Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1981-04-01
1984-01-03
Staab, Lawrence J.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74714, 74762, 74674, 74665GA, F16H 138
Patent
active
044236441
ABSTRACT:
A multi-speed planetary differential (10) for a vehicle or the like is disclosed which has first and second interconnected planetary gear sets (12,14) with first and second output members (18,20) individually connected to first ones of the elements (26,28,30,34,36,38) of the respective planetary gear sets (12,14). Second ones of the elements (26,28,30,34,36,38) of the planetary gear sets (12,14) are interconnected, and the remaining third one of the elements (34,36,38) of the second planetary gear set (14) is held stationary. Advantageously, planetary means (22) are provided for driving an input member (16) connected to the remaining third one of the elements (26,28,30) of the first planetary gear set (12) at either of two speeds. The planetary means (22) includes a third planetary gear set (46) compactly disposed on a common axis (24) with the first and second planetary gear sets (12,14), and the differential (10) continually drives the output members (18,20) at equal torque levels in each speed.
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Caterpillar Tractor Co.
Lanchantin, Jr. Charles E.
Rolnicki Joseph M.
Staab Lawrence J.
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