Epicycloidal gears and gear tooth arrangement therefor
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United States of America Patent
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May 8, 1984
Grant Date -
N/A
app pub date -
Apr 23, 1981
filing date -
Apr 23, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to gears and gear trains, and more particularly to epicyclic gear trains of low cost and improved efficiency, and to gear teeth for use therewith. A novel driving means in the form of an eccentric crank/counterweight is provided, and the structural relationships between the several gears are such that the need for conventional bearings is completely obviated. The gear train is of modular construction, being split diametrically into matched halves. Thus, the gear ratio of the overall gear box may be quickly and easily varied by merely replacing one of the matched halves with another. The novel tooth construction for use with such epicyclic gearing employs a large pressure angle which allows circular arc profile involute teeth to be utilized.
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