Planetary differential assembly

Planetary gear transmission systems or components – Differential planetary gearing – Spur gear differential

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Details

475224, 475159, F16H 144

Patent

active

052097072

ABSTRACT:
A planetary differential assembly is disclosed. The planetary differential assembly can spit driving torque generated by an engine of a vehicle (which uses the assembly) into two parts at an appropriate ratio to realize an optimum driving condition of the vehicle in traveling even when one of driving wheels of the vehicle loses traction on a bad-condition road. The above appropriate splitting of the driving torque is accomplished by applying a braking torque to each of component gears of a planetary gear set of the assembly. Such braking torque is produced: by reducing at least one of backlashes between these component gears to a possible minimum amount; and/or by roughing an outer peripheral surface of each of pins on which the components gears are rotatably supported, respectively; and/or by roughing an inner peripheral surface of each of central through-holes of the component gears, through which surface each of the gears is brought into a slidable contact with each of the pins.

REFERENCES:
patent: 1474399 (1923-11-01), Bishop
patent: 2178613 (1939-11-01), Seeck
patent: 2550750 (1951-05-01), Abelt
patent: 2651215 (1953-09-01), Schoenrock
patent: 3343429 (1967-09-01), Frost
patent: 4041804 (1977-08-01), Clark
patent: 4084654 (1978-04-01), Dudek

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