Patent · US Active

Combustion-engined setting tool

US7980440B2 · kind B2 · utility

15Cited by

11References

11Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Christian Hahn · Oberböhmsdorf, DE
Rolf Erhardt · Buchs, CH

Key dates

Filing date	Mar 31, 2009
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Jun 8, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25C1/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A combustion-engined setting tool (10) for driving fastening elements in a workpiece includes a combustion chamber (11), a drive piston (15) displaceable in a piston guide (17) and driven by expanding gases produced in the combustion chamber (11), and a device for returning the drive piston (15) in its initial position as a result of pressure difference between chambers formed on opposite axial sides of the piston head (115), and including a pump (20).

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