BR7305126D0 - IMPROVEMENTS IN DRILLING TREPANO - Google Patents
IMPROVEMENTS IN DRILLING TREPANOInfo
- Publication number
- BR7305126D0 BR7305126D0 BR512673A BR512673A BR7305126D0 BR 7305126 D0 BR7305126 D0 BR 7305126D0 BR 512673 A BR512673 A BR 512673A BR 512673 A BR512673 A BR 512673A BR 7305126 D0 BR7305126 D0 BR 7305126D0
- Authority
- BR
- Brazil
- Prior art keywords
- trepano
- drilling
- drilling trepano
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00330412A US3847234A (en) | 1972-06-01 | 1973-02-07 | Pressure relief device for drill bit lubrication system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7305126D0 true BR7305126D0 (en) | 1974-09-24 |
Family
ID=23289651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR512673A BR7305126D0 (en) | 1973-02-07 | 1973-07-10 | IMPROVEMENTS IN DRILLING TREPANO |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5937389B2 (en) |
BR (1) | BR7305126D0 (en) |
DE (1) | DE2332737A1 (en) |
NL (1) | NL7308915A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5996387A (en) * | 1982-11-25 | 1984-06-02 | スタ−ロイ産業株式会社 | Rotary rock bit |
JPS59178494U (en) * | 1983-05-13 | 1984-11-29 | 株式会社小松製作所 | Mechanical seal device for turbo drill |
US4552228A (en) * | 1984-02-21 | 1985-11-12 | Varel Mfg. Co. | Low pressure differential compensator |
US4577705A (en) * | 1984-04-23 | 1986-03-25 | Smith International, Inc. | Bellows lubricant pressurizer for sealed bearing rock bits |
JPS638789Y2 (en) * | 1984-10-25 | 1988-03-16 | ||
JPS6180884U (en) * | 1984-10-31 | 1986-05-29 | ||
US6092611A (en) * | 1997-05-28 | 2000-07-25 | Dresser Industries, Inc. | Encapsulated elastomeric relief valve |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3719241A (en) * | 1971-11-24 | 1973-03-06 | Dresser Ind | Free breathing lubrication system for sealed bearing rock bits |
-
1973
- 1973-06-27 NL NL7308915A patent/NL7308915A/xx not_active Application Discontinuation
- 1973-06-27 DE DE19732332737 patent/DE2332737A1/en not_active Ceased
- 1973-06-29 JP JP48072981A patent/JPS5937389B2/en not_active Expired
- 1973-07-10 BR BR512673A patent/BR7305126D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL7308915A (en) | 1974-08-09 |
DE2332737A1 (en) | 1974-08-08 |
JPS49111802A (en) | 1974-10-24 |
JPS5937389B2 (en) | 1984-09-10 |
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