Planetary gearing unit

Details Planetary gearing unit Planetary gearing unit

1996-02-20

1997-11-11

Marmor, Charles A.

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Orbit braked

475317, F16H 344

Patent

active

056857969

ABSTRACT:
This invention discloses an improved planetary gearing-unit. The device includes: an input shaft; a sun gear, tightly linked to the input shaft, rotatable as driven by the input shaft; several planet gears, engaged with the sun gear; a fixed ring gear, encircling the circumference of the planet gears and engaged with the various planet gears; a planet gear carrier, being rotatable driven by the planet gears' revolving motion; an output shaft; a gearshift device, allowing the output shaft to be connected either to the input shaft or to the planet gear carrier, optionally, and to correspondingly rotate either along with the input shaft or with the planet gear carrier, so as to allow for switching into high or low gear. In this device assembly, both in high and in low gear the ring gear is fixed in the planetary gearing box without motion, thus not developing the stirring of oil and overcoming the problem of temperature rise and mechanical deformation, furthermore reducing the waste of energy.

REFERENCES:
patent: 2971406 (1961-02-01), Senkowski et al.
patent: 4063470 (1977-12-01), Kelbel
patent: 4074591 (1978-02-01), Dick
patent: 4569252 (1986-02-01), Harper
patent: 4791833 (1988-12-01), Sakai et al.
patent: 4920828 (1990-05-01), Kameda et al.
patent: 5209708 (1993-05-01), Igaku

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