Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1978-02-01
1980-03-11
Chandler, Lance
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
743375, 74793, 74752A, B60K 4118, F16H 506, F16H 374
Patent
active
041922034
ABSTRACT:
A constant meshed, infinitely variable gear ratio transmission using relatively low pressure, low volume hydraulic systems to control the transmission gear ratio. The transmission includes a gear box having an input and output shaft. The gear box houses two sets of planetary gears which couple the input and output shafts together. A pinion gear is fixed to each shaft. A set of planetary gears mesh with each pinion and a plurality of planetary gear shafts connect the corresponding planetary gears of each pinion together. A cage is rotatably supported in the housing. A first hydraulic system controls the rotation of the cage. A second and independent hydraulic system controls the rotation of the planetary gear shafts by selectably controlling the rotation of the cage and the rotation of the planetary gear shafts so that the gear ratio for the transmission may be intermediately selected.
REFERENCES:
patent: 1299629 (1919-04-01), Snider
patent: 1370047 (1921-03-01), Rogers
patent: 1804055 (1931-05-01), Herrmann
patent: 2292079 (1942-08-01), Joyce
patent: 2384996 (1945-09-01), Hanson
patent: 2624215 (1953-01-01), McRae
patent: 3008341 (1961-11-01), Cobb
patent: 3121483 (1964-02-01), Lietz
patent: 3240083 (1966-03-01), Stoddard
patent: 3876342 (1975-04-01), Dailey
patent: 4023442 (1977-05-01), Woods et al.
patent: 4080847 (1978-03-01), Thomas
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