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:
Mar. 18, 2003
Filed:
Jul. 03, 2001
Joachim Thieleke, Wasserburg, DE;
Wolfgang Saxler, Gurtis, AT;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A method of controlling operation a portable, internal combustion engined power tool including a combustion chamber ( ), at least one suction/discharge valve ( )associated with the combustion chamber ( ), and an operational piston ( ) the method including inquiring a displacement position of the operational piston ( ) of the power tool when it is being displaced to its initial position after having performed an operational stroke upon ignition of a fuel gas mixture filling the combustion chamber, and releasing the at least one suction/discharge valve ( ) upon the piston ( ) reaching its initial position; and a power tool which is controlled by the method.