Planetary gear device including planetary gears each having integrally formed large and small pinions
US5533943A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 6, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Apr 6, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2400/73
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary gear device including a first gear, a second gear, a carrier, and composite planetary gears each having a large- and a small-diameter pinion that are formed integrally with each other and arranged in the axial direction. The composite planetary gears are mounted rotatably on respective pinion shafts such that the composite planetary gears are axially movable over predetermined distances due to axial plays, and the pinion shafts are supported by the carrier such that the pinion shafts are disposed around an axis of the carrier. The pinions of the composite planetary gears mesh with the first and second gears, respectively. Each of the first and second gears and the pinions consists of a helical gear whose teeth have a helix angle with respect to the axis. The large-diameter and small-diameter pinions have the same direction of helix and the same amount of lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.