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. 19, 2008
Filed:
Apr. 15, 2005
Rory Britz, Kaufering, DE;
Rainer Ontl, Landsberg am Lech, DE;
Rory Britz, Kaufering, DE;
Rainer Ontl, Landsberg am Lech, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A hammer drill () includes a clockwise and counterclockwise driven tool spindle (), a drive pinion () operatively connectable with the tool spindle () for transmitting a torque thereto, a separate control handle () for selecting one of the hammer drill functions including a pure drilling operation, a pure percussion operation, and a rotary-percussion operation), and a switching device () which is adjustable in accordance with a position of the control handle () and which is shiftable by the control handle () in a clockwise rotation position for effecting a pure drilling operation in a clockwise direction and in a counterclockwise rotation position for effecting a pure drilling operation in a counterclockwise direction.