Twin caster with a biased sustaining element

Details Twin caster with a biased sustaining element Twin caster with a biased sustaining element

1993-03-11

1993-11-09

Sipos, John

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

Wheels

16 44, 16 33, A47B 9100, B60B 3300

Patent

active

052590887

ABSTRACT:
An improved chair caster comprises a main body, an upright tube, an elastic element, and a sustaining element. The chair remains stationary when no one sits on the chair, so as to enhance the safety of an office worker.

REFERENCES:
patent: 2537296 (1951-01-01), Yeakel
patent: 4747180 (1988-05-01), Screen
patent: 4807328 (1989-02-01), Hezel
patent: 4821369 (1989-04-01), Daniels

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