Patent ID: 9060609
Filing Date: 2015-06-23
Classification: A47B,A47C,F16M

Abstract:
1. A base assembly for supporting a chair, the chair including a seat and a mounting assembly mounted to an underside of the seat, the base assembly comprising: (i) a pan member having a top surface, a bottom surface, an outer edge, a central portion and a peripheral portion that surrounds the central portion and that is adjacent the outer edge, the outer edge forming a shape of the pan member, the top surface concave upward with the peripheral portion at a height above a height of the central portion, the pan member forming a plurality of openings that are spaced about the peripheral portion, each opening located at a height above the bottom surface of the central portion; (ii) a bottom ring forming a loop having a shape that is substantially similar to the shape of the pan member and having an undersurface, a plurality of pintle mounts extending downward from the undersurface of the bottom ring, the bottom ring mounted to the top surface of the pan member with the bottom ring contacting the peripheral portion of the pan member and each pintle mount extending through one of the openings formed in the pan member; (iii) a central hub forming a substantially flat top surface and forming an opening in the top surface for receiving a lower portion of the mounting assembly; (iv) a plurality of leg members that extend upward and inward from spaced apart locations of the bottom ring to the central hub spaced from and to support the central hub above the central portion of the pan member; and (v) a plurality of casters, a separate caster mounted to each of the pintle mounts.