Power transmission lubrication system
US7300377B2 · kind B2 · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jan 27, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary transmission includes a plurality of planetary gearsets. The planetary gearsets have a lubrication system comprised of pinion pins secured in side plates and central passages located within the pinion pins. The central passages or cavities have radially outwardly disposed fluid passages, which supply fluid lubrication to support bearings for the pinion pins of the respective planetary gearsets. Lubrication fluid is communicated into the cavities when thrust loads are imposed on the planetary gearsets and the thrust bearings disposed between adjacent planetary gearsets reduces the flow area for the lubrication fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.