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1. WO1996040461 - MASONRY DRILL BIT

Publication Number WO/1996/040461
Publication Date 19.12.1996
International Application No. PCT/US1996/008927
International Filing Date 04.06.1996
Chapter 2 Demand Filed 07.01.1997
IPC
E21B 10/44 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10Drill bits
44Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
E21B 10/58 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10Drill bits
46characterised by wear resisting parts, e.g. diamond inserts
58Chisel-type inserts
CPC
E21B 10/445
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
10Drill bits
44Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
445percussion type, e.g. for masonry
E21B 10/58
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
10Drill bits
46characterised by wear resisting parts, e.g. diamond inserts
58Chisel type inserts
Applicants
  • CREDO TOOL COMPANY [US]/[US]
Inventors
  • SCHIMKE, Thomas, O.
Agents
  • SALAZAR, John, F.
Priority Data
08/475,03407.06.1995US
08/545,27219.10.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MASONRY DRILL BIT
(FR) MECHE A MAÇONNERIE
Abstract
(EN)
A masonry drill and method of manufacture is disclosed. The drill has an elongated axial body with at least one discharge groove and a transverse slot located at one end with a hardened drill bit insert brazed within the slot. The hardened insert has projections extending outward from flat planar surfaces which hold the insert in proper orientation within the axial drill body so that it may be brazed into place subsequent to insertion into the drill body.
(FR)
L'invention a pour objet une mèche à maçonnerie et un procédé de fabrication. Cette mèche présente un corps axial allongé, avec au moins une rainure de décharge et une encoche transversale, située au niveau d'une extrémité, dans laquelle vient se loger un insert de mèche durci brasé. L'insert durci comprend des parties saillantes s'étendant vers l'extérieur à partir de surfaces planaires plates qui maintiennent l'insert dans l'orientation correcte dans le corps de mèche axial, de telle sorte qu'il peut être brasé en place avant d'être inséré dans le corps de la mèche.
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