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:
Jan. 14, 2003
Filed:
Dec. 19, 2000
Applicant:
Inventors:
Assignee:
Hiltie Aktiengeselschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25C 1/08 ;
U.S. Cl.
CPC ...
B25C 1/08 ;
Abstract
A portable, internal combustion-engined tool includes a combustion chamber ( ), a piston ( ) adjoining the combustion chamber ( ), with a pressure build-up in the combustion chamber ( ) providing for movement of the piston ( ) from its initial position, in which the piston adjoins the combustion chamber ( ), away from the combustion chamber ( ). A brake device ( ) retains the piston ( ) substantially in its initial position during build-up of pressure in the combustion chamber ( ), with a braking force applied to piston ( ) being changeable for adjusting the amount of energy generated in the combustion chamber and transmittable to the piston ( ).