Patent Number: 7,708,083

Title: Hand power tool with a percussion merchanism, and as a method of operating the hand power tool

Abstract: A hand power tool has a percussion mechanism; a drive motor that drives the percussion mechanism; a conversion element for converting a movement of the drive motor into an axial movement; and an operating unit that adjusts a rotary movement of the conversion element within a percussion period depending on at least one optimization criterium.

Inventors: Dresig; Friedmar (Chemnitz, DE), Hecht; Joachim (Magstadt, DE)

Assignee: Robert Bosch GmbH

International Classification: B25D 9/06 (20060101)

Expiration Date: 5/04/12018