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:
Oct. 15, 2002
Filed:
Dec. 19, 2000
Roland Hasler, Vaduz, LI;
Kaveh Towfighi, Sigmarszell, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
An internal combustion-engined tool including a piston and a combustion chamber ( ) for generating power for driving the piston and having a bottom ( ) adapted to receive the piston plate ( ), an end wall ( ) located opposite the bottom ( ), a movable wall ( ) located between the bottom ( ) and the end wall ( ) and provided with an opening element ( ), a movable separation wall ( ) located between the bottom ( ) and the movable wall ( ) and provided with a plurality of openings ( ), and an arrangement ( ) for injecting fuel gas into a space formed between the end wall and the movable wall upon the movable wall ( ) and the separation wall ( ) being displaceable in a direction of the bottom ( ) upon collapsing of the combustion chamber ( ).