JP2508128Y2 - ロ―ラカッタ - Google Patents

ロ―ラカッタ

Info

Publication number
JP2508128Y2
JP2508128Y2 JP8759690U JP8759690U JP2508128Y2 JP 2508128 Y2 JP2508128 Y2 JP 2508128Y2 JP 8759690 U JP8759690 U JP 8759690U JP 8759690 U JP8759690 U JP 8759690U JP 2508128 Y2 JP2508128 Y2 JP 2508128Y2
Authority
JP
Japan
Prior art keywords
apex angle
cutter
circumferential direction
drilling tip
roller cutter
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 - Fee Related
Application number
JP8759690U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0446182U (enExample
Inventor
勇喜男 田中
直 小林
Original Assignee
東芝タンガロイ株式会社
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 東芝タンガロイ株式会社 filed Critical 東芝タンガロイ株式会社
Priority to JP8759690U priority Critical patent/JP2508128Y2/ja
Publication of JPH0446182U publication Critical patent/JPH0446182U/ja
Application granted granted Critical
Publication of JP2508128Y2 publication Critical patent/JP2508128Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
JP8759690U 1990-08-22 1990-08-22 ロ―ラカッタ Expired - Fee Related JP2508128Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8759690U JP2508128Y2 (ja) 1990-08-22 1990-08-22 ロ―ラカッタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8759690U JP2508128Y2 (ja) 1990-08-22 1990-08-22 ロ―ラカッタ

Publications (2)

Publication Number Publication Date
JPH0446182U JPH0446182U (enExample) 1992-04-20
JP2508128Y2 true JP2508128Y2 (ja) 1996-08-21

Family

ID=31820075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8759690U Expired - Fee Related JP2508128Y2 (ja) 1990-08-22 1990-08-22 ロ―ラカッタ

Country Status (1)

Country Link
JP (1) JP2508128Y2 (enExample)

Also Published As

Publication number Publication date
JPH0446182U (enExample) 1992-04-20

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees