IT1155281B - Valvola di scarico particolarmente per scalpelli da roccia - Google Patents

Valvola di scarico particolarmente per scalpelli da roccia

Info

Publication number
IT1155281B
IT1155281B IT6714582A IT6714582A IT1155281B IT 1155281 B IT1155281 B IT 1155281B IT 6714582 A IT6714582 A IT 6714582A IT 6714582 A IT6714582 A IT 6714582A IT 1155281 B IT1155281 B IT 1155281B
Authority
IT
Italy
Prior art keywords
chisels
rock
exhaust valve
valve particularly
exhaust
Prior art date
Application number
IT6714582A
Other languages
English (en)
Other versions
IT8267145A0 (it
IT8267145A1 (it
Inventor
Erwin Siegfried Oelke
Original Assignee
Smith International
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
Application filed by Smith International filed Critical Smith International
Publication of IT8267145A0 publication Critical patent/IT8267145A0/it
Publication of IT8267145A1 publication Critical patent/IT8267145A1/it
Application granted granted Critical
Publication of IT1155281B publication Critical patent/IT1155281B/it

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
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7929—Spring coaxial with valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Sealing Devices (AREA)
  • Earth Drilling (AREA)
  • Safety Valves (AREA)
IT6714582A 1981-02-09 1982-02-08 Valvola di scarico particolarmente per scalpelli da roccia IT1155281B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/232,936 US4388984A (en) 1981-02-09 1981-02-09 Two-stage pressure relief valve

Publications (3)

Publication Number Publication Date
IT8267145A0 IT8267145A0 (it) 1982-02-08
IT8267145A1 IT8267145A1 (it) 1983-08-08
IT1155281B true IT1155281B (it) 1987-01-28

Family

ID=22875186

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6714582A IT1155281B (it) 1981-02-09 1982-02-08 Valvola di scarico particolarmente per scalpelli da roccia

Country Status (3)

Country Link
US (1) US4388984A (it)
CA (1) CA1175039A (it)
IT (1) IT1155281B (it)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577705A (en) * 1984-04-23 1986-03-25 Smith International, Inc. Bellows lubricant pressurizer for sealed bearing rock bits
US4593775A (en) * 1985-04-18 1986-06-10 Smith International, Inc. Two-piece pressure relief valve
US5363930A (en) * 1993-10-15 1994-11-15 Baker Hughes Incorporated Dual-diaphragm lubricant compensator for earth-boring bits
US5513711A (en) * 1994-08-31 1996-05-07 Williams; Mark E. Sealed and lubricated rotary cone drill bit having improved seal protection
US5441120A (en) * 1994-08-31 1995-08-15 Dresser Industries, Inc. Roller cone rock bit having a sealing system with double elastomer seals
US5513715A (en) * 1994-08-31 1996-05-07 Dresser Industries, Inc. Flat seal for a roller cone rock bit
US5490570A (en) * 1994-12-01 1996-02-13 Briscoe Tool Company Earth boring bit and lubricator/compensator therefor
US5636700A (en) * 1995-01-03 1997-06-10 Dresser Industries, Inc. Roller cone rock bit having improved cutter gauge face surface compacts and a method of construction
US5722497A (en) * 1996-03-21 1998-03-03 Dresser Industries, Inc. Roller cone gage surface cutting elements with multiple ultra hard cutting surfaces
US6138778A (en) * 1999-08-20 2000-10-31 Camco International Inc. Rock bit lubricant relief valve
US7665547B2 (en) * 2005-11-17 2010-02-23 Smith International, Inc. Drill bit reservoir with controllable relief pressure
US8579046B2 (en) * 2007-09-13 2013-11-12 Burintekh USA, LLC Pressure compensator for drill bit
EP2679515B1 (en) * 2008-12-31 2014-07-02 W.L. Gore & Associates GmbH Venting device
RU2491407C2 (ru) * 2011-11-24 2013-08-27 Открытое акционерное общество "Волгабурмаш" (ОАО "Волгабурмаш") Буровое шарошечное долото с герметизированной опорой
RU2488679C1 (ru) * 2012-01-11 2013-07-27 Открытое акционерное общество "Волгабурмаш" (ОАО "Волгабурмаш") Резервуар для смазочной системы бурового шарошечного долота
RU2484232C1 (ru) * 2012-02-24 2013-06-10 Николай Митрофанович Панин Опора шарошечного бурового долота
US9163458B2 (en) 2013-02-13 2015-10-20 Varel International, Ind., L.P. Rock bit having a flexible metal faced seal
US9091130B2 (en) 2013-02-13 2015-07-28 Varel International, Ind., L.P. Rock bit having a radially self-aligning metal faced seal
US9163459B2 (en) * 2013-02-13 2015-10-20 Varel International, Ind., L.P. Rock bit having a pressure balanced metal faced seal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721306A (en) * 1971-11-24 1973-03-20 Dresser Ind Pressure equalizing system for rock bits
US3847234A (en) * 1972-06-01 1974-11-12 Reed Tool Co Pressure relief device for drill bit lubrication system
GB1384046A (en) * 1972-11-30 1975-02-19 Gerdts Gustav F Kg Non-return valves
US3866695A (en) * 1974-07-01 1975-02-18 Dresser Ind Bearing Cavity Pressure Maintenance Device For Sealed Bearing Rock Bit
US4161223A (en) * 1978-03-13 1979-07-17 Smith International, Inc. Pressure relief valve for rock bits
US4248484A (en) * 1979-09-24 1981-02-03 Smith International, Inc. Pressure venting O-ring bearing seal for rock bits

Also Published As

Publication number Publication date
IT8267145A0 (it) 1982-02-08
IT8267145A1 (it) 1983-08-08
US4388984A (en) 1983-06-21
CA1175039A (en) 1984-09-25

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