CA1121331A - Mode de fabrication de trepans - Google Patents

Mode de fabrication de trepans

Info

Publication number
CA1121331A
CA1121331A CA000358204A CA358204A CA1121331A CA 1121331 A CA1121331 A CA 1121331A CA 000358204 A CA000358204 A CA 000358204A CA 358204 A CA358204 A CA 358204A CA 1121331 A CA1121331 A CA 1121331A
Authority
CA
Canada
Prior art keywords
bit
bit body
rock
steel
weld
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
CA000358204A
Other languages
English (en)
Inventor
John F. Fischer
Elton R. Foor
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.)
Smith International Inc
Original Assignee
Smith International 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
Priority claimed from US05/818,144 external-priority patent/US4156123A/en
Application filed by Smith International Inc filed Critical Smith International Inc
Priority to CA000358204A priority Critical patent/CA1121331A/fr
Application granted granted Critical
Publication of CA1121331A publication Critical patent/CA1121331A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA000358204A 1977-07-22 1980-08-13 Mode de fabrication de trepans Expired CA1121331A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000358204A CA1121331A (fr) 1977-07-22 1980-08-13 Mode de fabrication de trepans

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US818,144 1977-07-22
US05/818,144 US4156123A (en) 1977-07-22 1977-07-22 Method for making rock bits
CA307,873A CA1101246A (fr) 1977-07-22 1978-07-21 Traduction non-disponible
CA000358204A CA1121331A (fr) 1977-07-22 1980-08-13 Mode de fabrication de trepans

Publications (1)

Publication Number Publication Date
CA1121331A true CA1121331A (fr) 1982-04-06

Family

ID=27165760

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000358204A Expired CA1121331A (fr) 1977-07-22 1980-08-13 Mode de fabrication de trepans

Country Status (1)

Country Link
CA (1) CA1121331A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry