JPH0418115B2 - - Google Patents

Info

Publication number
JPH0418115B2
JPH0418115B2 JP20780084A JP20780084A JPH0418115B2 JP H0418115 B2 JPH0418115 B2 JP H0418115B2 JP 20780084 A JP20780084 A JP 20780084A JP 20780084 A JP20780084 A JP 20780084A JP H0418115 B2 JPH0418115 B2 JP H0418115B2
Authority
JP
Japan
Prior art keywords
cooling water
bit
core
cover
cover body
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
JP20780084A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6187093A (ja
Inventor
Takatoshi Ueno
Kazunori Mitsuyama
Yoshikazu Abe
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.)
Shimizu Construction Co Ltd
Original Assignee
Shimizu Construction Co Ltd
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 Shimizu Construction Co Ltd filed Critical Shimizu Construction Co Ltd
Priority to JP20780084A priority Critical patent/JPS6187093A/ja
Publication of JPS6187093A publication Critical patent/JPS6187093A/ja
Publication of JPH0418115B2 publication Critical patent/JPH0418115B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP20780084A 1984-10-03 1984-10-03 穿孔機の冷却水飛散防止装置 Granted JPS6187093A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20780084A JPS6187093A (ja) 1984-10-03 1984-10-03 穿孔機の冷却水飛散防止装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20780084A JPS6187093A (ja) 1984-10-03 1984-10-03 穿孔機の冷却水飛散防止装置

Publications (2)

Publication Number Publication Date
JPS6187093A JPS6187093A (ja) 1986-05-02
JPH0418115B2 true JPH0418115B2 (enrdf_load_stackoverflow) 1992-03-26

Family

ID=16545701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20780084A Granted JPS6187093A (ja) 1984-10-03 1984-10-03 穿孔機の冷却水飛散防止装置

Country Status (1)

Country Link
JP (1) JPS6187093A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4806458B2 (ja) * 2009-06-08 2011-11-02 株式会社呉英製作所 工具ガイド機構および深穴明機
CN110742672B (zh) * 2019-11-28 2021-08-31 张兴卷 一种用于骨组织手术的安全系数高的钻孔装置

Also Published As

Publication number Publication date
JPS6187093A (ja) 1986-05-02

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