Center crank eccentrically oscillating speed reducer

Details Center crank eccentrically oscillating speed reducer Center crank eccentrically oscillating speed reducer

2006-08-22

2011-10-04

Young, Edwin A (Department: 3655)

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Reexamination Certificate

active

08029400

ABSTRACT:
The present invention provides a center crank eccentrically oscillating speed reducer enabled to increase the available cross-sectional area of a hollow hole, while the generation of large noises is suppressed, as compared with the conventional center crank eccentrically oscillating speed reducer. An eccentrically oscillating speed reducer (100) includes a case (110) configured to have internal teeth (111), a hollow crankshaft120configured to have an external gear123, external gears131and (131) have external teeth131aand132aa carrier140, and a transmission gear (160) configured to mesh with an input gear (150) and the external gear (123) and to transmit power transmitted from the input gear (150) to the external gear (123).

REFERENCES:
patent: 2003/0054912 (2003-03-01), Nohara et al.
patent: 2004/0192486 (2004-09-01), Tsurumi et al.
patent: 63-270946 (1988-11-01), None
patent: 7124883 (1995-05-01), None
patent: 2000-065162 (2000-03-01), None
patent: 2001-187945 (2001-07-01), None
patent: 2003-262256 (2003-09-01), None
patent: 2004-092739 (2004-03-01), None
EP Supplemental Search Report issued on Jun. 18, 2010 in EP Application No. 06782865.7.

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