CA1227789A - Trepan de forage a molettes et garniture d'etancheite texturisee - Google Patents
Trepan de forage a molettes et garniture d'etancheite texturiseeInfo
- Publication number
- CA1227789A CA1227789A CA000491388A CA491388A CA1227789A CA 1227789 A CA1227789 A CA 1227789A CA 000491388 A CA000491388 A CA 000491388A CA 491388 A CA491388 A CA 491388A CA 1227789 A CA1227789 A CA 1227789A
- Authority
- CA
- Canada
- Prior art keywords
- bearing
- seal member
- lubricant
- bit
- roller cutter
- 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000491388A CA1227789A (fr) | 1985-09-24 | 1985-09-24 | Trepan de forage a molettes et garniture d'etancheite texturisee |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000491388A CA1227789A (fr) | 1985-09-24 | 1985-09-24 | Trepan de forage a molettes et garniture d'etancheite texturisee |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1227789A true CA1227789A (fr) | 1987-10-06 |
Family
ID=4131451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000491388A Expired CA1227789A (fr) | 1985-09-24 | 1985-09-24 | Trepan de forage a molettes et garniture d'etancheite texturisee |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA1227789A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5016719A (en) * | 1990-01-24 | 1991-05-21 | Western Rock Bit Company Limited | Rotary cone type rock bits |
US5186267A (en) * | 1990-02-14 | 1993-02-16 | Western Rock Bit Company Limited | Journal bearing type rock bit |
-
1985
- 1985-09-24 CA CA000491388A patent/CA1227789A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5016719A (en) * | 1990-01-24 | 1991-05-21 | Western Rock Bit Company Limited | Rotary cone type rock bits |
US5186267A (en) * | 1990-02-14 | 1993-02-16 | Western Rock Bit Company Limited | Journal bearing type rock bit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |