Pancake planetary drive

Details Pancake planetary drive Pancake planetary drive

1979-01-02

1981-08-11

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74465, 418 61B, F16H 128, F04C 18113

Patent

active

042827779

ABSTRACT:
A improved planetary drive employs a pair of radially inner and outer nonorbiting members between which is radially disposed an annular orbiting member. The inner nonorbiting member and the inner surface of the inner wall of the orbiting member are formed with opposing surface in meshing engagement to form one stage of a planetary drive, while the opposing surfaces of the outer nonorbiting member and the orbiting member are formed with teeth in meshing engagement to form a second stage of a planetary drive. All of the orbiting and nonorbiting members and their teeth lie in the same plane or planes disposed radially outward from the means for orbiting the orbiting member so that when that member is orbited, the forces exerted on the orbiting means are in said plane or planes. Various combinations of rollers and lobed surfaces to formed the gear stages are also described.

REFERENCES:
patent: Re24288 (1954-07-01), Nanni
patent: 3037400 (1962-06-01), Sundt
patent: 3073184 (1963-01-01), Braren
patent: 3192799 (1965-07-01), Pamplin
patent: 3846051 (1974-11-01), McDermott
patent: 3979167 (1976-09-01), Grove
patent: 3985047 (1976-10-01), Therkelsen
patent: 4023411 (1977-05-01), Osterwalder

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