Chair base having double-tapered locking hub

Details Chair base having double-tapered locking hub Chair base having double-tapered locking hub

A - Human Necessities

47

C

A47C 4/02 (2006.01) A47C 3/30 (2006.01) A47C 7/00 (2006.01)

Patent

CA 2144507

The chair of the present invention has a dual-tapered locking hub. A first tapered portion is provided for a major portion of the internal core, and a second tapered potion is provided in the remainder of the internal core. The taper angle of the second is greater than the taper angle of the first portion. The first tapered portion prevents wobbling of the central column within the chair base after extensive use, whereas the second tapered portion prevents creeping of the central column through the chair base and locks in the central column.

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