Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1975-12-24
1977-07-12
Coan, James F.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74752C, F16H 358
Patent
active
040346250
ABSTRACT:
A manually controlled semi-automatic, multiple-step, internal gear driven transmission characterized by a hydraulic activation system of compensating fluid pressure versus spring compression resistance forces including a forward section having an integrated dual clutch and pinion carrier, driven by an engine shaft, a gear-type oil pump driven by helical gears supplying the servo-system, a rear section pinion carrier, related die cast pinion gear clusters, annulus gears and an interconnecting middle section dual-annulus gear. The gear ratio changes are effected by annulus fluid-combination spring power cylinder brake control and fluid actuated clutches capable of causing the transmission of torque to a load shaft directly through a main shaft, through the rear pinion carrier or through the dual annulus, whereby the least reduction is obtained when all elements are in operation. The invention is further characterized by a variable pressure regulator, governing actuating fluid pressure at idling speeds, and a differential-piston pressure regulator, governing main line fluid pressure at all speeds, to a directory rotary distributor valve feeding said power cylinders and clutches as directed by a manual straight line shifting arrangement, said regulators having a compensating fluid pressure versus spring compression design.
REFERENCES:
patent: 1660997 (1928-02-01), Kearby
patent: 2620685 (1952-12-01), Smirl
patent: 2756600 (1956-07-01), Kamlukin et al.
patent: 2871726 (1959-02-01), Kamlukin
patent: 3160030 (1964-12-01), Wickman
patent: 3971268 (1976-07-01), Murakami et al.
Cannon James J.
Cannon, Jr. James J.
Coan James F.
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