CA1178462A - Projection screen assembly - Google Patents

Projection screen assembly

Info

Publication number
CA1178462A
CA1178462A CA000395386A CA395386A CA1178462A CA 1178462 A CA1178462 A CA 1178462A CA 000395386 A CA000395386 A CA 000395386A CA 395386 A CA395386 A CA 395386A CA 1178462 A CA1178462 A CA 1178462A
Authority
CA
Canada
Prior art keywords
screen
tensioning
lateral
lifting
elements
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
CA000395386A
Other languages
English (en)
French (fr)
Inventor
William C. Shaw
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.)
Imax Systems Corp
Original Assignee
Imax Systems Corp
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 Imax Systems Corp filed Critical Imax Systems Corp
Priority to CA000395386A priority Critical patent/CA1178462A/en
Priority to EP83300365A priority patent/EP0085527B1/en
Priority to AT83300365T priority patent/ATE24974T1/de
Priority to DE8383300365T priority patent/DE3369202D1/de
Priority to JP58016001A priority patent/JPS58154833A/ja
Application granted granted Critical
Publication of CA1178462A publication Critical patent/CA1178462A/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)
CA000395386A 1982-02-02 1982-02-02 Projection screen assembly Expired CA1178462A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA000395386A CA1178462A (en) 1982-02-02 1982-02-02 Projection screen assembly
EP83300365A EP0085527B1 (en) 1982-02-02 1983-01-25 Projection screen assembly
AT83300365T ATE24974T1 (de) 1982-02-02 1983-01-25 Projektionsschirm-aufbau.
DE8383300365T DE3369202D1 (en) 1982-02-02 1983-01-25 Projection screen assembly
JP58016001A JPS58154833A (ja) 1982-02-02 1983-02-02 映写スクリ−ンアセンブリ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000395386A CA1178462A (en) 1982-02-02 1982-02-02 Projection screen assembly

Publications (1)

Publication Number Publication Date
CA1178462A true CA1178462A (en) 1984-11-27

Family

ID=4121958

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000395386A Expired CA1178462A (en) 1982-02-02 1982-02-02 Projection screen assembly

Country Status (5)

Country Link
EP (1) EP0085527B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS58154833A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE24974T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1178462A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3369202D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154940U (ja) * 1984-03-26 1985-10-16 大日本印刷株式会社 透過型スクリ−ン
WO2005109092A1 (en) 2004-05-12 2005-11-17 Silas Creel Collapsible projection screen systems
JP5061986B2 (ja) * 2008-03-24 2012-10-31 セイコーエプソン株式会社 スクリーン
JP2011123233A (ja) * 2009-12-10 2011-06-23 Seiko Epson Corp スクリーン装置
DE102011009579A1 (de) * 2011-01-27 2012-08-02 Ddc Design & Development Gmbh & Co. Kg Flexibles Zugsystem für Bildwandsysteme und Verfahren zur Montage von Bildwandsystemen
US10684542B2 (en) 2017-05-16 2020-06-16 Draper, Inc. Projection screen system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE396849C (de) * 1922-02-24 1924-06-10 Cesare Parolini Vorrichtung zur Verbindung von Kinobild und Spiel lebender Darsteller
US1857673A (en) * 1930-05-31 1932-05-10 Earl J Vallen Stage or screen modifier
US2754900A (en) * 1952-09-03 1956-07-17 Karobonik Jack Safety pool cover
US2827955A (en) * 1956-03-29 1958-03-25 Albert B Hurley Folding motion picture projection screen
DE1140368B (de) * 1958-06-24 1962-11-29 Lens N V Zusammenfaltbarer Projektionsschirm

Also Published As

Publication number Publication date
DE3369202D1 (en) 1987-02-19
EP0085527B1 (en) 1987-01-14
EP0085527A2 (en) 1983-08-10
EP0085527A3 (en) 1984-04-18
JPH0220089B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-05-08
ATE24974T1 (de) 1987-01-15
JPS58154833A (ja) 1983-09-14

Similar Documents

Publication Publication Date Title
US4406519A (en) Projection screen assembly
KR102363427B1 (ko) 지중배전라인 분기가 용이한 기능성 향상 연결 커넥터
CA1178462A (en) Projection screen assembly
US5341898A (en) Foldable boom for mounting on a roof of a building
US6467575B1 (en) Collapsible spiral-tube escape way
JP4491690B2 (ja) ストレッチャー
EP0395297B1 (en) Rescue frame
PT1627844E (pt) Unidade de elevação modular
GB2213453A (en) Man-hole hoist
US9574367B2 (en) Collapsible low-profile privacy structure
CA1282749C (en) Personnel safety device for an underground duct particularly a sewer pipe
US3801813A (en) Combination mast and light raising and lowering apparatus
WO1994015671A1 (en) Rescue chute
US7025173B2 (en) Rescue system for high-rise buildings
KR102006856B1 (ko) 가림막 및 그 가림막을 이용한 들것
US20020111250A1 (en) Collapsible structure device for practicing elastics-assisted trampoline, an activity called "acro-bungy"
CN109078272A (zh) 一种可收纳式安全逃生器
WO2017039266A1 (ko) 안전삼각대
WO1993006889A1 (en) Escape system
CN213806972U (zh) 一种用于消防设施施工警示装置
JP2008067770A (ja) Ｘ線撮影装置
JP2947752B2 (ja) プロセニアムを備えた収納式舞台
JPH0111672Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN208175587U (zh) 一种市政用的花木固定结构
RU2030188C1 (ru) Устройство для эвакуации людей, например, из горящего здания

Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry