Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Diverse types
Patent
1981-03-30
1983-10-04
Caun, Peter M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Diverse types
160265, 160239, A47H 100, E06B 332
Patent
active
044073496
ABSTRACT:
Improvement in shielding windows having at least two panes, which form an enclosed space by means of a frame, in which space a shield is arranged to adjustably shield the window opening completely or partly. The shield is extendable and retractable out of and in to a storing position in the space, one end of said shield being fixed to a storing device and either the other end or said storing device being fixed to a piston disposed between the panes. The piston is displacable along the panes and corresponds to the cross-section of the space. Either the storing device or the other end is fixed to the frame so that displacement of the piston will cause a relative displacement of the two ends of the shield (extension or retraction). A pressurized air conduit opens into the space on one side of the piston and a second conduit opens into the space on the other side of the piston. A valve is provided for supplying pressurized air to one of the conduits and opening the other conduit for returning of air and vice versa so that the piston can be displaced in both directions by the air pressure.
REFERENCES:
patent: 1713989 (1929-05-01), Warnick
patent: 1751735 (1930-03-01), Hicinbothem
patent: 1772892 (1930-08-01), Green
patent: 1944454 (1934-01-01), Park
patent: 1983617 (1934-12-01), Ladon
patent: 2415222 (1947-02-01), Spencer
patent: 3211264 (1965-10-01), Streeter
patent: 3629980 (1971-12-01), Hordis
Caun Peter M.
Lieberman Cherney S.
Raywall Kommanditbolag
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