Patent · US Expired

Lockable elevating mechanism for the continuous adjustment of chair seats

US5188345A · kind A · utility

9Cited by

7References

8Claims

0Family size

Assignee

SUSPA GMBH · DE

Inventors

Helge Siegner · Altdorf, DE
Ludwig Stadelmann · Altdorf, DE
Herbert Wolf · Wooster, US

Key dates

Filing date	Apr 30, 1992
Grant date	Feb 23, 1993
Priority date	—
Expiry date	Apr 30, 2012

Classification

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

Abstract

In a lockable elevating mechanism for the continuous adjustment of chair seats a guide tube is provided, to the bottom plate of which is secured a piston rod of a longitudinally adjustable gas spring. The guide tube is provided with an additional tube, which can be exited telescopically and and which is guided in a guide bush arrested in the guide tube. The housing of the gas spring is in turn guided in a guide bush arrested in the additional tube. A mechanical spring is provided between the guide tube and the additional tube and acts upon the additional tube in a direction out of the guide tube.

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