Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1983-11-03
1985-09-10
Herrmann, Allan D.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74689, 74701, F16H 3706
Patent
active
045398666
ABSTRACT:
A continuously variable transmission with wide ratio coverage has a variable ratio belt drive in series with a fixed ratio drive which is selectively connectible between the input and output shafts. A pair of selectively engageable clutches cooperate with the belt drive to provide two continuously variable speed ratio ranges. A transition clutch maintains power flow between the input and output shafts during shifting from one range to the other. The belt drive is controlled between the maximum and minimum drive ratios in each speed range. The belt ratio is held constant while the transition clutch is engaged.
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General Motors Corporation
Herrmann Allan D.
Rolnicki Joseph M.
Scherer Donald F.
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