Planetary gear transmission systems or components – Planet pinion is friction gear – Variable speed ratio
Reexamination Certificate
2011-08-23
2011-08-23
Lewis, Tisha D (Department: 3655)
Planetary gear transmission systems or components
Planet pinion is friction gear
Variable speed ratio
C475S193000, C475S195000, C475S194000, C475S197000
Reexamination Certificate
active
08002661
ABSTRACT:
A continuously variable transmission includes an input shaft rotatably supported in a housing; a first speed change unit and a second speed change unit, provided within the housing and disposed facing each other symmetrically with respect to a plane normal to the axial direction of the input shaft, to continuously vary the speed of rotation of the input shaft using traction force; an output rotating gear supported to be able to rotate freely about the input shaft so that the rotation of the output rotating gear is synchronized with the rotation which has been varied in speed by the first speed change unit and the second speed change unit; and an output shaft. The torque of the input shaft can be doubled by the two speed change units while continuously varying the speed, and the thrust loads generated in the axial direction of the input shaft cancel each other out.
REFERENCES:
patent: 2929273 (1960-03-01), Weber
patent: 3293947 (1966-12-01), Chery
patent: 3516305 (1970-06-01), Chery
patent: 7166056 (2007-01-01), Miller et al.
patent: 7575530 (2009-08-01), Sekiya
patent: 6-280961 (1994-10-01), None
patent: 11-210776 (1999-08-01), None
International Search Report for PCT/JP2007/066857, mailed Dec. 11, 2007.
International Search Report issued Apr. 2, 2009 in corresponding International Patent Application PCT/JP2007/066857.
Lewis Tisha D
Mikuni Corporation
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