JPS61105512U - - Google Patents

Info

Publication number
JPS61105512U
JPS61105512U JP18971784U JP18971784U JPS61105512U JP S61105512 U JPS61105512 U JP S61105512U JP 18971784 U JP18971784 U JP 18971784U JP 18971784 U JP18971784 U JP 18971784U JP S61105512 U JPS61105512 U JP S61105512U
Authority
JP
Japan
Prior art keywords
bit
center
center bit
narrow diameter
cutter blade
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
JP18971784U
Other languages
English (en)
Other versions
JPS6346180Y2 (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 JP18971784U priority Critical patent/JPS6346180Y2/ja
Publication of JPS61105512U publication Critical patent/JPS61105512U/ja
Application granted granted Critical
Publication of JPS6346180Y2 publication Critical patent/JPS6346180Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】
添付図面は、この考案の一実施例並びに穿孔作
業要領を示すものであつて、第1図は本管への施
工作業要領を示す一部断面図、第2図はセンター
ビツトをカツター刃へ取り付けた状態を示す斜視
図、第3図はカツター刃並びにセンタービツトの
各構成部材の組合せ状態を示す斜視図、第4図は
センタービツト並びに筒体を示す斜視図、第5図
はセンタービツトによる切取り片の保持状態を示
す斜視図である。 2……カツター刃、3……センタービツト、4
……細径部、6……切り割り部、7……筒体。

Claims (1)

    【実用新案登録請求の範囲】
  1. 円形状のカツター刃2の中心部に装着させるセ
    ンタービツト3において、そのセンタービツト3
    の軸部に段落状の細径部4を形成するとともに、
    該細径部4に、その胴部においてビツトの径より
    も太く、かつ、その側部に切り割り部6を形成し
    た形の筒体7を装着したことを特徴とするセンタ
    ービツトの構造。
JP18971784U 1984-12-13 1984-12-13 Expired JPS6346180Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18971784U JPS6346180Y2 (ja) 1984-12-13 1984-12-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18971784U JPS6346180Y2 (ja) 1984-12-13 1984-12-13

Publications (2)

Publication Number Publication Date
JPS61105512U true JPS61105512U (ja) 1986-07-04
JPS6346180Y2 JPS6346180Y2 (ja) 1988-12-01

Family

ID=30747164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18971784U Expired JPS6346180Y2 (ja) 1984-12-13 1984-12-13

Country Status (1)

Country Link
JP (1) JPS6346180Y2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274113U (ja) * 1988-11-29 1990-06-06
JP2006247811A (ja) * 2005-03-14 2006-09-21 Tabuchi Corp 水道配管の穿孔カッター

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274113U (ja) * 1988-11-29 1990-06-06
JP2006247811A (ja) * 2005-03-14 2006-09-21 Tabuchi Corp 水道配管の穿孔カッター

Also Published As

Publication number Publication date
JPS6346180Y2 (ja) 1988-12-01

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