Brad point drill bit

Details Brad point drill bit Brad point drill bit

1997-10-16

1999-11-09

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

408211, B23B 5102

Patent

active

059801697

ABSTRACT:
A brad point drill bit having a boring tip defined by at least a pair of peripheral cutting members and a center blade disposed therebetween. The center blade is formed with a protruding central cutting edge for engaging a workpiece. The center blade also has two concave lateral cutting edges radially extending from the central cutting edge and rotationally offset therefrom. The peripheral cutting members comprise spurs having two cutting edges and pointed in a clockwise rotational direction of the drill bit.

REFERENCES:
patent: 125759 (1872-04-01), Richards
patent: 413972 (1889-10-01), Shaler
patent: 631572 (1899-08-01), Judson
patent: 750537 (1904-01-01), Hanson
patent: 2332295 (1943-10-01), Bouchal
patent: 2535398 (1950-12-01), Economous
patent: 2600286 (1952-06-01), Weiland
patent: 4050841 (1977-09-01), Hildebrandt
patent: 4222690 (1980-09-01), Hosoi
patent: 4285620 (1981-08-01), Luebbert et al.
patent: 4330229 (1982-05-01), Croydon
patent: 4381162 (1983-04-01), Hosoi
patent: 4561813 (1985-12-01), Schneider
patent: 4625593 (1986-12-01), Schmotzer
patent: 5092719 (1992-03-01), Zsiger
patent: 5549796 (1996-08-01), Durney

Affiliated with

Also associated with

Rating

Brad point drill bit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Brad point drill bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brad point drill bit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1447387