydrostatic transmission for retarding same and thereby reducing the load on the hydrostatic transmission. This brake may be of the torque-converter type that applies increasing resistance to rotation as rotation speed increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.