Patent · US Expired

Adjustable-length column for chairs, tables or the like

US5531413A · kind A · utility

16Cited by

3References

13Claims

0Family size

Assignee

SUSPA GMBH · DE

Inventors

Herbert Wolf · Wooster, US
Harald Harrer · Dresden, DE

Key dates

Filing date	Apr 12, 1994
Grant date	Jul 2, 1996
Priority date	—
Expiry date	Apr 12, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D3/06
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.