Epicyclic transmission

Details Epicyclic transmission Epicyclic transmission

1982-03-03

1984-09-04

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74191, 74192, 74216, F16H 1550, F16H 1516, F16H 5534

Patent

active

044689845

ABSTRACT:
An epicyclic transmission with steplessly-variable speed control includes a set of three planet wheels (46) which are in the form of tapered rollers of dual conicity and are supported for rotation by a planet carrier (34) driven by a drive shaft (28). The tapered planet wheels have a larger frusto-conical portion (48) in rolling contact with a governing annulus (58) which is locked for rotation and is displaceable axially, and a smaller frusto-conical portion (50) associated with a driven annulus (92) which rotates a driven shaft (102). The tapered planet wheels also have two axially-spaced bearing surfaces (52,54) in rolling contact with two corresponding bearing surfaces (136,138) of a freely-rotatable sun wheel in the form of a sleeve (122) coaxial with the drive shaft (FIG. 1).

REFERENCES:
patent: 2209023 (1940-07-01), Jett
patent: 2328536 (1943-09-01), Bade
patent: 2342071 (1944-02-01), Bade
patent: 2343840 (1944-03-01), Bade
patent: 2642749 (1953-05-01), Wood
patent: 3357277 (1967-12-01), Alsch
patent: 3677109 (1972-07-01), Stuemky
patent: 4233851 (1980-11-01), Kemper
patent: 4282774 (1981-08-01), van der Lely
patent: 4378708 (1983-04-01), Pouliot

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