SE8304638D0 - DOUBLE WIRING CHRONICLE - Google Patents
DOUBLE WIRING CHRONICLEInfo
- Publication number
- SE8304638D0 SE8304638D0 SE8304638A SE8304638A SE8304638D0 SE 8304638 D0 SE8304638 D0 SE 8304638D0 SE 8304638 A SE8304638 A SE 8304638A SE 8304638 A SE8304638 A SE 8304638A SE 8304638 D0 SE8304638 D0 SE 8304638D0
- Authority
- SE
- Sweden
- Prior art keywords
- screw threads
- diameter
- shank
- chronicle
- bore
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
Abstract
A two-piece drill bit 10 for drilling a hole in earth or rock has means for isolating mating screw threads 24, 44 from forces due to bending moments occurring between the shank 12 and the bit head 14. The bit head 14 has a smooth bore 46 of a diameter less than the minor diameter of the screw threads on one side of the threaded bore and a counter bore 42 of a diameter greater than the major diameter of the screw threads on the other. The shank has a locating diameter 22 at one end and a flange 25 with an outer diameter 26 on the other side of the screw threads. The diameters 22 and 26 are such as to locate and engage the bores 46 and 42, respectively, when the screw threads are in threading engagement. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41254382A | 1982-08-30 | 1982-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8304638D0 true SE8304638D0 (en) | 1983-08-26 |
SE8304638L SE8304638L (en) | 1984-03-01 |
Family
ID=23633423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8304638A SE8304638L (en) | 1982-08-30 | 1983-08-26 | DOUBLE WIRING CHRONICLE |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5976394A (en) |
BR (1) | BR8304683A (en) |
DE (1) | DE3330025A1 (en) |
GB (1) | GB2127463A (en) |
SE (1) | SE8304638L (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4540056A (en) * | 1984-05-03 | 1985-09-10 | Inco Limited | Cutter assembly |
DE3819462C1 (en) * | 1988-06-08 | 1990-05-23 | Johannes 4130 Moers De Radtke | Drilling head for making small-diameter and large-diameter boreholes |
US4919221A (en) * | 1989-04-06 | 1990-04-24 | Numa Tool Company | Impact drill bit assembly and replaceable parts thereof |
DE3916505C1 (en) * | 1989-05-20 | 1990-08-23 | Johannes 4130 Moers De Radtke | Drilling tool for producing large and small boreholes - includes bolts on replaceable holder in which there are nodular cutting inserts |
DE3941609C1 (en) * | 1989-12-16 | 1991-10-24 | Johannes 4130 Moers De Radtke | Boring head for mining - has head and shaft provided with fluid flushing channels and tapering surface on head |
US5322139A (en) * | 1993-07-28 | 1994-06-21 | Rose James K | Loose crown underreamer apparatus |
DE19541163A1 (en) * | 1995-11-04 | 1997-05-07 | Hawera Probst Kg Hartmetall | Drilling tool, in particular for processing stone |
US6502650B1 (en) * | 2000-11-15 | 2003-01-07 | Sandvik Ab | Percussive down-the-hole hammer for rock drilling, and a drill bit used therein |
PE20100008A1 (en) | 2008-01-08 | 2010-02-05 | Esco Corp | ROLLER TIP FOR TERRACERY WORK |
JP5358492B2 (en) * | 2009-09-08 | 2013-12-04 | 株式会社ジオ機材 | Connection structure for hammering rod |
AT509643B1 (en) | 2010-04-07 | 2013-08-15 | Dywidag Systems Int Gmbh | TWO-PIECE DRILLING TOOL FOR HANDLING OR DRILLING HOLES IN FLOOR OR ROCK MATERIALS |
CN109162648A (en) * | 2018-09-12 | 2019-01-08 | 成都希能能源科技有限公司 | A kind of chance card buries the drill bit that can give up |
US20240117687A1 (en) * | 2019-10-11 | 2024-04-11 | Sandvik Mining And Construction Tools Ab | Shoulder protected drilling assembly |
-
1983
- 1983-08-19 DE DE19833330025 patent/DE3330025A1/en not_active Withdrawn
- 1983-08-24 GB GB08322798A patent/GB2127463A/en not_active Withdrawn
- 1983-08-26 SE SE8304638A patent/SE8304638L/en not_active Application Discontinuation
- 1983-08-29 BR BR8304683A patent/BR8304683A/en unknown
- 1983-08-30 JP JP15725783A patent/JPS5976394A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
GB8322798D0 (en) | 1983-09-28 |
SE8304638L (en) | 1984-03-01 |
JPS5976394A (en) | 1984-05-01 |
GB2127463A (en) | 1984-04-11 |
BR8304683A (en) | 1984-04-10 |
DE3330025A1 (en) | 1984-03-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8304638-3 |