Power transfer device for four-wheel drive vehicle
US4618022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1986 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Jan 14, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2048/305
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transfer device for a four-wheel drive vehicle comprises a first differential including a differential case arranged to be applied with drive torque from a transmission, a pinion gear rotatably mounted within the differential case, and a pair of side gears rotatably mounted within the differential case and in mesh with the pinion gear; a pair of output shafts connected to the side gears respectively for driving the front and rear road wheels; a second differential including a differential carrier formed to contain the differential case therein, a carrier rotatably mounted within the differential carrier and connected with the differential case for rotation therewith about a common axis, a sun gear integral with one of the side gears, a planetary gear rotatably supported by the carrier and in mesh with the sun gear, a ring gear integral with the inner wall of the differential carrier and in mesh with the planetary gear, the carrier being drivingly connected to an output shaft of the transmission; and a selector mechanism arranged to drivingly connect one of the output shafts or the differential carrier to the front or rear road wheels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.