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US 9,221,164 B2Granted
Chisel
AssigneeHilti Aktiengesellschaft
InventorsJens Schneider, Karsten Brandenburg, Zsolt Kosa, Lajos Toth
Life of this patent
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Abstract
A chisel according to the present technology has a reduced tendency to jam in a substrate. The chisel is on an axis in the striking direction with successively a striking surface, a shank, a spreading element and a tip. The spreading element has multiple ribs around the axis extending along the axis 2. The ribs each have a wave shape formed through a tangential deflection with respect to the axis.
Claims21
A chisel having an axis in a striking direction, the chisel comprising:
- a striking surface' a shank;
- a spreading element;
- and a tip;
- wherein the striking surface, shank, spreading element and tip are arranged successively along the axis;
- wherein the spreading element has ribs, spaced radially apart from each other about the axis, extending longitudinally along the axis and, wherein each rib has a wave shape formed with a deflection in a circumferential direction around the axis.
2 more elements
A chisel having an axis in a striking direction, the chisel comprising:
- a striking surface, a shank, a spreading element and a tip arranged successively along the axis, the spreading element having ribs extending longitudinally along the axis and spaced radially apart from each other about the axis, each rib having a wave shape formed with a deflection in a circumferential direction around the axis;
- wherein an amplitude of the deflection in a circumferential direction is equal to an amplitude of the deflection contrary to the circumferential direction;
- and wherein at least one of the ribs is deflected parallel to itself in the circumferential direction through the wave-shaped deflection about the axis.
Dependencies are inferred from the claim text.