Patent EP0072062A2 successfully refreshed from Google Patents.
EP0072062A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Externally actuated light shielding curtains housed in the sealed space of double glazings
Assignee: Individual
•
Filing: 1982-07-23
•
Granted: —
•
Expires: 2002-07-23
Abstract
Abstract A curtain for shielding light is made from a thin sheet of an easily deformable material, which is totally or partially opaque according to the requirements; it is contained in the sealed space of a double glazing and can be operated at will by means of the reciprocal magnetic attraction existing between two mobile parts, the first one being also contained in said sealed space and mechanically connected with said douser, while the second mobile part is outside said sealed space and can be moved by an operator. In an alternative embodiment, the said curtain is operated by means of electrostatic instead of magnetic attraction, and said electrostatic attraction takes place between two electric plates being carried respectively by said curtain, in the form of a metallic or metallized layer, and by the inner face of one of the two glass plates, making up the double glazing, in the form of a layer of a conductive or semiconductive, but in any case at least partly transparent material deposited thereupon. A previously impressed tension or deformation will help the said douser to recoil in an orderly manner whenever its extension is less than maximum.
Inventors
- 👤 Gian Vieri Nardini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:07
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/264; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; E06B3/6722; E06B2009/2643; E06B2009/2646
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
Light shielding curtain comprising a mobile and/or deformable shielding curtain, entirely contained in the sealed hollow space formed by two glass plates or double glazing, characterized in that said shielding curtain is a continuous plane sheet, mobile between an unshielding position, in which light is allowed to pass through the said two glass plates, and a shielding position in which the light is prevented from passing through said two glass plates for a desired and willingly variable extension, and actuating means for the displacement of the said curlain between said two positions, said actuating means being operated by a magnetic or electrostatic force.
Claim 2
Dependent Claim
103 words
Light shielding curtain comprising a mobile and/or deformable shielding curtain, entirely contained in the sealed hollow space formed by two glass plates or double glazing, characterized in that said shielding curtain is a continuous plane sheet, mobile between an unshielding position, in which light is allowed to pass through the said two glass plates, and a shielding position in which the light is prevented from passing through said two glass plates for a desired and willingly variable extension, and actuating means for the displacement of the said curlain between said two positions, said actuating means being operated by a magnetic or electrostatic force.
Claim 3
Dependent Claim
139 words
Light shielding curtain according to claim 1, characterized in that said actuating means comprise a first actuating member at least partially formed by magnetic or magnetizable material, said first member being mechanically connected to said curtain, whereby the displacement of said first actuating member within said hollow space corresponds to the displacement of said curtain between said two positions, and a second actuating member, positioned outside of said hollow spalce and movable along the outer surface of one of said glass plates, said second actuating member being at least partially formed by magnetic or magnetizable material, whereby a magnetic dragging force is generated between said first and second actuating members, means being provided for the guiding of at least one of said first and second actuating members, so as to keep it always parallel to the initial position thereof.
Claim 4
Dependent Claim
42 words
Light shielding curtain according to claim 2, characterized in that said curtain is a continuous sheet foldable like a bellows, having a first end fastened to one end of the double glazing and the other end fastened to said first actuating member.
Claim 5
Dependent Claim
60 words
Light shieleding curtain according to claim 2, characterized in that said curtain consists of a continuous sheet having one end fastened to one end of the double glazing and the other end fastened to said first actuating member, the latter being a roller freely rotatable around its axis, the said sheet being wound and unwound with respect to said roller.
Claim 6
Dependent Claim
27 words
Light shielding curtain according to claim 2, characterized in that said guiding means consist of two parallel guides for the sliding motion of said first actuating member.
Claim 7
Dependent Claim
31 words
Light shielding curtain according to claim 2, characterized in that said first and second actuating members are of ferromagnetic material, at least one of said two actuating members being permanent magnetized.
Claim 8
Dependent Claim
48 words
Light shielding curtain according to claim 2, characterized in that a number of cylinder shaped slugs adhere to said second actuating member, said slugs being magnetized along their axes and protruding towards the adjacent surface of the double glazing, said slugs being alternated, with alternatingly opposite magnetizing directions.
Claim 9
Dependent Claim
106 words
Light shielding curtain according to claim 2, characterized in that two double race sheaves are fastened to said second actuating member, said sheavy being freely rotatable around their axes and symmetrically mounted at the two ends of said member, either race of each sheave being engaged by either two cords, having their ends fastened to the upper end and to the lower end of the double glazing respectively, each cord thus forming with the length engaged with said sheaves a Z shaped configuration, whereby whatever displacement of said second actuating member from the parallel condition with respect to the initial position is automatically compensated and corrected.
Claim 10
Dependent Claim
64 words
Light shielding curtain according to claim 1, characterized in that said actuating means comprise electric plates respectively carried by said curtain and the inner face of one of said two glass plates, said electric plate carried by said glass plate being at least partly light transparent the two said plates forming a variable electric condenser, and means for varying the capacity of said condenser.
Claim 11
Dependent Claim
33 words
Light shielding curtain according to claim 9, characterized in that said electric plate carried by said curtain is a metallic or metallized layer and a dielectric layer is provided between said electric plates.
Claim 12
Dependent Claim
34 words
Light shielding curtain according to claim 9, characterized in that said electric plate carried by said glass plate is an electrically conductive or at least semiconductive layer coating the surface of said glass plate.
Claim 13
Dependent Claim
34 words
Light shielding curtain according to claims 10 and 11, characterized in that said dielectric layer is built in said curtain or deposited on top of said conductive or semiconductive coating of said glass plate.
Claim 14
Dependent Claim
32 words
Light shielding ourtain according to claim 10, eharacterized in that said curtain comprises three different layers, the outer ones being of dielectric materials and the intermediate layer being of electrically conductive material.
Claim 15
Dependent Claim
38 words
Light shielding curtain according to claim 9, characterized in that said two electric plates are each electrically connected to an electric lead, means being provided to establish a desired voltage between the ends of said two electric leads.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.