Impact mechanism arrangement
AssigneeHilti Aktiengesellschaft
InventorsUto Plank, Ulrich Mandel, Josef Fünfer
Life of this patent
Estimating the term…
Abstract
Hammer drill and/or chipping hammer having a drive motor, an impact mechanism and a tool fitting for fitting a tool, wherein the impact mechanism has an anvil that is axially displaceable in an anvil guide and acts on the tool, wherein the impact mechanism has an idle-strike damper element and a rebound-strike damper element, which are formed in one piece with one another and as such form a combined damper element, wherein the anvil guide is arranged outside, preferably only outside the combined damper element.
Claims21
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 combined damper element is located axially between the two bearings.
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.
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 axially moveably supported by the two bearings between the idle-strike damper element and the rebound-strike damper element.
Dependencies are inferred from the claim text.