CA961481A - Drilling head - Google Patents

Drilling head

Info

Publication number
CA961481A
CA961481A CA118,953A CA118953A CA961481A CA 961481 A CA961481 A CA 961481A CA 118953 A CA118953 A CA 118953A CA 961481 A CA961481 A CA 961481A
Authority
CA
Canada
Prior art keywords
drilling head
drilling
head
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
CA118,953A
Other versions
CA118953S (en
Inventor
Donald M. Dewar
James Wilseck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA961481A publication Critical patent/CA961481A/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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
CA118,953A 1970-07-24 1971-07-23 Drilling head Expired CA961481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5811470A 1970-07-24 1970-07-24

Publications (1)

Publication Number Publication Date
CA961481A true CA961481A (en) 1975-01-21

Family

ID=22014771

Family Applications (1)

Application Number Title Priority Date Filing Date
CA118,953A Expired CA961481A (en) 1970-07-24 1971-07-23 Drilling head

Country Status (2)

Country Link
US (1) US3710879A (en)
CA (1) CA961481A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050211282A1 (en) * 2004-03-26 2005-09-29 Devenezia Cecilia Auger-anchored beach umbrella

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332179A (en) * 1885-12-08 Device for loosening sugar
US1547459A (en) * 1923-12-22 1925-07-28 George A Stafford Drill
US1861928A (en) * 1930-01-30 1932-06-07 Leo J Loeffelman Expansion cutter
US2320612A (en) * 1941-06-27 1943-06-01 Charles W Kandle Earth boring tool
US2575239A (en) * 1950-06-13 1951-11-13 Marathon Coal Bit Company Inc Reversible bit and holder therefor
US2887300A (en) * 1957-01-23 1959-05-19 Amalgamated Equipment Co Reamer attachment for earth augers
US3326306A (en) * 1964-09-02 1967-06-20 Basial B Weir Water spade

Also Published As

Publication number Publication date
US3710879A (en) 1973-01-16

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