FR1245218A - Tension device for roll-up projection screens - Google Patents

Tension device for roll-up projection screens

Info

Publication number
FR1245218A
FR1245218A FR815512A FR815512A FR1245218A FR 1245218 A FR1245218 A FR 1245218A FR 815512 A FR815512 A FR 815512A FR 815512 A FR815512 A FR 815512A FR 1245218 A FR1245218 A FR 1245218A
Authority
FR
France
Prior art keywords
roll
tension device
projection screens
screens
projection
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.)
Expired
Application number
FR815512A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 by Agfa AG filed Critical Agfa AG
Application granted granted Critical
Publication of FR1245218A publication Critical patent/FR1245218A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
FR815512A 1959-01-22 1960-01-13 Tension device for roll-up projection screens Expired FR1245218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA31169A DE1108468B (en) 1959-01-22 1959-01-22 Clamping device for rollable projection walls

Publications (1)

Publication Number Publication Date
FR1245218A true FR1245218A (en) 1960-11-04

Family

ID=6927430

Family Applications (1)

Application Number Title Priority Date Filing Date
FR815512A Expired FR1245218A (en) 1959-01-22 1960-01-13 Tension device for roll-up projection screens

Country Status (2)

Country Link
DE (1) DE1108468B (en)
FR (1) FR1245218A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE717034C (en) * 1940-07-30 1942-02-04 Filmosto Projektion Projection screen

Also Published As

Publication number Publication date
DE1108468B (en) 1961-06-08

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