Cutting section for a drill bit
AssigneeHilti Aktiengesellschaft
InventorsFlorian SCHROEDER, Guenter DOMANI, Pingyan RONG
Life of this patent
Estimating the term…
Abstract
A cutting section (11) which is connectable to a drill shaft section via a releasable connecting device. The cutting section includes a first closed tubular element (14) which is in the form of a first hollow cylinder, a second closed tubular element (15) which is in the form of a second hollow cylinder, and one or more drill segments (16) which are connected to the first closed tubular element (14) and to the second closed tubular element (15).
Claims13
1-12. (canceled)
A cutting section for a drill bit, the cutting section being connectable to a drill shaft section of the drill bit via a releasable connection, the cutting section comprising:
- a first closed tubular element in the form of a first hollow cylinder with a first outer lateral surface, a first inner lateral surface, a first lower end surface and a first upper end surface, and having a first hollow cylinder height, a first inside diameter and a first outside diameter;
- a second closed tubular element in the form of a second hollow cylinder with a second outer lateral surface, a second inner lateral surface, a second lower end surface and a second upper end surface, and having a second hollow cylinder height, a second inside diameter and a second outside diameter, wherein the first outside diameter is smaller than the second inside diameter, and the first outer lateral surface touches the second inner lateral surface;
- and
- at least one drill segment;
- the first closed tubular element being pushed into the second closed tubular element, and the at least one drill segment being connected to the first closed tubular element and to the second closed tubular element.
Dependencies are inferred from the claim text.