Patent · US Expired

Drive system for a fastening tool

US6676000B2 · kind B2 · utility

24Cited by

5References

13Claims

0Family size

Assignee

Bollhoff Inc. · DE

Inventors

Hans-Jorg Lang · Deggendorf, DE
Wermer Helmig · Biberach, DE

Key dates

Filing date	Mar 19, 2002
Grant date	Jan 13, 2004
Priority date	—
Expiry date	Jun 25, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/5377
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A drive system for a fastening tool, in particular a riveting tool, includes a punch for a fastening operation and a clamp axially moveable relative to the punch for clamping the workpieces during the fastening operation. The punch is actuated by a drive so as to be displaced axially. During such operation the drive force exerted upon the punch is transmitted to the clamp by force transmitting means comprising an air pressure chamber of variable volume.

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