JPS622106B2 - - Google Patents

Info

Publication number
JPS622106B2
JPS622106B2 JP55061244A JP6124480A JPS622106B2 JP S622106 B2 JPS622106 B2 JP S622106B2 JP 55061244 A JP55061244 A JP 55061244A JP 6124480 A JP6124480 A JP 6124480A JP S622106 B2 JPS622106 B2 JP S622106B2
Authority
JP
Japan
Prior art keywords
cutter
conical
tip
bit
cutter 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
JP55061244A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56159497A (en
Inventor
Hiroshi Kusumi
Yasuaki Ishikawa
Shuichi Ajiro
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP6124480A priority Critical patent/JPS56159497A/ja
Publication of JPS56159497A publication Critical patent/JPS56159497A/ja
Publication of JPS622106B2 publication Critical patent/JPS622106B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP6124480A 1980-05-10 1980-05-10 Excavating bit Granted JPS56159497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6124480A JPS56159497A (en) 1980-05-10 1980-05-10 Excavating bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6124480A JPS56159497A (en) 1980-05-10 1980-05-10 Excavating bit

Publications (2)

Publication Number Publication Date
JPS56159497A JPS56159497A (en) 1981-12-08
JPS622106B2 true JPS622106B2 (cg-RX-API-DMAC7.html) 1987-01-17

Family

ID=13165620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6124480A Granted JPS56159497A (en) 1980-05-10 1980-05-10 Excavating bit

Country Status (1)

Country Link
JP (1) JPS56159497A (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183420A (ja) * 2018-04-03 2019-10-24 鉄建建設株式会社 ドリルヘッド、ドリル掘削機及び掘削孔の構築方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623411Y2 (cg-RX-API-DMAC7.html) * 1973-07-16 1981-06-02

Also Published As

Publication number Publication date
JPS56159497A (en) 1981-12-08

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