Manufacture and use of parallel eccentric electro-mechanical...

Details Manufacture and use of parallel eccentric electro-mechanical... Manufacture and use of parallel eccentric electro-mechanical...

2008-02-18

2011-10-11

Ho, Ha D. (Department: 3655)

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Wabbler transmission

C475S177000, C475S179000

Reexamination Certificate

active

08033942

ABSTRACT:
A parallel eccentric electro-mechanical actuator provides motive power and includes an electric prime mover that drives the reducer's pinion gear. This pinion drives minimum three star gears with stationary shaft bearings. Each shaft contains an eccentric which are completely in parallel with each other. These eccentrics can be thought of as parallel/in-phase driven crankshafts. Each eccentric drives the parallel eccentric (PE) gear through a bearing. The PE gear exhibits a circular motion (without rotation) which in itself is unbalanced. The crankshafts have another eccentric which create an opposite inertia force to balance that of the PE gear. The PE gear contains an external toothed gear on its periphery. It meshes with the internal teeth of the output ring gear. The relative motion between the PE gear and the ring gear is that the PE gear rolls inside the ring gear. This relative motion is called hypo-cycloidal motion.

REFERENCES:
patent: 3402621 (1968-09-01), Johnson et al.
patent: 4563908 (1986-01-01), Shube
patent: 4669403 (1987-06-01), Bagnall
patent: 7534184 (2009-05-01), Tsurumi
patent: 7553249 (2009-06-01), Nohara
patent: 7604559 (2009-10-01), Fujimoto et al.
patent: 7641579 (2010-01-01), Junkers

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