JPS61242300A - かくれチツプを備えた切削用円筒管 - Google Patents

かくれチツプを備えた切削用円筒管

Info

Publication number
JPS61242300A
JPS61242300A JP8200685A JP8200685A JPS61242300A JP S61242300 A JPS61242300 A JP S61242300A JP 8200685 A JP8200685 A JP 8200685A JP 8200685 A JP8200685 A JP 8200685A JP S61242300 A JPS61242300 A JP S61242300A
Authority
JP
Japan
Prior art keywords
cutting
tip
hidden
tube
cylindrical tube
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
JP8200685A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0350880B2 (enExample
Inventor
鷹巣　征行
幸一 原
花田　正紀
久雄 竹内
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.)
Tokyu Construction Co Ltd
Koken Boring Machine Co Ltd
Original Assignee
Tokyu Construction Co Ltd
Koken Boring Machine Co Ltd
Koken Sisui Kogyo KK
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 Tokyu Construction Co Ltd, Koken Boring Machine Co Ltd, Koken Sisui Kogyo KK filed Critical Tokyu Construction Co Ltd
Priority to JP8200685A priority Critical patent/JPS61242300A/ja
Publication of JPS61242300A publication Critical patent/JPS61242300A/ja
Publication of JPH0350880B2 publication Critical patent/JPH0350880B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
JP8200685A 1985-04-17 1985-04-17 かくれチツプを備えた切削用円筒管 Granted JPS61242300A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8200685A JPS61242300A (ja) 1985-04-17 1985-04-17 かくれチツプを備えた切削用円筒管

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8200685A JPS61242300A (ja) 1985-04-17 1985-04-17 かくれチツプを備えた切削用円筒管

Publications (2)

Publication Number Publication Date
JPS61242300A true JPS61242300A (ja) 1986-10-28
JPH0350880B2 JPH0350880B2 (enExample) 1991-08-05

Family

ID=13762437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8200685A Granted JPS61242300A (ja) 1985-04-17 1985-04-17 かくれチツプを備えた切削用円筒管

Country Status (1)

Country Link
JP (1) JPS61242300A (enExample)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677596U (enExample) * 1979-11-15 1981-06-24
JPS6023591A (ja) * 1983-07-19 1985-02-06 株式会社利根ボ−リング コアボ−リング用ドリルビツト

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677596U (enExample) * 1979-11-15 1981-06-24
JPS6023591A (ja) * 1983-07-19 1985-02-06 株式会社利根ボ−リング コアボ−リング用ドリルビツト

Also Published As

Publication number Publication date
JPH0350880B2 (enExample) 1991-08-05

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