JPS6021122Y2 - 切抜廃板の落下防止機構付コアドリル - Google Patents

切抜廃板の落下防止機構付コアドリル

Info

Publication number
JPS6021122Y2
JPS6021122Y2 JP814680U JP814680U JPS6021122Y2 JP S6021122 Y2 JPS6021122 Y2 JP S6021122Y2 JP 814680 U JP814680 U JP 814680U JP 814680 U JP814680 U JP 814680U JP S6021122 Y2 JPS6021122 Y2 JP S6021122Y2
Authority
JP
Japan
Prior art keywords
annular groove
drill
stopper ring
cut
center
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
JP814680U
Other languages
English (en)
Japanese (ja)
Other versions
JPS56109810U (enrdf_load_stackoverflow
Inventor
昌明 宮永
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.)
Individual
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
Application filed by Individual filed Critical Individual
Priority to JP814680U priority Critical patent/JPS6021122Y2/ja
Publication of JPS56109810U publication Critical patent/JPS56109810U/ja
Application granted granted Critical
Publication of JPS6021122Y2 publication Critical patent/JPS6021122Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)
JP814680U 1980-01-26 1980-01-26 切抜廃板の落下防止機構付コアドリル Expired JPS6021122Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP814680U JPS6021122Y2 (ja) 1980-01-26 1980-01-26 切抜廃板の落下防止機構付コアドリル

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP814680U JPS6021122Y2 (ja) 1980-01-26 1980-01-26 切抜廃板の落下防止機構付コアドリル

Publications (2)

Publication Number Publication Date
JPS56109810U JPS56109810U (enrdf_load_stackoverflow) 1981-08-25
JPS6021122Y2 true JPS6021122Y2 (ja) 1985-06-24

Family

ID=29604827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP814680U Expired JPS6021122Y2 (ja) 1980-01-26 1980-01-26 切抜廃板の落下防止機構付コアドリル

Country Status (1)

Country Link
JP (1) JPS6021122Y2 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116211U (ja) * 1984-06-29 1986-01-30 株式会社 ブレスト工業研究所 ホ−ルソ−
JP6438676B2 (ja) * 2014-05-12 2018-12-19 株式会社竹中工務店 コンクリート部材切断装置

Also Published As

Publication number Publication date
JPS56109810U (enrdf_load_stackoverflow) 1981-08-25

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