Planetary transmission
US4420992A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1981 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Jul 7, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary transmission (10) is disclosed including a front section (48) having a rotating housing (52) and a planetary gear set (18) with a ring gear (62), a sun gear (64) and a planet carrier (66). Advantageously, the ring gear (62) is the input and the rotating housing (52) is the output, and the sun gear (64) is continually held stationary. A first clutch assembly (32) connects the planet carrier (66) to the rotating housing (52) and provides underdrive and a second clutch assembly (34) connects the ring gear to the rotating housing (52) and provides direct drive. The front section (48) is operatively connected to a rear section (50) for multi-speed use especially adaptable to an agricultural vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.