Apparatus and method to achieve multiple effective ratios...

Details Apparatus and method to achieve multiple effective ratios... Apparatus and method to achieve multiple effective ratios...

2005-01-18

2005-01-18

Marmor, Charles A. (Department: 3681)

Planetary gear transmission systems or components

Differential planetary gearing

Including means to selectively apply rotational power to...

C475S223000, C475S005000, C180S248000, C180S244000

Reexamination Certificate

active

06843749

ABSTRACT:
A motor vehicle drive train assembly for achieving multiple effective ratios from a single ratio transaxle enables application of a fixed ratio transaxle, such as used in electric vehicle drive trains, to a multi-speed requirement, for example, in airport ground support equipment. Multiple configurations are enabled by varying the relative speed of the outputs through the differential of the transaxle, such as bringing one of the outputs to zero, or by using another motor to control the speed of one of the outputs.

REFERENCES:
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patent: 5407024 (1995-04-01), Watson et al.
patent: 5441136 (1995-08-01), Greaves et al.
patent: 6371878 (2002-04-01), Bowen
patent: 6634976 (2003-10-01), Britt
patent: 20020045507 (2002-04-01), Bowen

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