Patent · US Expired

Portable, internal combustion-engined tool and method of driving its piston

US6520127B1 · kind B1 · utility

12Cited by

10References

18Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

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

Key dates

Filing date	Oct 6, 2000
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Oct 6, 2020

Classification

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

Abstract

A method of driving a piston (80 of a portable, internal combustion, engine tool by combusting a combustible gas mixture in a combustion chamber (1) having a combustion chamber wall (14) located opposite the piston (8), the method including dividing the combustion chamber (1) in at least two chamber sections (21, 22) by providing, between the combustion chamber wall (14) and the piston (8), a separation plate (18) having a plurality of through-openings (38) and separately adjusting the combustible gas mixture in each chamber section (21, 22).

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