CA1236083A - Marteau piqueur, et ses elements - Google Patents

Marteau piqueur, et ses elements

Info

Publication number
CA1236083A
CA1236083A CA000477688A CA477688A CA1236083A CA 1236083 A CA1236083 A CA 1236083A CA 000477688 A CA000477688 A CA 000477688A CA 477688 A CA477688 A CA 477688A CA 1236083 A CA1236083 A CA 1236083A
Authority
CA
Canada
Prior art keywords
lowermost
cutting
extending
drill bit
central opening
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
CA000477688A
Other languages
English (en)
Inventor
Oscar E. Farris
Larry C. Nielsen
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.)
Layne Christensen Co
Becker Drills Inc
Original Assignee
Becker Drills 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 Becker Drills Inc filed Critical Becker Drills Inc
Application granted granted Critical
Publication of CA1236083A publication Critical patent/CA1236083A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
CA000477688A 1984-04-02 1985-03-27 Marteau piqueur, et ses elements Expired CA1236083A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59583884A 1984-04-02 1984-04-02
US595,838 1984-04-02

Publications (1)

Publication Number Publication Date
CA1236083A true CA1236083A (fr) 1988-05-03

Family

ID=24384884

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000477688A Expired CA1236083A (fr) 1984-04-02 1985-03-27 Marteau piqueur, et ses elements

Country Status (1)

Country Link
CA (1) CA1236083A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404889A (en) * 2003-08-12 2005-02-16 Black & Decker Inc A cutting plate for a drill bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404889A (en) * 2003-08-12 2005-02-16 Black & Decker Inc A cutting plate for a drill bit
US7225890B2 (en) 2003-08-12 2007-06-05 Black & Decker Inc. Cutting plate for a drill bit

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Legal Events

Date Code Title Description
MKEX Expiry