Splined sun gear and method for compact electro-mechanical...

Details Splined sun gear and method for compact electro-mechanical... Splined sun gear and method for compact electro-mechanical...

2007-03-27

2007-03-27

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S149000

Reexamination Certificate

active

11013647

ABSTRACT:
This invention relates to a sun gear member and sun gear shaft providing improved manufacturing time and material cost savings. This invention further relates to the packaging of a compact electro-mechanical transmission specifically as it pertains to the redesign of the planetary gear arrangement to compensate for the new design of the sun gear member and sun gear shaft. Several design modifications are disclosed in order to reduce the diameter of the planetary gear arrangement and its inclusive members. For example, the ring gear is chamfered to allow for additional clearance so that the planetary gear arrangement and the electronic motor package can be more compact when sun gear has separable sun gear members. In addition to packaging considerations, material costs, fatigue life requirements, and manufacturability of relevant transmission components were governing concerns in the redesign of the sun gear member and sun gear shaft.

REFERENCES:
patent: 5931757 (1999-08-01), Schmidt
patent: 6358173 (2002-03-01), Klemen et al.
patent: 6743135 (2004-06-01), Klemen et al.
patent: 7002267 (2006-02-01), Raszkowski et al.
patent: 2005/0209038 (2005-09-01), Kempf et al.
patent: 2005/0209040 (2005-09-01), Foster et al.

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