JPH0750470Y2 - 回転穿孔具 - Google Patents

回転穿孔具

Info

Publication number
JPH0750470Y2
JPH0750470Y2 JP13615489U JP13615489U JPH0750470Y2 JP H0750470 Y2 JPH0750470 Y2 JP H0750470Y2 JP 13615489 U JP13615489 U JP 13615489U JP 13615489 U JP13615489 U JP 13615489U JP H0750470 Y2 JPH0750470 Y2 JP H0750470Y2
Authority
JP
Japan
Prior art keywords
inner cylinder
adapter
peripheral surface
cylinder
tip
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 - Lifetime
Application number
JP13615489U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0376089U (en]
Inventor
勝平 大見
Original Assignee
大見工業株式会社
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 大見工業株式会社 filed Critical 大見工業株式会社
Priority to JP13615489U priority Critical patent/JPH0750470Y2/ja
Priority to EP90312600A priority patent/EP0430536B1/en
Priority to DE69007241T priority patent/DE69007241T2/de
Priority to US07/616,318 priority patent/US5092716A/en
Publication of JPH0376089U publication Critical patent/JPH0376089U/ja
Application granted granted Critical
Publication of JPH0750470Y2 publication Critical patent/JPH0750470Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP13615489U 1989-11-25 1989-11-25 回転穿孔具 Expired - Lifetime JPH0750470Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13615489U JPH0750470Y2 (ja) 1989-11-25 1989-11-25 回転穿孔具
EP90312600A EP0430536B1 (en) 1989-11-25 1990-11-20 Drill
DE69007241T DE69007241T2 (de) 1989-11-25 1990-11-20 Hohlbohrer.
US07/616,318 US5092716A (en) 1989-11-25 1990-11-21 Drill and method for using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13615489U JPH0750470Y2 (ja) 1989-11-25 1989-11-25 回転穿孔具

Publications (2)

Publication Number Publication Date
JPH0376089U JPH0376089U (en]) 1991-07-30
JPH0750470Y2 true JPH0750470Y2 (ja) 1995-11-15

Family

ID=31683378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13615489U Expired - Lifetime JPH0750470Y2 (ja) 1989-11-25 1989-11-25 回転穿孔具

Country Status (1)

Country Link
JP (1) JPH0750470Y2 (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114135234B (zh) * 2021-12-13 2022-08-16 河南黄河旋风股份有限公司 自适应收放水管的钻进系统

Also Published As

Publication number Publication date
JPH0376089U (en]) 1991-07-30

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