公开(公告)号：USD1000235S1

公开(公告)日：2023-10-03

申请号：US29745198

申请日：2020-08-04

Applicant: Kennametal Inc.

Designer： Marcus Paul ,  Herbert Kauper

Abstract: FIG. 1 is a rear isometric view from above of a propeller wrench showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is another side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is bottom view thereof.
The broken lines in FIG. 1 shows portions of the propeller wrench that form no part of the claim.

公开(公告)号：US20230415247A1

公开(公告)日：2023-12-28

申请号：US18338785

申请日：2023-06-21

Applicant: KENNAMETAL INC.

Inventor： Herbert Kauper ,  Marcus Paul ,  Juergen Schwaegerl

IPC: B23B51/02 ,  B23B51/00

CPC classification number: B23B51/02 ,  B23B2200/04 ,  B23B51/0002

Abstract: A rotary drilling tool (10) has a cutting head (12) with at least one tip (22) and a front-facing main cutting edge (24) defining a maximum diameter (D) of the cutting head (12). The cutting head (12) has an undercut (38) with a radially inwardly springing ledge (44) with a rear-facing blade (42) provided for cutting when pulling the rotary drilling tool (10) out of a workpiece. Furthermore, a method is provided for producing a through-hole in a workpiece by means of such a rotary drilling tool (10).