The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2003
Filed:
Oct. 06, 2000
Applicant:
Inventors:
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B 7/100 ;
U.S. Cl.
CPC ...
F02B 7/100 ;
Abstract
A method of driving a piston ( of a portable, internal combustion, engine tool by combusting a combustible gas mixture in a combustion chamber ( ) having a combustion chamber wall ( ) located opposite the piston ( ), the method including dividing the combustion chamber ( ) in at least two chamber sections ( ) by providing, between the combustion chamber wall ( ) and the piston ( ), a separation plate ( ) having a plurality of through-openings ( ) and separately adjusting the combustible gas mixture in each chamber section ( ).