JPH0438312U - - Google Patents

Info

Publication number
JPH0438312U
JPH0438312U JP8134090U JP8134090U JPH0438312U JP H0438312 U JPH0438312 U JP H0438312U JP 8134090 U JP8134090 U JP 8134090U JP 8134090 U JP8134090 U JP 8134090U JP H0438312 U JPH0438312 U JP H0438312U
Authority
JP
Japan
Prior art keywords
hole saw
center drill
hole
drill
saw
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
JP8134090U
Other languages
English (en)
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 JP8134090U priority Critical patent/JPH0438312U/ja
Publication of JPH0438312U publication Critical patent/JPH0438312U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】
第1図は本考案に係るホルソーの使用状態にお
ける要部を断面で示した側面図、第2図は同ホル
ソーによる穿孔後のホルソー引き上げ状況を示し
且つ要部を断面で示した側面図である。 1……ホルソー、2……基部、3,4a……刃
部、4……センタードリル、5……抜け出し防止
部材、6……溝部、7……水道管、8……小孔、
9……穴、10……切削片。

Claims (1)

    【実用新案登録請求の範囲】
  1. 既設配管に分水栓を取り付けるために管壁に所
    定の大きさの穴を穿けるためのホルソーであつて
    、該ホルソーの軸芯に沿つてセンタードリルを設
    け、該センタードリルの先端をホルソーの刃部よ
    りも所定長さ突出させると共に、センタードリル
    の略中間部に切削片の抜け出し防止部材を設けた
    ことを特徴とする水道管用ホルソー。
JP8134090U 1990-07-31 1990-07-31 Pending JPH0438312U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8134090U JPH0438312U (ja) 1990-07-31 1990-07-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8134090U JPH0438312U (ja) 1990-07-31 1990-07-31

Publications (1)

Publication Number Publication Date
JPH0438312U true JPH0438312U (ja) 1992-03-31

Family

ID=31627199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8134090U Pending JPH0438312U (ja) 1990-07-31 1990-07-31

Country Status (1)

Country Link
JP (1) JPH0438312U (ja)

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