Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1984-11-05
1986-09-30
Dorner, Kenneth J.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74687, F16H 3706, F16H 4704
Patent
active
046141316
ABSTRACT:
A cross drive transmission has planetary differential gear units at opposite ends on the output center line of the transmission each having a ring gear output member connected to corresponding ones of the transmission output shafts, a planet carrier drive input member connected to a range gearing section of the transmission on the output center line thereof, and a sun gear reaction member. A hydrostatic pump powers a hydrostatic motor, each on the output center line, which is drive connected to a steer transfer sun gear. The steer transfer sun gear meshes with primary pinions on fixed axes and the primary pinions mesh with secondary pinions on fixed axes. Primary and secondary ring gears concentric with the output center line mesh with the primary and secondary pinion gears and are, therefore, rotatable in opposite directions at the same speed. First and second steer cross shafts on the output center line are drive connected to the primary and secondary ring gears and to respective ones of the reaction member sun gears to provide differential steering.
REFERENCES:
patent: 3253688 (1966-05-01), Livezey
patent: 3274946 (1966-09-01), Simmons
patent: 3303723 (1967-02-01), Ruf
patent: 3378119 (1968-04-01), Schaefer
patent: 3383953 (1968-05-01), Christenson
patent: 3425296 (1969-02-01), Livezey
patent: 3869939 (1975-03-01), Miyao et al.
patent: 4286478 (1981-09-01), Kessinger, Jr.
Dorner Kenneth J.
General Motors Corporation
Schwartz Saul
Wright Dirk
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