Bicoupled contrarotating epicyclic gears

Details Bicoupled contrarotating epicyclic gears Bicoupled contrarotating epicyclic gears

1995-09-14

1997-10-21

Marmor, Charles A.

Planetary gear transmission systems or components

Planetary gearing or element

Plural outputs

475330, 475337, 475347, 74411, F16H 3706

Patent

active

056790899

ABSTRACT:
A compact bicoupled contrarotating epicyclic gear is provided. The gear iudes a rotatable input shaft for providing an input-torque, a first-stage epicyclic gear, a second-stage epicyclic gear mutually drivably coupled to and in axial alignment with the first epicyclic gear, an outer-output shaft for conveying an outer-output-torque in response to the input-torque, and an inner-output shaft coaxial with the outer-output shaft for conveying an inner-output-torque in response to the input-torque. The bicoupled contrarotating epicyclic gear further includes at least one interstage torque carrier rotatably connecting the first and second epicyclic gears in series such that the first and second sun gears, the first and second planet carriers, and the first and second ring gears rotate and convey useful torque in response to the input-torque. The outer-output shaft is connected to the second-stage ring gear for rotating therewith in a first direction, and the inner-output shaft is torsionally coupled with the second-stage planet carrier for rotating therewith in a second direction, the second direction being opposite the first direction.

REFERENCES:
patent: 2186064 (1940-01-01), Dekker
patent: 2247839 (1941-07-01), Halford et al.
patent: 2401365 (1946-06-01), Mercier
patent: 2522443 (1950-09-01), Gaubatz et al.
patent: 2700311 (1955-01-01), Bade
patent: 3195324 (1965-07-01), Sellwood et al.
patent: 3757608 (1973-09-01), Willner
patent: 4121476 (1978-10-01), Hammond
patent: 5083989 (1992-01-01), Yates et al.

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