JPS61203733U - - Google Patents

Info

Publication number
JPS61203733U
JPS61203733U JP8777885U JP8777885U JPS61203733U JP S61203733 U JPS61203733 U JP S61203733U JP 8777885 U JP8777885 U JP 8777885U JP 8777885 U JP8777885 U JP 8777885U JP S61203733 U JPS61203733 U JP S61203733U
Authority
JP
Japan
Prior art keywords
spring
looseness
reinforces
momentum
rolled
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
JP8777885U
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 JP8777885U priority Critical patent/JPS61203733U/ja
Publication of JPS61203733U publication Critical patent/JPS61203733U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)

Description

【図面の簡単な説明】
第1図は本考案スブリングローラー巻き取り式
バツクスクリーンの正面図であり、2枚付けの例
である。第2図はその右側面図である。

Claims (1)

    【実用新案登録請求の範囲】
  1. スプリングローラー巻き取りによる複数枚の写
    真バツクスクリーンが、随意に出る装置とそのた
    めのスプリングのゆるみを補強する歯車装置、ま
    たスプリングのはずみによる空転を防止するため
    の磁石利用による停止装置。
JP8777885U 1985-06-11 1985-06-11 Pending JPS61203733U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8777885U JPS61203733U (ja) 1985-06-11 1985-06-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8777885U JPS61203733U (ja) 1985-06-11 1985-06-11

Publications (1)

Publication Number Publication Date
JPS61203733U true JPS61203733U (ja) 1986-12-22

Family

ID=30640308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8777885U Pending JPS61203733U (ja) 1985-06-11 1985-06-11

Country Status (1)

Country Link
JP (1) JPS61203733U (ja)

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