JPH0286707U - - Google Patents

Info

Publication number
JPH0286707U
JPH0286707U JP16803188U JP16803188U JPH0286707U JP H0286707 U JPH0286707 U JP H0286707U JP 16803188 U JP16803188 U JP 16803188U JP 16803188 U JP16803188 U JP 16803188U JP H0286707 U JPH0286707 U JP H0286707U
Authority
JP
Japan
Prior art keywords
expansion tube
rubber
rubber expansion
tube
rigid pipe
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
JP16803188U
Other languages
English (en)
Other versions
JPH0523284Y2 (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 JP16803188U priority Critical patent/JPH0523284Y2/ja
Publication of JPH0286707U publication Critical patent/JPH0286707U/ja
Application granted granted Critical
Publication of JPH0523284Y2 publication Critical patent/JPH0523284Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moulds, Cores, Or Mandrels (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例である孔成形用ゴム
型の要部断面図であり、第２図はコンクリート成
形体の一例を示す斜視図、第３図は第２図のコン
クリート成形体に孔を形成する方法の説明図、第
４図は第３図のゴム型の構造を示す一部切欠正面
図である。 １０：孔成形用ゴム型、１４：ゴム膨張管、１
８：口金、２２：栓体、２６：金属パイプ、２８
，３０：分割管。

Claims (1)

  1. 【実用新案登録請求の範囲】 内部に導かれた流体の圧力によつて拡径するゴ
    ム膨張管と、該ゴム膨張管内に挿入されて一端が
    該ゴム膨張管の先端部に、他端が該ゴム膨張管の
    基端部に夫々固定された芯体としての剛性パイプ
    とを備えた孔成形用ゴム型であつて、 前記剛性パイプが所定部位で軸方向に分割され
    た形態を成し且つ該分割部分において、少なくと
    も該ゴム膨張管の膨張・収縮に基づく長さ変化に
    対応する量だけ軸方向にスライド可能に重ね合さ
    れていることを特徴とする孔成形用ゴム型。
JP16803188U 1988-12-26 1988-12-26 Expired - Lifetime JPH0523284Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16803188U JPH0523284Y2 (ja) 1988-12-26 1988-12-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16803188U JPH0523284Y2 (ja) 1988-12-26 1988-12-26

Publications (2)

Publication Number Publication Date
JPH0286707U true JPH0286707U (ja) 1990-07-10
JPH0523284Y2 JPH0523284Y2 (ja) 1993-06-15

Family

ID=31456854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16803188U Expired - Lifetime JPH0523284Y2 (ja) 1988-12-26 1988-12-26

Country Status (1)

Country Link
JP (1) JPH0523284Y2 (ja)

Also Published As

Publication number Publication date
JPH0523284Y2 (ja) 1993-06-15

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