CA677580A - Indicator device for bearing failures in drill bits - Google Patents

Indicator device for bearing failures in drill bits

Info

Publication number
CA677580A
CA677580A CA677580A CA677580DA CA677580A CA 677580 A CA677580 A CA 677580A CA 677580 A CA677580 A CA 677580A CA 677580D A CA677580D A CA 677580DA CA 677580 A CA677580 A CA 677580A
Authority
CA
Canada
Prior art keywords
drill bits
indicator device
bearing failures
failures
bearing
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
CA677580A
Inventor
F. Toomey David
J. Toth Frederick
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.)
Shell USA Inc
Original Assignee
David F Toomey
Frederick J Toth
Shell Oil Co
Publication date
Application granted granted Critical
Publication of CA677580A publication Critical patent/CA677580A/en
Expired legal-status Critical Current

Links

CA677580A Indicator device for bearing failures in drill bits Expired CA677580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA677580T

Publications (1)

Publication Number Publication Date
CA677580A true CA677580A (en) 1964-01-07

Family

ID=35978666

Family Applications (1)

Application Number Title Priority Date Filing Date
CA677580A Expired CA677580A (en) Indicator device for bearing failures in drill bits

Country Status (1)

Country Link
CA (1) CA677580A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548280A (en) * 1984-02-15 1985-10-22 Reed Rock Bit Company Drill bit having a failure indicator
US4610313A (en) * 1984-02-15 1986-09-09 Reed Tool Company Drill bit having a failure indicator
US4688647A (en) * 1984-02-15 1987-08-25 Reed Tool Company Drill bit having a failure indicator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548280A (en) * 1984-02-15 1985-10-22 Reed Rock Bit Company Drill bit having a failure indicator
US4610313A (en) * 1984-02-15 1986-09-09 Reed Tool Company Drill bit having a failure indicator
US4688647A (en) * 1984-02-15 1987-08-25 Reed Tool Company Drill bit having a failure indicator

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