US 12,220,801 B2
Impact mechanism arrangement
Uto Plank, Freising (DE); Ulrich Mandel, Buchloe Honsolgen (DE); and Josef Fünfer, Koenigsbrunn (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/768,381
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Nov. 2, 2020, PCT No. PCT/EP2020/080640
§ 371(c)(1), (2) Date Apr. 12, 2022,
PCT Pub. No. WO2021/094117, PCT Pub. Date May 20, 2021.
Claims priority of application No. 19208476 (EP), filed on Nov. 12, 2019.
Prior Publication US 2024/0123589 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B25D 17/06 (2006.01)
CPC B25D 17/06 (2013.01) [B25D 2222/57 (2013.01); B25D 2250/131 (2013.01)] 21 Claims
OG exemplary drawing
 
20. A hammer drill or chipping hammer comprising:
a drive motor;
an impact mechanism; and
a tool fitting for fitting a tool, wherein the impact mechanism has an anvil axially displaceable in an anvil guide and acting on the tool, wherein the impact mechanism has an idle-strike damper element and a rebound-strike damper element formed in one piece with one another to define a combined damper element, the anvil guide being arranged outside the combined damper element; wherein the anvil guide has two bearings and the anvil is supported axially moveably solely by the two bearings.