Hypocycloidal reduction gearing

Details Hypocycloidal reduction gearing Hypocycloidal reduction gearing

1976-12-22

1978-06-27

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to rotary

74773, 74801, F16H 2114

Patent

active

040967638

ABSTRACT:
A gear reduction mechanism wherein a modification of the hypocycloidal principle is used. The planet gear of the hypocycloidal arrangement has at least one-half tooth more or less teeth than one-half the number of teeth on the ring gear. Either the ring gear or a pin reaction plate is permitted to rotate while the other is stationary. The reaction pins disposed on the planet gear travel in straight lines in slots formed in the reaction plate. When the reaction plate is stationary, the ring gear must rotate a very small amount during one complete rotation of the planet carrier to compensate for the tooth difference between the ring and planet gears. When the ring gear is held stationary, the reaction plate is forced to rotate to compensate for the tooth difference.

REFERENCES:
patent: 611779 (1898-10-01), Fefel
patent: 1172936 (1916-02-01), Burn

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