SE8501264D0 - CLEARABLE PROJECTS - Google Patents

CLEARABLE PROJECTS

Info

Publication number
SE8501264D0
SE8501264D0 SE8501264A SE8501264A SE8501264D0 SE 8501264 D0 SE8501264 D0 SE 8501264D0 SE 8501264 A SE8501264 A SE 8501264A SE 8501264 A SE8501264 A SE 8501264A SE 8501264 D0 SE8501264 D0 SE 8501264D0
Authority
SE
Sweden
Prior art keywords
pieces
frame
clearable
projects
secured
Prior art date
Application number
SE8501264A
Other languages
Swedish (sv)
Other versions
SE444734B (en
SE8501264L (en
Inventor
S Frannung
Original Assignee
Calibrator Ab
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 Calibrator Ab filed Critical Calibrator Ab
Priority to SE8501264A priority Critical patent/SE8501264L/en
Publication of SE8501264D0 publication Critical patent/SE8501264D0/en
Publication of SE444734B publication Critical patent/SE444734B/en
Publication of SE8501264L publication Critical patent/SE8501264L/en

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

Abstract

The invention concerns a foldable projection cover with a frame which involves two U-shaped end-frame parts (10) which each consist of an end-piece (11) and two side-pieces (12), and two intermediary side-pieces, between the end-frame parts' side-pieces, which are secured as upward side-frame pieces (29). At one of its ends, the screen (19) is secured in one of the end-frames' end-pieces, which retains a rotational roller element (18) and at its other end, in a band (23) at the other end-frame's end-piece which is spring-loaded for stretching the screen.<IMAGE>
SE8501264A 1985-03-14 1985-03-14 CLEARABLE PROJECTS SE8501264L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8501264A SE8501264L (en) 1985-03-14 1985-03-14 CLEARABLE PROJECTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8501264A SE8501264L (en) 1985-03-14 1985-03-14 CLEARABLE PROJECTS

Publications (3)

Publication Number Publication Date
SE8501264D0 true SE8501264D0 (en) 1985-03-14
SE444734B SE444734B (en) 1986-04-28
SE8501264L SE8501264L (en) 1986-04-28

Family

ID=20359498

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8501264A SE8501264L (en) 1985-03-14 1985-03-14 CLEARABLE PROJECTS

Country Status (1)

Country Link
SE (1) SE8501264L (en)

Also Published As

Publication number Publication date
SE444734B (en) 1986-04-28
SE8501264L (en) 1986-04-28

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