Patent ID: 6179469
Filing Date: 2001-01-30
Classification: F01D

Abstract:
A rotation mechanism for rotating an annular rotation ring, comprising:a pair of follower links, each of which is connected at one end to the periphery of said rotation ring in such a way that said follower links are free to rotate;a pair of drive links, each of which is free to rotate at both ends;an operating lever which rotates on an operating shaft; anda drive lever rotatably mounted at a central portion thereof by an operating pin to an end of said operating lever; ends of said drive lever being connected by pins to respective other ends of said pair of drive links, and said operating lever being connected to said drive links in such a way that, when said operating lever is rotated, the rotation force is transmitted via said drive lever and said pair of drive links to said pair of follower links, which move simultaneously to exert a coupled force to rotate said rotation ring.