Reduction gear with increased number of meshed teeth

Details Reduction gear with increased number of meshed teeth Reduction gear with increased number of meshed teeth

2007-07-10

2009-12-29

Lewis, Tisha D (Department: 3655)

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Means to change speed ratio between input and output

C475S176000, C475S178000

Reexamination Certificate

active

07637835

ABSTRACT:
A reduction gear includes a case including a hollow cylinder having teeth on its inner wall; a ring gear having outer teeth meshed with the teeth of the cylinder, and inner teeth; and an eccentric gear assembly mounted in the cylinder and including a hollow eccentric shaft including rear and front eccentric sections, and first and second gears rotatably secured onto the rear and front eccentric sections respectively. Rotating an input shaft in a first speed will rotate the eccentric shaft to rotate the first and second gears around the inner teeth of the ring gear eccentrically, thereby rotating the output shaft in a second speed lower than the first speed. The invention has an increased number of meshed teeth between each of the first and second gears and the ring gear so as to distribute a radial load to more teeth in rotation.

REFERENCES:
patent: 3037400 (1962-06-01), Sundt
patent: 4155276 (1979-05-01), Fengler
patent: 4452102 (1984-06-01), Shaffer

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