Adjustable-length column for chairs or the like

Details Adjustable-length column for chairs or the like Adjustable-length column for chairs or the like

1997-12-11

1999-12-28

Ramirez, Ramon O.

Supports

Resilient support

Including spring zone understructure

248161, 403DIG7, A47C 102

Patent

active

060070447

ABSTRACT:
An adjustable-length column for chairs or the like comprises an upright tube with a pneumatic or hydropneumatic length-adjusting element disposed therein. The latter's piston rod, in the vicinity of its free end, is flexibly snap-engaged with a bottom plate of the upright tube.

REFERENCES:
patent: 3711054 (1973-01-01), Bauer
patent: 4969619 (1990-11-01), Bauer et al.
patent: 4979718 (1990-12-01), Bauer et al.
patent: 5120011 (1992-06-01), Mintgen et al.
patent: 5269398 (1993-12-01), Wolf et al.

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