Transmission assembly
US8984871B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Oct 13, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D31/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive device having a pump and motor is disclosed, where the pump swash plate includes a pair of structural ribs and the housing has a pair of thrust ribs on an inner surface. Only one thrust rib is in contact with one of the structural ribs at a time, to permit arcuate rotation of the swash plate while limiting axial movement of the swash plate. The axes of rotation of the swash plate trunnion, input shaft and output shaft are in a common plane. A rotary bypass shaft for engaging transmission check plugs includes an external bypass arm. A pair of detents are externally formed on the housing, and the bypass arm includes separate pairs of openings to engage the pair of detents when the bypass arm is in different positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.