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. 13, 2004
Filed:
May. 02, 2002
Karl Frauhammer, Leinfelden-Echterdingen, DE;
Frank Mueller, Deckenpfronn, DE;
Gerhard Meixner, Filderstadt, DE;
Heinz Schnerring, Dettenhausen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A drill hammer or riveter, includes a housing ( ), in which a hammering mechanism ( ) is accommodated that in an axially displaceably supported guide tube ( ) has a reciprocating piston ( ) and a striker ( ), drivable by the piston ( ) via an air cushion; the hammering mechanism ( ) can be moved out of an idling position into a hammering position by an axial displacement of the guide tube ( ); the guide tube ( ) is urged by a restoring spring ( ) in the direction of the idling position with a restoring force: and between the guide tube ( ) and the housing ( ), at least one damping and/or spring member ( ) is provided, which in the hammering position of the guide tuber ( ) has a spring or damping characteristic between the guide tube ( ) and the housing ( ) that deviates from the restoring spring ( ) in the region of the idling position.