Drill bit

Details Drill bit Drill bit

1997-09-17

2000-02-08

Neuder, William

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

408230, B23B 5102

Patent

active

060218576

ABSTRACT:
A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.

REFERENCES:
patent: 2879036 (1959-03-01), Wheeler
patent: 4189266 (1980-02-01), Koslow
patent: 4968193 (1990-11-01), Chaconas et al.
patent: 5492187 (1996-02-01), Neukirchen et al.
U.S. Ser. No. 256,749, Silsby, filed May 05, 1897.

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