Worm gear differential

Details Worm gear differential Worm gear differential

2008-01-15

2008-01-15

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

Differential planetary gearing

Planet pinion is worm gear

Reexamination Certificate

active

07318785

ABSTRACT:
A differential includes a carrier and worm gear assembly that cooperate to provide speed differentiation between first and second output shafts as needed. The carrier is coupled to an axle input gear, such as a ring gear for example, or a transmission shaft. The worm gear assembly includes a first enveloping worm gear that drives the first output shaft and a second enveloping worm gear that drives the second output shaft. First and second gears are supported by the carrier and are each in meshing engagement with the first and second enveloping worm gears in a self-locking arrangement. When the first and second enveloping worm gears rotate they are able to turn the first and second gears during normal road conditions, however, the first and second gears cannot drive or turn the first and second enveloping worm gears during a low traction driving condition.

REFERENCES:
patent: 1259279 (1918-03-01), Patch
patent: 1407703 (1922-02-01), Moir

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