Neutral shifting mechanism for hydrostatic transmission
US5042252A · kind A · utility
62Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Feb 22, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H39/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention is a neutral shifting mechanism for a hydrostatic transmission. A motor track ring has a groove and cam slot for receiving a control rod of the transmission, with the control rod having a cam portion for engaging the cam slot to lock the track ring in a position concentric with the pintle of the hydraulic motor, i.e. a neutral position. In the normal position, the cam portion positions the track ring eccentrically, allowing a speed control shaft to shift the hydrostatic transmission by pivoting the pump track ring about the control rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.