Reduction gear transmission

Details Reduction gear transmission Reduction gear transmission

2007-09-26

2011-11-01

Wright, Dirk (Department: 3655)

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Circumferentially spaced connector pins

Reexamination Certificate

active

08047943

ABSTRACT:
A reduction gear transmission, a kind of eccentrically-oscillating-type reduction gear transmission, is provided with an internal gear, an external gear, a carrier, a crank member and a bearing mechanism. The external gear comprises a through hole at a position offset from its central axis. The carrier comprises a support shaft that extends into the through hole of the external gear. The crank member comprises a though hole into which the support shaft extends and an eccentric member that engages inside the through hole of the external gear. The central axis of the eccentric member is offset from a central axis of the support shaft. The bearing is disposed between the support shaft and the crank member, and supports the crank member such that the crank member is capable of rotating with respect to the central axis of the support shaft. In this reduction gear transmission, a clearance that extends along the support shaft between the carrier and the inner ring is narrower than a clearance between the carrier and an end face of the crank member.

REFERENCES:
patent: U-59-3048 (1984-01-01), None
patent: U-62-24157 (1987-02-01), None
patent: A-63-243547 (1988-10-01), None
patent: U-4-48450 (1992-04-01), None
patent: A-9-57678 (1997-03-01), None
patent: A-2006-22829 (2006-01-01), None
Chinese Office Action dated Sep. 21, 2010 in corresponding Chinese Patent Application No. 200780035728.6 (with translation).
Supplementary European Search Report for corresponding European Patent Application No. 07828462.7, mailed on Jan. 26, 2011.

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