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US 6,776,245 B2Granted
Electrical hand-held power tool with an electropneumatic percussion mechanism
AssigneeHilti Aktiengesellschaft
InventorsFerdinand Kristen, Herbert Daxenberger
Life of this patent
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Abstract
An electrical hand-held power tool including a percussion assembly (3) with a percussion mechanism (2) and displaceable, substantially vibration-free, in an outer housing (6) provided with a plurality of aeration openings (4) and at least one cooling conduit (7) connecting the aeration openings (4) with a cooling ventilator (5) and securable on the percussion assembly (3).
Claims3
An electrical hand-held power tool, comprising an outer housing (6) having a plurality of aeration openings (4);
- a percussion assembly (3) displaceable in the outer housing (6) substantially vibration-free and having a percussion mechanism (2);
- means (16) located in the outer housing for supporting the percussion assembly (3) for a substantially vibration-free displacement relative to the outer housing (6);
- a cooling ventilator (5) located in the outer housing (6);
- and at least one cooling conduit (7) connecting the aeration openings (4) with the cooling ventilator (5) and secured on the percussion assembly (3).
1 more element
Dependencies are inferred from the claim text.