Patent · US Expired

Adjustable-height chair column

US7328875B2 · kind B2 · utility

5Cited by

7References

12Claims

0Family size

Assignee

SUSPA GMBH · DE

Inventors

Helmut Kastner · Neukirchen, DE
Gerhard Wunderling · Pegnitz, DE

Key dates

Filing date	Jan 5, 2005
Grant date	Feb 12, 2008
Priority date	—
Expiry date	Dec 25, 2025

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47C3/30
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

An adjustable-height chair column comprises an upright tube and a gas spring, the piston rod of which is fixed in the upright tube, and the housing of which is displaceably guided in the upright tube. A safeguard against rotation is provided which, in the extended position, locks the housing and the upright tube against rotation.

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