Swivel-chair frame

Details Swivel-chair frame Swivel-chair frame

1978-02-27

1980-11-25

Mitchell, James C.

Supports

Resilient support

Torsion bar or bushing

297302, 297306, A45D 1904, A47J 4716

Patent

active

042354080

ABSTRACT:
A swinging-seat swivel chair includes a vertical stud that carries a horizontal hollow pin at the end of which are pivoted two supporting arms for a seat. A torsion bar is housed in the interior of the pin with one end coupled to the pin and the other end coupled to the arm at the other end of the torsion bar. A rigid longitudinal member is included substantially parallel to and spaced from the pin and rigidly interconnecting the arms.

REFERENCES:
patent: 3027191 (1962-03-01), Lie
patent: 3131904 (1964-05-01), Lie
patent: 3162420 (1964-12-01), Lie
patent: 3240528 (1966-03-01), Ciuffini et al.
patent: 3480249 (1969-11-01), Lie
patent: 3669399 (1972-06-01), Wager
patent: 3868144 (1975-02-01), Lie

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