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US 11,213,939 B2Granted
Chisel
AssigneeHilti Aktiengesellschaft
InventorsZsolt Kosa, Aviral Shrot, Carsten Peters, Attila Kenez
Life of this patent
Estimating the term…
Abstract
The chisel includes a tip (2), a working section (6), and an impact surface (3), and a longitudinal axis (7) that extends through the tip (2), the working section (6), and the impact surface (3). The working section (6) includes multiple webs (14) that extend along the longitudinal axis (7) and that are distributed about the longitudinal axis (7) in the circumferential direction (15). For at least one of the webs (14), a dimension (27) in the circumferential direction (15) increases by at least one-third with increasing distance (26) from the longitudinal axis (7). The webs become significantly wider toward the outside and thinner toward the longitudinal axis.
Claims16
A chisel comprising:
- a tip;
- a working section;
- and
- an impact surface,
- a longitudinal axis extending through the tip, the working section, and the impact surface,
- the working section including at least three webs extending along the longitudinal axis and distributed about the longitudinal axis in a circumferential direction about a core, the core having a diameter less than one half of a working section outer diameter,
- for at least one of the webs, a web dimension in the circumferential direction increases by at least one-third with increasing radial distance from the longitudinal axis;
- wherein the at least one web includes a first lateral surface pointing in the circumferential direction, a second lateral surface pointing opposite the circumferential direction, and a rear surface pointing in a radial direction, the first lateral surface and the second lateral surface being inclined relative to one another, and the first lateral surface and the second lateral surface diverge with increasing radial distance from the longitudinal axis so that the web dimension in the circumferential direction, the web dimension in the circumferential direction being between the first lateral surface and the second lateral surface, is largest adjoining the rear surface.
5 more elements
A chisel comprising:
- a tip;
- a working section;
- and
- an impact surface,
- a longitudinal axis extending through the tip, the working section, and the impact surface,
- the working section including at least three webs extending along the longitudinal axis and distributed about the longitudinal axis in a circumferential direction,
- for at least one of the webs, a web dimension in the circumferential direction increases by at least one-third with increasing radial distance from the longitudinal axis;
- wherein the at least one web includes a first lateral surface pointing in the circumferential direction, a second lateral surface pointing opposite the circumferential direction, and a rear surface pointing in a radial direction, the first lateral surface and the second lateral surface being inclined relative to one another, and the first lateral surface and the second lateral surface diverge with increasing radial distance from the longitudinal axis so that the web dimension in the circumferential direction, the web dimension in the circumferential direction being between the first lateral surface and the second lateral surface, is largest adjoining the rear surface;
- the at least one web being inclined relative to the longitudinal axis to define an inclination angle away from the longitudinal axis in the longitudinal direction.
6 more elements
A chisel comprising:
- a tip;
- a working section;
- and
- an impact surface,
- a longitudinal axis extending through the tip, the working section, and the impact surface,
- the working section including at least three webs extending along the longitudinal axis and distributed about the longitudinal axis in a circumferential direction about a core, a cross-sectional area of the core being less than one-third of a total cross-sectional area of the working section,
- for at least one of the webs, a web dimension in the circumferential direction increases by at least one-third with increasing radial distance from the longitudinal axis;
- wherein the at least one web includes a first lateral surface pointing in the circumferential direction, a second lateral surface pointing opposite the circumferential direction, and a rear surface pointing in a radial direction, the first lateral surface and the second lateral surface being inclined relative to one another, and the first lateral surface and the second lateral surface diverge with increasing radial distance from the longitudinal axis so that the web dimension in the circumferential direction, the web dimension in the circumferential direction being between the first lateral surface and the second lateral surface, is largest adjoining the rear surface.
5 more elements
Dependencies are inferred from the claim text.