CH508461A - Drill bits with hard metal cutting edge, especially for drilling concrete or artificial stone - Google Patents
Drill bits with hard metal cutting edge, especially for drilling concrete or artificial stoneInfo
- Publication number
- CH508461A CH508461A CH259470A CH259470A CH508461A CH 508461 A CH508461 A CH 508461A CH 259470 A CH259470 A CH 259470A CH 259470 A CH259470 A CH 259470A CH 508461 A CH508461 A CH 508461A
- Authority
- CH
- Switzerland
- Prior art keywords
- cutting edge
- hard metal
- drill bits
- artificial stone
- metal cutting
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
- E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691921677 DE1921677B2 (en) | 1969-04-28 | 1969-04-28 | ROTARY TURN DRILL |
Publications (1)
Publication Number | Publication Date |
---|---|
CH508461A true CH508461A (en) | 1971-06-15 |
Family
ID=5732675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259470A CH508461A (en) | 1969-04-28 | 1970-02-23 | Drill bits with hard metal cutting edge, especially for drilling concrete or artificial stone |
Country Status (6)
Country | Link |
---|---|
US (1) | US3674101A (en) |
AT (1) | AT301424B (en) |
CH (1) | CH508461A (en) |
DE (1) | DE1921677B2 (en) |
FR (1) | FR2042136A5 (en) |
GB (1) | GB1270347A (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143723A (en) * | 1977-10-04 | 1979-03-13 | Schmotzer Norman H | Carbide tipped drill bit for boring holes in concrete and steel |
US4503920A (en) * | 1981-08-10 | 1985-03-12 | Burke Clement | Masonry bit |
DE3538191C2 (en) * | 1985-10-26 | 1996-09-19 | Hilti Ag | Rock drill |
DE3540355C2 (en) * | 1985-11-14 | 1996-01-11 | Duss Maschf | Drill for rotary drilling |
US5288183A (en) * | 1986-08-18 | 1994-02-22 | Black & Decker Inc. | Self-centering drill bit with pilot tip |
GB8624430D0 (en) * | 1986-10-11 | 1986-11-12 | Waddell G | Piloted drill bit |
DE3742661A1 (en) * | 1987-12-16 | 1989-07-13 | Hawera Probst Kg Hartmetall | ROCK DRILL |
US5011342A (en) * | 1988-03-14 | 1991-04-30 | 501 Greenfield Industries, Inc. | Twist drill |
DE3825107C2 (en) * | 1988-07-23 | 1996-07-11 | Hilti Ag | Rock drill with cutting insert |
TW299385B (en) | 1994-12-12 | 1997-03-01 | Black & Decker Inc | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
US5918105A (en) | 1994-12-12 | 1999-06-29 | Black & Decker Inc. | Cutting tools for drilling concrete, aggregate, masonry or the like materials |
GB2303810A (en) * | 1995-07-29 | 1997-03-05 | Black & Decker Inc | Masonry drill bit |
US5641028A (en) * | 1995-08-10 | 1997-06-24 | Black & Decker Inc. | Drill bit with debris conveying flute |
GB2318072A (en) * | 1996-09-21 | 1998-04-15 | Plansee Tizit Gmbh | Masonry bit |
US5967712A (en) * | 1998-11-03 | 1999-10-19 | Kennametal Inc. | Cutting tool for machining bores in materials having spring-back |
DE29902665U1 (en) * | 1999-02-15 | 1999-04-29 | Drebo Werkzeugfab Gmbh | Stone drill |
DE10024433A1 (en) | 2000-05-19 | 2001-11-29 | Hawera Probst Gmbh | Rock drill |
DE10351183A1 (en) * | 2003-11-03 | 2005-06-02 | Illinois Tool Works Inc., Glenview | rock drill |
US7237986B2 (en) | 2004-08-09 | 2007-07-03 | Black & Decker Inc. | High speed metal drill bit |
DE102007000848A1 (en) * | 2007-10-11 | 2009-04-23 | Hilti Aktiengesellschaft | self-tapping |
US10507534B2 (en) | 2016-03-17 | 2019-12-17 | O-Tags, Inc. | Systems, methods, and apparatus for reliably installing survey tags |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1007037A (en) * | 1911-02-25 | 1911-10-24 | Allan J Macdonald | Drill. |
DE584358C (en) * | 1932-10-19 | 1933-09-18 | Siemens Schuckertwerke Akt Ges | Rock drill |
US2230645A (en) * | 1938-02-01 | 1941-02-04 | Western Electric Co | Drill |
US2646701A (en) * | 1949-12-27 | 1953-07-28 | Peter A Letien | Stepped edge cutting tool |
US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
US2879036A (en) * | 1956-06-25 | 1959-03-24 | Philip T Wheeler | Masonry drill |
US3447616A (en) * | 1966-12-29 | 1969-06-03 | Zigmund E Granat | Drills |
US3460409A (en) * | 1967-05-10 | 1969-08-12 | Allied Machine & Eng Corp | Chip breaker for spade drill |
-
1969
- 1969-04-28 DE DE19691921677 patent/DE1921677B2/en not_active Withdrawn
-
1970
- 1970-02-23 CH CH259470A patent/CH508461A/en not_active IP Right Cessation
- 1970-02-26 AT AT177570A patent/AT301424B/en not_active IP Right Cessation
- 1970-03-13 GB GB02106/70A patent/GB1270347A/en not_active Expired
- 1970-03-19 FR FR7009897A patent/FR2042136A5/fr not_active Expired
- 1970-04-08 US US26677A patent/US3674101A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3674101A (en) | 1972-07-04 |
FR2042136A5 (en) | 1971-02-05 |
DE1921677B2 (en) | 1977-09-29 |
DE1921677A1 (en) | 1970-11-05 |
AT301424B (en) | 1972-09-11 |
GB1270347A (en) | 1972-04-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |