JPH0446182U - - Google Patents

Info

Publication number
JPH0446182U
JPH0446182U JP8759690U JP8759690U JPH0446182U JP H0446182 U JPH0446182 U JP H0446182U JP 8759690 U JP8759690 U JP 8759690U JP 8759690 U JP8759690 U JP 8759690U JP H0446182 U JPH0446182 U JP H0446182U
Authority
JP
Japan
Prior art keywords
roller
apex
excavation tips
shaped
apex portion
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.)
Granted
Application number
JP8759690U
Other languages
English (en)
Japanese (ja)
Other versions
JP2508128Y2 (ja
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 filed Critical
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 true JPH0446182U (enrdf_load_stackoverflow) 1992-04-20
JP2508128Y2 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 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JP2508128Y2 (ja) 1996-08-21

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