Abstract
Reporters obtained the following quote from the background information supplied by the inventors:“An eccentrically swinging type gear device of which a planetary gear swings eccentrically while internallymeshes with an internally toothed gear may include an eccentric body is integrally formed with an inputshaft, and the planetary gear may be mounted in the eccentric body via an eccentric body bearing. Externalteeth with an arc tooth shape or the like may be formed on periphery of the planetary gear.
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