Patent · US Expired

Combustion-engined tool

US6460507B2 · kind B2 · utility

19Cited by

1References

5Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Joachim Thieleke · Günzburg, DE
Kaveh Towfighi · Sigmarszell, DE
Iwan Wolf · Chur, CH

Key dates

Filing date	Dec 19, 2000
Grant date	Oct 8, 2002
Priority date	—
Expiry date	Dec 23, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B71/04
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A portable, combustion-engined tool including a collapsible combustion chamber (1) having a movable separation plate (18) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section, an ignition device (52) located in the forechamber section (21), and a collapse control device (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14) after the combustion of the gas mixture in the combustion chamber.

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