Anti-backlash planetary gearing for optic rotary joint

Details Anti-backlash planetary gearing for optic rotary joint Anti-backlash planetary gearing for optic rotary joint

2006-02-03

2009-02-03

Estremsky, Sherry L (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

Coaxial teeth around planet pinion engage axially spaced...

C475S347000

Reexamination Certificate

active

07485070

ABSTRACT:
The invention includes a precision planetary gear system which requires 2:1 gear ratio. The planetary gear system consists of three, or more planet gear assemblies. By adding a local degree of freedom, the planet gear assembly could be tilted relative to the carrier by a spring-loaded annular ring through a spherical feature thus force the three, or more planet gear assemblies symmetrically mesh into the sun gear and internal gear. A couple of elastomeric sleeves are introduced into the connection between the planet housing and the carrier so as to balance the load evenly among the three planet assemblies and to reduce the speed fluctuation of transmitted motion as well as the noise and vibration.

REFERENCES:
patent: 2759376 (1956-08-01), Chamberlin et al.
patent: 3245279 (1966-04-01), Baker
patent: 5442721 (1995-08-01), Ames
patent: 2003/0139250 (2003-07-01), Bowman
patent: 2005/0014594 (2005-01-01), Degen et al.

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