CA1242463A - Trepan a molettes multiples - Google Patents
Trepan a molettes multiplesInfo
- Publication number
- CA1242463A CA1242463A CA000436921A CA436921A CA1242463A CA 1242463 A CA1242463 A CA 1242463A CA 000436921 A CA000436921 A CA 000436921A CA 436921 A CA436921 A CA 436921A CA 1242463 A CA1242463 A CA 1242463A
- Authority
- CA
- Canada
- Prior art keywords
- insert
- cutting edge
- bit
- inserts
- clearance face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42431182A | 1982-09-17 | 1982-09-17 | |
US424,311 | 1982-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1242463A true CA1242463A (fr) | 1988-09-27 |
Family
ID=23682180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000436921A Expired CA1242463A (fr) | 1982-09-17 | 1983-09-16 | Trepan a molettes multiples |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5972397A (fr) |
CA (1) | CA1242463A (fr) |
IN (1) | IN160174B (fr) |
MX (1) | MX157916A (fr) |
ZA (1) | ZA836826B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8418481D0 (en) * | 1984-07-19 | 1984-08-22 | Nl Petroleum Prod | Rotary drill bits |
JPH01164386U (fr) * | 1988-05-10 | 1989-11-16 | ||
JPH02125008U (fr) * | 1989-03-22 | 1990-10-15 | ||
JPH0750473Y2 (ja) * | 1990-08-22 | 1995-11-15 | 東芝タンガロイ株式会社 | コニカルビット |
JP4622117B2 (ja) * | 2001-02-20 | 2011-02-02 | 株式会社タンガロイ | シールド掘削機用ビット |
-
1983
- 1983-09-05 IN IN605/DEL/83A patent/IN160174B/en unknown
- 1983-09-12 MX MX19868283A patent/MX157916A/es unknown
- 1983-09-14 ZA ZA836826A patent/ZA836826B/xx unknown
- 1983-09-16 CA CA000436921A patent/CA1242463A/fr not_active Expired
- 1983-09-17 JP JP17062883A patent/JPS5972397A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
IN160174B (fr) | 1987-06-27 |
JPS5972397A (ja) | 1984-04-24 |
MX157916A (es) | 1988-12-19 |
JPS6160235B2 (fr) | 1986-12-19 |
ZA836826B (en) | 1984-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |