Patent ID: 8182036

Claim:
A rocking chair comprising: a seat; a projecting member provided on the lower side of the seat and having a convex surface forming a part of a spherical surface centered on a point located above the seat; a guide member in contact with the convex surface of the projecting member for guiding the projecting member so as to enable the projecting member to rock along the spherical surface, and a support member installed with the guide member for supporting the seat through the guide member and the projecting member, the guide member comprising swivel casters, each of the swivel casters having a roller in contact with the convex surface of the projecting member, a yoke rotatably connecting the roller, and a swivel shaft fixed to the support member and rotatably connecting the yoke, each of the swivel shafts having a central axis passing through the center of the spherical surface.