Epicyclic drive with unified planet assemblies
US6770007B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/085
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An epicyclic drive has its planet gears integrated into separately built planet assemblies. Each planet assembly, in addition to its planet gear, includes a pin which extends through the planet gear and an antifriction bearing located between the gear and the pin. The outer raceways for the bearing are machined into the gear, whereas the inner raceways are machined into the pin. The bearing also has rolling elements organized in two rows between the inner and outer raceways. The pins have mounting ends which lie beyond the ends of the planet gear to anchor the planet assembly in a carrier. The planet gear and the pin define lubrication channels adjacent each raceway, permitting a flow of lubricating oil to the rolling elements. The bearing, inasmuch as it is assembled separately, is set with considerable precision, preferably in preload, so the planet gear does not skew with respect to sun and ring gears with which it meshes during operation at the epicyclic drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.