Boring or penetrating the earth – Bit or bit element – Impact or percussion type
Patent
1995-02-14
1996-12-31
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Impact or percussion type
175426, 175413, 29525, E21B 1052, E21B 1056, E21B 1062
Patent
active
055884970
ABSTRACT:
A method of mounting a hard insert in a cutting tool such as a drill bit is disclosed. The insert has a head and a shank which tapers inwardly in a direction away from the head of the insert. The cutting tool body has several seats which are shaped and tapered complementally to the insert shank. The insert is pressed or tapped into the seat so that the insert shank engages the seat in the tool in a friction fit. The insert shank may be frustoconical, or, alternatively, polygonal or irregular in shape. The taper of the shank (and the complemental taper of the seat) should be relatively shallow, with an included angle in the range of 4.degree. to 14.degree.. Preferably, the included angle of the shank should be slightly greater than that of the seat.
REFERENCES:
patent: 2097030 (1937-10-01), Killgore
patent: 2121202 (1938-06-01), Killgore
patent: 2161062 (1939-06-01), Killgore
patent: 4014395 (1977-03-01), Pearson
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4334586 (1982-06-01), Schumacher
patent: 4598779 (1986-07-01), Liljekvist et al.
patent: 4607712 (1986-08-01), Larsson
patent: 5220967 (1993-06-01), Monyak
Galison Drilling (Proprietary) Limited
Novosad Stephen J.
LandOfFree
Mounting drill buttons does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mounting drill buttons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mounting drill buttons will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1135630