CA1242463A - Trepan a molettes multiples - Google Patents

Trepan a molettes multiples

Info

Publication number
CA1242463A
CA1242463A CA000436921A CA436921A CA1242463A CA 1242463 A CA1242463 A CA 1242463A CA 000436921 A CA000436921 A CA 000436921A CA 436921 A CA436921 A CA 436921A CA 1242463 A CA1242463 A CA 1242463A
Authority
CA
Canada
Prior art keywords
insert
cutting edge
bit
inserts
clearance face
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
CA000436921A
Other languages
English (en)
Inventor
Clyde G. Hutzell
Alex G. Mckenna
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.)
Kennametal Inc
Original Assignee
Kennametal 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 Kennametal Inc filed Critical Kennametal Inc
Application granted granted Critical
Publication of CA1242463A publication Critical patent/CA1242463A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
CA000436921A 1982-09-17 1983-09-16 Trepan a molettes multiples Expired CA1242463A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42431182A 1982-09-17 1982-09-17
US424,311 1982-09-17

Publications (1)

Publication Number Publication Date
CA1242463A true CA1242463A (fr) 1988-09-27

Family

ID=23682180

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000436921A Expired CA1242463A (fr) 1982-09-17 1983-09-16 Trepan a molettes multiples

Country Status (5)

Country Link
JP (1) JPS5972397A (fr)
CA (1) CA1242463A (fr)
IN (1) IN160174B (fr)
MX (1) MX157916A (fr)
ZA (1) ZA836826B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8418481D0 (en) * 1984-07-19 1984-08-22 Nl Petroleum Prod Rotary drill bits
JPH01164386U (fr) * 1988-05-10 1989-11-16
JPH02125008U (fr) * 1989-03-22 1990-10-15
JPH0750473Y2 (ja) * 1990-08-22 1995-11-15 東芝タンガロイ株式会社 コニカルビット
JP4622117B2 (ja) * 2001-02-20 2011-02-02 株式会社タンガロイ シールド掘削機用ビット

Also Published As

Publication number Publication date
IN160174B (fr) 1987-06-27
JPS5972397A (ja) 1984-04-24
MX157916A (es) 1988-12-19
JPS6160235B2 (fr) 1986-12-19
ZA836826B (en) 1984-10-31

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Legal Events

Date Code Title Description
MKEX Expiry