| 主权项 |
1. An apparatus for producing an orbital movement in a plane, the apparatus comprising:
a lower shaft and an upper shaft , being parallelly and eccentrically attached to one another; a platform, rotatably mounted on the upper shaft; a ring gear, attached to the platform and coaxially rotatable about the upper shaft, the ring gear comprising a plurality of interior teeth on a radially inward circumferential surface; and a gear wheel, having a plurality of exterior teeth on a peripheral circumferential surface, being coaxially rotatably mounted on the lower shaft; wherein the gear wheel is so placed within the ring gear that at least some of the plurality of interior teeth engage with at least some of the plurality of exterior teeth. |
