Drill bit for hand-held drilling machines

Details Drill bit for hand-held drilling machines Drill bit for hand-held drilling machines

1985-08-08

1987-04-07

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Tool or tool with support

Including detailed shank

279 195, B23B 3106, B23B 5102

Patent

active

046556516

ABSTRACT:
A drill bit with an axially elongated shank is suitable for use in all known conventional hand-held drilling machines. The shank is generally cylindrically shaped with axially extending first grooves open at the free rear end face of the shank. Axially extending second grooves are superimposed at least in part on the first grooves and are spaced from the rear end face. Each second groove forms at least one shoulder face disposed transversely of the shank axis and oriented in the direction facing oppositely to the rear end face. Accordingly, the drill bit, due to its first grooves, can be utilized in the chucks presently used in drilling machines and percussion drilling machines. Further, due to the second grooves, the drill bit can be clamped for limited axial movement in the chucks of known hammer drills.

REFERENCES:
patent: 2039855 (1936-05-01), Stone
patent: 4047722 (1977-09-01), Nielsen et al.
patent: 4512692 (1985-04-01), Nielsen

Affiliated with

Also associated with

Rating

Drill bit for hand-held drilling machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill bit for hand-held drilling machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill bit for hand-held drilling machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1083484