CA2257934A1 - Element d'outil de coupe concu pour resister a l'effort de traction - Google Patents

Element d'outil de coupe concu pour resister a l'effort de traction

Info

Publication number
CA2257934A1
CA2257934A1 CA002257934A CA2257934A CA2257934A1 CA 2257934 A1 CA2257934 A1 CA 2257934A1 CA 002257934 A CA002257934 A CA 002257934A CA 2257934 A CA2257934 A CA 2257934A CA 2257934 A1 CA2257934 A1 CA 2257934A1
Authority
CA
Canada
Prior art keywords
cutter element
present
trailing
tensile stress
cutters
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.)
Granted
Application number
CA002257934A
Other languages
English (en)
Other versions
CA2257934C (fr
Inventor
Gary Ray Portwood
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
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
Priority claimed from US08/668,109 external-priority patent/US5813485A/en
Application filed by Individual filed Critical Individual
Publication of CA2257934A1 publication Critical patent/CA2257934A1/fr
Application granted granted Critical
Publication of CA2257934C publication Critical patent/CA2257934C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
CA002257934A 1996-06-21 1997-06-19 Element d'outil de coupe concu pour resister a l'effort de traction Expired - Fee Related CA2257934C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/668,109 US5813485A (en) 1996-06-21 1996-06-21 Cutter element adapted to withstand tensile stress
US08/668,109 1996-06-21
PCT/US1997/010714 WO1997048877A1 (fr) 1996-06-21 1997-06-19 Element d'outil de coupe conçu pour resister a l'effort de traction

Publications (2)

Publication Number Publication Date
CA2257934A1 true CA2257934A1 (fr) 1997-12-24
CA2257934C CA2257934C (fr) 2005-12-20

Family

ID=35645851

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002257934A Expired - Fee Related CA2257934C (fr) 1996-06-21 1997-06-19 Element d'outil de coupe concu pour resister a l'effort de traction

Country Status (1)

Country Link
CA (1) CA2257934C (fr)

Also Published As

Publication number Publication date
CA2257934C (fr) 2005-12-20

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160620