JPH0447757B2 - - Google Patents

Info

Publication number
JPH0447757B2
JPH0447757B2 JP20779984A JP20779984A JPH0447757B2 JP H0447757 B2 JPH0447757 B2 JP H0447757B2 JP 20779984 A JP20779984 A JP 20779984A JP 20779984 A JP20779984 A JP 20779984A JP H0447757 B2 JPH0447757 B2 JP H0447757B2
Authority
JP
Japan
Prior art keywords
core bit
steady rest
core
attached
main 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
JP20779984A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6187091A (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 JP20779984A priority Critical patent/JPS6187091A/ja
Publication of JPS6187091A publication Critical patent/JPS6187091A/ja
Publication of JPH0447757B2 publication Critical patent/JPH0447757B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP20779984A 1984-10-03 1984-10-03 コアボ−リング機のコアビツト振れ止め装置 Granted JPS6187091A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20779984A JPS6187091A (ja) 1984-10-03 1984-10-03 コアボ−リング機のコアビツト振れ止め装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20779984A JPS6187091A (ja) 1984-10-03 1984-10-03 コアボ−リング機のコアビツト振れ止め装置

Publications (2)

Publication Number Publication Date
JPS6187091A JPS6187091A (ja) 1986-05-02
JPH0447757B2 true JPH0447757B2 (enrdf_load_stackoverflow) 1992-08-04

Family

ID=16545682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20779984A Granted JPS6187091A (ja) 1984-10-03 1984-10-03 コアボ−リング機のコアビツト振れ止め装置

Country Status (1)

Country Link
JP (1) JPS6187091A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5015223B2 (ja) * 2009-10-30 2012-08-29 第一建設工業株式会社 不要水飛散防止装置，削孔装置及び削孔方法

Also Published As

Publication number Publication date
JPS6187091A (ja) 1986-05-02

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