Transmission

Endless belt power transmission systems or components – Plural belts or plural output loads

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Details

474 88, F16H 702, F16H 924

Patent

active

046610863

ABSTRACT:
A transmission particularly adapted for use in ultralight aircraft, air boats, home built aircraft or the like has a transmission case within which four gears are contained to provide the requisite speed reduction. A torque input gear is coaxially mounted with an output gear so that the transmission torque input shaft is in axial alignment with the transmission output shaft. A pair of intermediate speed reduction gears are laterally offset from the input and output gears and are mounted on a common jackshaft. One of the intermediate gears is belt driven by the input gear and the other intermediate gear belt drives the output gear to provide the requisite speed reduction. The gears and drive belts are toothed. The use of toothed drive belts and gears provide for positive drive of the transmission components. There is no direct physical contact between the input gear and the intermediate gears or between the intermediate gears and the output gear, so as to provide physical isolation between the input and output gears. The coaxial mounting of the input and output gears and the isolation of the intermediate gears from direct contact with the input and output gears by the drivebelts, which are slightly elastic, provides for the required structural strength and rigidity for transmission of torque effect forces from the propeller through the transmission to the engine and the airframe without excessive structural weight of the transmission otherwise required to provide the necessary component strength.

REFERENCES:
patent: 3059493 (1962-10-01), Wolfram
patent: 3148556 (1964-09-01), Gibbs et al.
patent: 3529483 (1970-09-01), Warnock
patent: 3813956 (1974-06-01), Whitecar

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