Hydro mechanical transmission planetary carrier support system
US6533694B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Dec 17, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/0886
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a hydro-mechanical transmission having a hydrostatic unit and a mechanical gear train, the hydrostatic unit is resiliently mounted in the transmission housing to reduce the transmission of noise and vibration to the housing. Movement of the hydrostatic unit is facilitated by mounting the planetary carrier on a ball bearing instead of taper roller bearings. The ball bearing allows the carrier limited movement transverse to the axis of rotation of the carrier. To further reduce wear of the gear faces, one or more of the meshing gears at the point of relative movement have crowned gear faces rather than straight gear faces. This avoids a single line of contact of the meshing teeth at the tooth edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.