CA983010A - Drill bit - Google Patents

Drill bit

Info

Publication number
CA983010A
CA983010A CA148,340A CA148340A CA983010A CA 983010 A CA983010 A CA 983010A CA 148340 A CA148340 A CA 148340A CA 983010 A CA983010 A CA 983010A
Authority
CA
Canada
Prior art keywords
drill bit
drill
bit
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
Application number
CA148,340A
Other versions
CA148340S (en
Inventor
Percy W. Schumacher (Jr.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GW Murphy Industries Inc
Original Assignee
GW Murphy Industries Inc
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 GW Murphy Industries Inc filed Critical GW Murphy Industries Inc
Application granted granted Critical
Publication of CA983010A publication Critical patent/CA983010A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
CA148,340A 1971-08-20 1972-07-31 Drill bit Expired CA983010A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17345171A 1971-08-20 1971-08-20

Publications (1)

Publication Number Publication Date
CA983010A true CA983010A (en) 1976-02-03

Family

ID=22632096

Family Applications (1)

Application Number Title Priority Date Filing Date
CA148,340A Expired CA983010A (en) 1971-08-20 1972-07-31 Drill bit

Country Status (7)

Country Link
US (1) US3749188A (en)
JP (1) JPS5310521B2 (en)
AU (1) AU460979B2 (en)
CA (1) CA983010A (en)
DE (1) DE2238978B2 (en)
SE (2) SE392499B (en)
ZA (1) ZA725246B (en)

Families Citing this family (13)

* 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
SE415994B (en) * 1975-01-27 1980-11-17 Sandvik Ab DEVICE FOR ROLL DRILL
DE2809951C3 (en) * 1978-03-08 1982-04-15 Mannesmann AG, 4000 Düsseldorf Boring head for tunnel boring machines
US4193637A (en) * 1978-08-07 1980-03-18 The Robbins Company Rotary cutterhead for an earth boring machine
USRE31511E (en) 1978-08-07 1984-01-31 The Robbins Company Rotary cutterhead for an earth boring machine
US4760890A (en) * 1987-05-18 1988-08-02 Tamrock Inc. Cutter assembly for rotary boring of earth
US5421422A (en) * 1993-11-19 1995-06-06 Boretec Inc Roller cutter mount for tunneling machine
US5487435A (en) * 1994-07-07 1996-01-30 Baker Hughes Incorporated Mounting system for raise and shaft cutters
AT413047B (en) 2002-01-23 2005-10-15 Voest Alpine Bergtechnik CARRIER FOR A FLYING CUTTING DISTANCE STORAGE
US8695732B2 (en) * 2008-09-16 2014-04-15 Stu Blattner Earth-boring cutter mount and assembly
CN104110262A (en) * 2014-07-21 2014-10-22 洛阳理工学院 Drilling and rolling combination cutter disc structure for TBM (tunnel boring machine)

Also Published As

Publication number Publication date
SE392499B (en) 1977-03-28
JPS5310521B2 (en) 1978-04-14
AU460979B2 (en) 1975-05-15
JPS4829601A (en) 1973-04-19
DE2238978B2 (en) 1978-03-09
ZA725246B (en) 1973-04-25
DE2238978A1 (en) 1973-03-29
SE7514252L (en) 1975-12-17
AU4514772A (en) 1974-02-07
US3749188A (en) 1973-07-31

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