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US 4,472,984 AGranted
Automatic planetary transmission
OwnerEstle A. Cookinventor
Life of this patent
Estimating the term…
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.
Claims8
In a transmission,
- a gear box;
- an input and opposed output shaft extending into the box;
- a first planetary gear train in said box having a first sun gear secured to the input shaft, a first series of equal diameter, planetary pinions in mesh with and surrounding the first sun gear, and a first carrier rotatably supporting the first series of pinions and the input shaft;
- a secondary planetary gear train in said box having a second sun gear secured to the output shaft, a second series of equal diameter, planetary pinions in mesh with and surrounding the second sun gear, and a second carrier rotatably supporting the second series of pinions and the output shaft;
- means in the box interconnecting the carriers,
- said box having means rotatably supporting the carriers;
- a ring gear in the box common to the trains, surrounding the pinions and in mesh with the latter,
- said box having means rotatably supporting the ring gear,
- said shafts having proximal ends;
- a support in the box between said trains rotatably receiving the proximal ends of said shafts for holding the same axially aligned;
- and
- a number of spacers integral with said support, spaced radially outwardly of said shafts between the carriers for holding the latter in parallelism.
9 more elements
Dependencies are inferred from the claim text.