Back to results
US 10,723,041 B2Granted
Core drill bit
AssigneeSaint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs
InventorJi Wang
Life of this patent
Estimating the term…
Abstract
A core drill bit can include a first region and a second region. The first region can include abrasive particles in a first bond matrix, and the second region can include abrasive particles in a second bond matrix. The first region is connected to the second region. A composition of the first bond matrix can be different from a composition of the second matrix. In a particular embodiment, the first bond matric can include a Co-containing material.
Claims19
A core drill bit comprising:
- an abrasive tip and a drill body, wherein the abrasive tip comprises a first region and a second region;
- and
- a central opening extending through the first region, the second region, and the body,
- wherein the first region comprises abrasive grains within a first bond matrix and a first bond matrix concentration of at least 90% and not greater than 99% for a total weight of the first region, wherein the second region comprises abrasive grains within a second bond matrix, and wherein a composition of the first bond matrix is different from a composition of the second bond matrix.
1 more element
A core drill bit comprising:
- a longitudinal axis running a length of the drill bit;
- a central opening;
- a drill body;
- a first region comprising abrasive grains within a first bond matrix;
- and
- a second region comprising abrasive grains within a second bond matrix,
- wherein the second region is disposed between the drill body and the first region in a direction of the longitudinal axis running the length of the drill bit;
- wherein the first region comprises an annular cross-section about the longitudinal axis of the drill bit, wherein the second region comprises an annular cross-section about the longitudinal axis of the drill bit, and wherein a composition of the first bond matrix is different from a composition of the second bond matrix;
- and
- wherein the central opening extends through the first region and the second region in a direction of the longitudinal axis.
7 more elements
Dependencies are inferred from the claim text.