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SE415830B - SOUND-INSULATING ISOLATOR - Google Patents

SOUND-INSULATING ISOLATOR

Info

Publication number
SE415830B
SE415830B SE7213194A SE1319472A SE415830B SE 415830 B SE415830 B SE 415830B SE 7213194 A SE7213194 A SE 7213194A SE 1319472 A SE1319472 A SE 1319472A SE 415830 B SE415830 B SE 415830B
Authority
SE
Sweden
Prior art keywords
frame
projection cloth
sheet
cloth
projection
Prior art date
Application number
SE7213194A
Other languages
Swedish (sv)
Inventor
J F Ravnkilde
I Ostrup
Original Assignee
Rockwool As
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 Rockwool As filed Critical Rockwool As
Priority to SE7213194A priority Critical patent/SE415830B/en
Priority to SE7900724A priority patent/SE415807B/en
Publication of SE415830B publication Critical patent/SE415830B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/68—Panellings; Linings, e.g. for insulating purposes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • 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
    • G03B21/585—Inflatable screens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Building Environments (AREA)

Abstract

A projection screen consists of an inflatable frame 3 of flexible material, a projection cloth 1 of flexible material which is tightly attached in the frame 3, and a flexible sheet 2 which is also tightly fastened against the frame 3. The cloth 1 and the sheet 2 are fastened at a distance from each other but basically parallel. The frame 3, the projection cloth 1 and the sheet 2 thereby form a closed space. A valve 5 is connected to the frame 3 to enable an inflation and thus a stiffening of the frame 3 so that the frame 3 stretches out the projection cloth 1 and the sheet 2. A valve 4 is connected to said space to enable an evacuation thereof, so that at least the projection cloth 1 can assume a spherical curved shape. The frame 3 can be extended 3a in the normal plane of the projection cloth 1 to form a shield against scattered light around the edge of the projection cloth. As an alternative, the frame 3 can be suitably provided on its outer side with preferably flexible scattered light screens 3b. <IMAGE>
SE7213194A 1972-10-12 1972-10-12 SOUND-INSULATING ISOLATOR SE415830B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE7213194A SE415830B (en) 1972-10-12 1972-10-12 SOUND-INSULATING ISOLATOR
SE7900724A SE415807B (en) 1972-10-12 1979-01-26 Projection screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7213194A SE415830B (en) 1972-10-12 1972-10-12 SOUND-INSULATING ISOLATOR

Publications (1)

Publication Number Publication Date
SE415830B true SE415830B (en) 1980-11-03

Family

ID=20296987

Family Applications (2)

Application Number Title Priority Date Filing Date
SE7213194A SE415830B (en) 1972-10-12 1972-10-12 SOUND-INSULATING ISOLATOR
SE7900724A SE415807B (en) 1972-10-12 1979-01-26 Projection screen

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE7900724A SE415807B (en) 1972-10-12 1979-01-26 Projection screen

Country Status (1)

Country Link
SE (2) SE415830B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990001090A1 (en) * 1988-07-25 1990-02-08 Rockwool International A/S Method for the manufacture of curved ceiling panels as well as a ceiling panel manufactured thereby

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990001090A1 (en) * 1988-07-25 1990-02-08 Rockwool International A/S Method for the manufacture of curved ceiling panels as well as a ceiling panel manufactured thereby

Also Published As

Publication number Publication date
SE415807B (en) 1980-10-27
SE7900724L (en) 1980-07-27

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