Automatic planetary transmission

Details Automatic planetary transmission Automatic planetary transmission

1982-03-15

1984-09-25

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74718, 74768, 74793, 74794, F16H 4704, F16H 5710

Patent

active

044729847

ABSTRACT:
A power transmission having axially aligned input and output shafts is provided with a planetary gear train for each shaft respectively with the carriers for the planetary pinions interconnected, with the pinions all meshing with a common ring gear, and with a gear reduction from the input gear train to the output gear train. Power is applied to the transmission through a torque convertor, and initial high torque-low speed operation changes gradually until a one-to-one ratio is established.

REFERENCES:
patent: 2336911 (1943-12-01), Zimmermann
patent: 2454694 (1948-11-01), Grebb
patent: 3204486 (1965-09-01), De Lalio
patent: 3511113 (1970-05-01), Rheault
patent: 3750493 (1973-08-01), Allsup, Sr.
patent: 4134310 (1979-01-01), Orshansky, Jr. et al.
patent: 4147075 (1979-04-01), Rasman et al.
patent: 4255987 (1981-03-01), Ciolli
New 3-Member Hydrodynamic Drive Unit, Qualman et al., Aug. 1961, pp. 91-93, SAE Journal.

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