US 6,981,625 B2
Percussive electrical hand-held power tool
Hanspeter Schad, Grabs (Switzerland)
Assigned to Hilti Aktiengesellschaft, Schaan (Liechtenstein)
Filed on Jan. 20, 2004, as Appl. No. 10/761,545.
Claims priority of application No. 103 02 089 (DE), filed on Jan. 17, 2003.
Prior Publication US 2004/0206521 A1, Oct. 21, 2004
Int. Cl. B25C 1/08 (2006.01)
U.S. Cl. 227—9 9 Claims
OG exemplary drawing
 
1. An electrical hand-held power tool for at least partially percussive driving of a tool (1) along a striking axis (A), comprising a striking mechanism (2) having striking means (3) for generating impact forces on the anterior arranged tool (1), and a housing (5) enclosing the striking mechanism (2) and having a handle (6) affixed thereon, wherein the striking means (3) is formed as a high-energy piezo actor connected to a voltage pulse generating unit (7) and is rearwardly fixed to the housing (5), and wherein the voltage pulse generating unit (7) has a control input (10) connected to a deformation sensor (11).