Planetary gear transmission systems or components – Differential planetary gearing – Planet pinion is worm gear
Patent
1991-01-22
1992-09-15
Lorence, Richard
Planetary gear transmission systems or components
Differential planetary gearing
Planet pinion is worm gear
475252, 475 85, 252 75, F16H 138
Patent
active
051472520
ABSTRACT:
A differential unit has axially aligned helically toothed output gears of different diameters to provide an unequal division of the input torque, in meshing relationship with two sets of intermediate gears which mesh together and are rotatable on axes parallel to the output gear axis. The gears of one set of intermediate gears mesh with concentric internally and externally toothed output gears to provide alternative outputs at different torque division rates. Slip within the unit can be opposed by frictional coating on the gears and/or on the housing by which they are carried and/or by a damping fluid which may be an electro-rheological fluid.
REFERENCES:
patent: 1859245 (1932-05-01), Remington
patent: 1869528 (1932-08-01), Trbojevich
patent: 2178613 (1939-11-01), Seeck
patent: 2462000 (1949-02-01), Randall
patent: 4389908 (1983-06-01), Dudek
patent: 4444298 (1984-04-01), Stangroom
patent: 4751853 (1988-06-01), Dissett
patent: 4802560 (1989-02-01), Bhadra et al.
patent: 4821603 (1989-04-01), Russell
Mace Graham H.
Thompson Andrew C.
Group Lotus P/C
Levi Benjamin
Lorence Richard
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