Patent · US Expired

Air suspension piston

US7255334B2 · kind B2 · utility

0Cited by

28References

6Claims

0Family size

Assignee

VAW Alutubes GmbH · DE

Inventors

Thorsten Schulze · Wunstorf, DE
Franz Steimmel · Wennigsen (Deister), DE
Michael Opitz · Aerzen, DE
Frank Wahner · Hannover, DE

Key dates

Filing date	Dec 24, 2002
Grant date	Aug 14, 2007
Priority date	—
Expiry date	Sep 26, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60G2206/8201
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to an air suspension piston, with the air suspension piston being tube shaped and being made of aluminium. The air suspension piston is formed by a longitudinal-seam welded tube made from an aluminum alloy, and the tube has been longitudinal-seam welded without any weld metal.

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