ZA714204B - Improvements in or relating to rotary cutters - Google Patents

Improvements in or relating to rotary cutters

Info

Publication number
ZA714204B
ZA714204B ZA714204A ZA714204A ZA714204B ZA 714204 B ZA714204 B ZA 714204B ZA 714204 A ZA714204 A ZA 714204A ZA 714204 A ZA714204 A ZA 714204A ZA 714204 B ZA714204 B ZA 714204B
Authority
ZA
South Africa
Prior art keywords
relating
rotary cutters
cutters
rotary
Prior art date
Application number
ZA714204A
Inventor
P Venter
Original Assignee
Mcdonnell P Ltd
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 Mcdonnell P Ltd filed Critical Mcdonnell P Ltd
Priority to ZA714204A priority Critical patent/ZA714204B/en
Priority to CA130,668A priority patent/CA946429A/en
Priority to ZM191/71A priority patent/ZM19171A1/en
Priority to AU37275/71A priority patent/AU441543B2/en
Priority to US00212502A priority patent/US3750772A/en
Publication of ZA714204B publication Critical patent/ZA714204B/en

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
    • 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
    • E21B10/10—Roller bits with roller axle supported at both ends

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)
ZA714204A 1971-06-28 1971-06-28 Improvements in or relating to rotary cutters ZA714204B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ZA714204A ZA714204B (en) 1971-06-28 1971-06-28 Improvements in or relating to rotary cutters
CA130,668A CA946429A (en) 1971-06-28 1971-12-21 Rotary cutters
ZM191/71A ZM19171A1 (en) 1971-06-28 1971-12-22 Improvements in or relating to rotary cutters
AU37275/71A AU441543B2 (en) 1971-06-28 1971-12-23 Improvements in or relating to rotary cutters
US00212502A US3750772A (en) 1971-06-28 1971-12-27 Rotary cutters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA714204A ZA714204B (en) 1971-06-28 1971-06-28 Improvements in or relating to rotary cutters

Publications (1)

Publication Number Publication Date
ZA714204B true ZA714204B (en) 1972-03-29

Family

ID=25563571

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA714204A ZA714204B (en) 1971-06-28 1971-06-28 Improvements in or relating to rotary cutters

Country Status (5)

Country Link
US (1) US3750772A (en)
AU (1) AU441543B2 (en)
CA (1) CA946429A (en)
ZA (1) ZA714204B (en)
ZM (1) ZM19171A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921734A (en) * 1972-10-17 1975-11-25 Kennametal Inc Raise boring head and rolling cutter arrangement therefor
US3851718A (en) * 1972-11-09 1974-12-03 Jarva Inc Roller cutter
US3835944A (en) * 1973-06-12 1974-09-17 Hard Metals Ltd Cutting unit for use on rock boring machines
US4036313A (en) * 1975-07-03 1977-07-19 Smith International, Inc. Mounting for inboard cutters on a raise drill
US4036314A (en) * 1976-06-28 1977-07-19 Smith International, Inc. Hole opener with improved rotary cutter mounting
US4126195A (en) * 1977-02-17 1978-11-21 Smith International, Inc. Replaceable wear pad for a rock bit cutter yoke
US4089382A (en) * 1977-04-04 1978-05-16 Hughes Tool Company Cutter mounting for a large hole earth boring bit
US4241799A (en) * 1979-10-17 1980-12-30 Hughes Tool Company Protected cutter mounting for drill bits
US4760890A (en) * 1987-05-18 1988-08-02 Tamrock Inc. Cutter assembly for rotary boring of earth
US6131676A (en) * 1997-10-06 2000-10-17 Excavation Engineering Associates, Inc. Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters
US6708786B2 (en) * 2001-05-08 2004-03-23 Smith International, Inc. Mounting attachment and bearing system for an industrial earth-boring cutter
WO2009042189A2 (en) * 2007-09-25 2009-04-02 Caterpillar Inc. Rotary cutter for tunnel boring machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812681A (en) * 1929-02-13 1931-06-30 Brauer Walter Key bushing for rock-bit reamer pins
US2187037A (en) * 1939-06-09 1940-01-16 Lafayette H Kirkpatrick Well tool or the like
US3054466A (en) * 1959-09-21 1962-09-18 Drilprodco Inc Roller assemblies
US3203492A (en) * 1963-01-14 1965-08-31 Dresser Ind Large hole earth boring drill bit
US3216513A (en) * 1964-01-06 1965-11-09 Robbins & Assoc James S Cutter assemblies for rock drilling
FR1553002A (en) * 1967-11-17 1969-01-10
US3601207A (en) * 1969-05-19 1971-08-24 Lawrence Mfg Co Cutter assembly
US3633691A (en) * 1970-03-09 1972-01-11 Dresser Ind Large-diameter earth boring bit
US3627068A (en) * 1970-03-13 1971-12-14 Drilprodco Inc Adjustable reamer or roller assembly
US3658141A (en) * 1970-04-23 1972-04-25 Murphy Ind Inc G W Drill bit
US3612196A (en) * 1970-05-01 1971-10-12 Smith International Rock-boring cutter

Also Published As

Publication number Publication date
US3750772A (en) 1973-08-07
AU3727571A (en) 1973-06-28
ZM19171A1 (en) 1972-07-21
CA946429A (en) 1974-04-30
AU441543B2 (en) 1973-11-01

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