JPS53114703A - Large diameter drilled hole and taper drilled hole device by rock drill - Google Patents

Large diameter drilled hole and taper drilled hole device by rock drill

Info

Publication number
JPS53114703A
JPS53114703A JP2992177A JP2992177A JPS53114703A JP S53114703 A JPS53114703 A JP S53114703A JP 2992177 A JP2992177 A JP 2992177A JP 2992177 A JP2992177 A JP 2992177A JP S53114703 A JPS53114703 A JP S53114703A
Authority
JP
Japan
Prior art keywords
drilled hole
taper
large diameter
rock drill
hole device
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.)
Pending
Application number
JP2992177A
Other languages
Japanese (ja)
Inventor
Toyoshige Teranishi
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 JP2992177A priority Critical patent/JPS53114703A/en
Publication of JPS53114703A publication Critical patent/JPS53114703A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP2992177A 1977-03-18 1977-03-18 Large diameter drilled hole and taper drilled hole device by rock drill Pending JPS53114703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2992177A JPS53114703A (en) 1977-03-18 1977-03-18 Large diameter drilled hole and taper drilled hole device by rock drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2992177A JPS53114703A (en) 1977-03-18 1977-03-18 Large diameter drilled hole and taper drilled hole device by rock drill

Publications (1)

Publication Number Publication Date
JPS53114703A true JPS53114703A (en) 1978-10-06

Family

ID=12289447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2992177A Pending JPS53114703A (en) 1977-03-18 1977-03-18 Large diameter drilled hole and taper drilled hole device by rock drill

Country Status (1)

Country Link
JP (1) JPS53114703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003053724A (en) * 2001-08-17 2003-02-26 Furukawa Co Ltd Supporting device for polygonal rod of drilling machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003053724A (en) * 2001-08-17 2003-02-26 Furukawa Co Ltd Supporting device for polygonal rod of drilling machine

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