Multi-speed planetary differential
US4357840A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Nov 9, 1982 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2007
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A compact planetary differential (10) is provided including first and second planetary sets (16,18) individually having ring, sun, and carrier elements (26,28,30,34,36,38), a rotary input member (12), first and second output members (20,22) individually connected to a preselected first one of the elements of the respective planetary sets, and with preselected second ones of the elements of the respective planetary sets being connected for joint rotation. A multi-speed unit (14) desirably always drives the output members at equal torque levels while imparting multi-speed capability thereto. The multi-speed unit is driven by the input member and drives the remaining third one of the elements of the second planetary set in at least one speed. The multi-speed unit (14) preferably includes a third planetary set (44), one brake assembly (54) and a clutch assembly (102), or two brake assemblies (54,56) connected to preselected ones of the ring, sun, and/or carrier elements thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.