Planetary gear drive

Details Planetary gear drive Planetary gear drive

2006-06-13

2006-06-13

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

Floating or flexible coupling or support

C475S317000, C475S331000, C475S346000

Reexamination Certificate

active

07059996

ABSTRACT:
A planetary gear drive includes a thin, elastically resilient internal gear arranged within an annular housing, in which there is also a carrier that is rotatably supported by a pair of tapered roller bearings. A sun gear located concentrically within a cylindrical portion of the carrier is arranged so that the sun gear is capable of floating movement perpendicular to the drive axis. Any uneven meshing caused by error in the assembly or manufacture of the gears is automatically cancelled by radial elastic deformation of the internal gear and the floating movement of the sun gear, reducing backlash. Moreover, the use of two tapered roller bearings makes it possible to increase the moment capacity of the planetary gear drive.

REFERENCES:
patent: 5879261 (1999-03-01), Bayer
patent: 6290625 (2001-09-01), Shirokoshi
patent: 6719658 (2004-04-01), Haga et al.
patent: 08061438 (1996-03-01), None
patent: 2000-179629 (2000-06-01), None

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