JPS49111802A - - Google Patents

Info

Publication number
JPS49111802A
JPS49111802A JP7298173A JP7298173A JPS49111802A JP S49111802 A JPS49111802 A JP S49111802A JP 7298173 A JP7298173 A JP 7298173A JP 7298173 A JP7298173 A JP 7298173A JP S49111802 A JPS49111802 A JP S49111802A
Authority
JP
Japan
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.)
Granted
Application number
JP7298173A
Other languages
Japanese (ja)
Other versions
JPS5937389B2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US00330412A external-priority patent/US3847234A/en
Application filed filed Critical
Publication of JPS49111802A publication Critical patent/JPS49111802A/ja
Publication of JPS5937389B2 publication Critical patent/JPS5937389B2/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
JP48072981A 1973-02-07 1973-06-29 drill bit Expired JPS5937389B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00330412A US3847234A (en) 1972-06-01 1973-02-07 Pressure relief device for drill bit lubrication system
US330412 1981-12-14

Publications (2)

Publication Number Publication Date
JPS49111802A true JPS49111802A (en) 1974-10-24
JPS5937389B2 JPS5937389B2 (en) 1984-09-10

Family

ID=23289651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP48072981A Expired JPS5937389B2 (en) 1973-02-07 1973-06-29 drill bit

Country Status (4)

Country Link
JP (1) JPS5937389B2 (en)
BR (1) BR7305126D0 (en)
DE (1) DE2332737A1 (en)
NL (1) NL7308915A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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
JPS6180884U (en) * 1984-10-31 1986-05-29

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6092611A (en) * 1997-05-28 2000-07-25 Dresser Industries, Inc. Encapsulated elastomeric relief valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4859001A (en) * 1971-11-24 1973-08-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4859001A (en) * 1971-11-24 1973-08-18

Cited By (4)

* Cited by examiner, † Cited by third party
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
JPS6322222Y2 (en) * 1983-05-13 1988-06-17
JPS6180884U (en) * 1984-10-31 1986-05-29

Also Published As

Publication number Publication date
DE2332737A1 (en) 1974-08-08
JPS5937389B2 (en) 1984-09-10
NL7308915A (en) 1974-08-09
BR7305126D0 (en) 1974-09-24

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