Adjustable-length column for chairs, tables or the like

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

1994-04-12

1996-07-02

Braun, Leslie A.

Supports

Stand

Understructure

248631, 248622, 248404, F16M 1124

Patent

active

055314139

ABSTRACT:
An adjustable-length column for chairs or the like has an upright tube and a pneumatic or hydropneumatic length-adjusting element arranged in the latter, the housing of the element being radially supported in the upright tube and displaceably guided in the direction of a common axis. A profile guarding against twisting is tightly arranged on the housing in particular by shrinking and has at least one radially projecting web which extends parallel to the axis and engages with a groove-like recess of a guide which is non-rotatably connected with the upright tube.

REFERENCES:
patent: 4941799 (1990-07-01), Gordon et al.
patent: 5106157 (1992-04-01), Nagelkirk
patent: 5188345 (1993-02-01), Siegner et al.

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