Appeal No. 2000-1616
Application 08/698,054
engaging said column, said swivel joint comprising a singular
adjustment mechanism which controls the grip of said swivel
joint on said column and the resistance of said swivel joint
to rotation with respect to said frame, which occurs when said
column is deflected; and
said swivel joint further comprises a ball rotatably
mounted to a socket supported by said frame, said socket
comprising a concave spherical surface which matches the shape
of the surface area of said ball.
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