Rocking chair apparatus

Details Rocking chair apparatus Rocking chair apparatus

1989-10-23

1990-12-04

Chen, Jose V.

Chairs and seats

Rocker-mounted

297264, A47C 302

Patent

active

049749048

ABSTRACT:
A hemisphere with an integral outer flange is attached to the flat bottom surface of a chair. A cone shaped base depends from the convex bottom of the hemisphere and is separated from the hemisphere by an annular member having a multiplicity of roller bearings seated on its top surface and in contact with the convex surface of the hemisphere. The cone base has a flat bottom plate connected to the first end of a turn-buckle. A second end of the turn-buckle is connected to a spring connected in turn to the hemisphere. An increase or decrease in the tension exerted on the the spring controls the degree of rocking of the chair.

REFERENCES:
patent: 648916 (1900-05-01), Bowers
patent: 718394 (1903-01-01), Siegrist
patent: 1279229 (1918-09-01), Bilan
patent: 2689599 (1954-09-01), Mauser
patent: 2964094 (1960-12-01), Gariepy
patent: 3333811 (1967-08-01), Matthews
patent: 3374981 (1968-03-01), Stuckenberger et al.
patent: 3659895 (1972-05-01), Dresden
patent: 4598946 (1986-07-01), Cone
patent: 4736984 (1988-04-01), Tacker
patent: 4768829 (1988-09-01), Goldman

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