Tool bit with carrier member and cutting member
AssigneeHilti Aktiengesellschaft
InventorWerner Kleine
Life of this patent
Estimating the term…
Abstract
A tool bit for use in at least one of a drilling and cutting operation is formed of an axially extending carrier member (1) and a cutting member (2). The cutting member (2) has an expansion joint (2a) extending parallel to the axis of the carrier member (1). The expansion joint (2a) is formed by reducing the thickness of the cutting member (2) so that material webs (2b) remain. In the fabrication and formation of the tool bit, the cutting member (2) is a single unit. In the use of the tool bit, due to the expansion joint the cutting member forms individual operating units (2a) affording reduced material expense of the cutting member (2), because of reduced stresses.
Claims20
A tool bit for use in at least one of drilling and cutting operations in concrete, rock, or masonry, comprising an axially extending carrier member (1) having an axis (Z), said carrier member having a working end, a cutting member (2, 3, 4, 5, 6, 7, 8, 9, 10, 11) formed of at least one of a hard material and a carbide material secured in the working end of said carrier member (1), said cutting member (2, 3, 4, 5, 6, 7, 8, 9, 10, 11) having at least one expansion joint (2a, 3a, 4a, 5a, 6a, 7a, 8a, 9a, 10a, 11a) therein extending substantially parallel to the axis (Z) of said carrier member.
A tool bit, as set forth in 7, wherein said center section has a centering tip (2d, 3d, 4d, 6d, 7d, 10d, 11d).
Dependencies are inferred from the claim text.