Dust-proof element and a method of its use in an electrical hand-held tool and with a working tool
AssigneeHilti Aktiengesellschaft
InventorsKarl-Heinz Hofmann, Alexander Löffler
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Abstract
A dust-proof element for reducing creeping dispersion of dust along a free surface formed as one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in a range from 5 to 100 μm and spaced from each other by a distance from 5 to 200 μm, and a method of protecting hand-held tools and working tools with the dust-proof element.
Claims11
A dust-proof element for reducing creeping dispersion of dust along a free surface, comprising one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in a range from 5 μm to 100 μm and spaced from each other by a distance from 5 μm to 200 μm.
A method of protecting a housing of a hand-held tool from dust, comprising the steps of providing at least one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in range from 5 to 100 μm and spaced from each other by a distance of 5 to 200 μm;
- and mounting the at least one of dust trap element and dust barrier on at least one of inner and outer profiles of the tool housing.
A method of protecting an electrical hand-held tool having a chuck for receiving a working tool from dust, comprising the steps of providing a dust-proof element comprising one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in range from 5 to 100 μm and spaced from each other by a distance of 5 to 200 μm;
- and mounting the at least one of dust trap element and dust barrier in or adjacent to the tool chuck.
A method of protecting a hand-held electrical tool (1) from dust, comprising the steps of providing at least one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in range from 5 to 100 mm and spaced from each other by a distance of 5 to 200 μm;
- and arranging the at least one of dust trap element and dust barrier on an inner profile of the tool housing.
A method of protecting a pin-shaped tool from dust, comprising the steps of providing at least one of locally limited dust trap element (5) and dust barrier (7) formed as a ring and having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in range from 5 to 100 μm and spaced from each other by a distance of 5 to 200 μm;
- and arranging the at least one of dust trap element and dust barrier on the tool concentrically with a tool rotational axis.
A method of protecting a pin-shaped tool from dust, comprising the steps of providing at least one of locally limited dust trap element (5) and dust barrier (7) formed as a ring and having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in range from 5 to 100 μm and spaced from each other by a distance of 5 to 200 μm;
- and mounting the at least one of dust trap element and dust barrier on each side of the tool concentrically with a tool rotational axis.
Dependencies are inferred from the claim text.