# US 4,391,865 A · Thermal drapery construction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,865 A - Document ID: US4391865A - Status: Granted - Kind: A - Application number: 06/308,626 - Filed: 1981-10-05 - Granted: 1983-07-05 - Earliest claimed: 1981-10-05 - Inventors: Lillie B. Constance - Web page: https://patentgrep.com/patent/US4391865A ## CPC - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - A47H 21/00: Curtain shields - E04B 1/78: Heat insulating elements {(E04B1/7662 takes precedence)} - E06B 9/24: Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) - A47H 2201/01: Magnets - B32B 2038/0092: {Metallizing} - B32B 2305/026: Porous - Y10S 160/07: Fabric - Y10S 428/90: Magnetic feature - Y10S 428/92: Fire or heat protection feature - Y10T 428/237: Noninterengaged fibered material encased [e.g., mat, batt, etc.] - Y10T 428/24777: Edge feature - Y10T 428/26: Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension - Y10T 442/654: Including a free metal or alloy constituent - Y10T 442/696: Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.] - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - A47H: FURNISHINGS FOR WINDOWS OR DOORS (concerned with the functioning of the door or window E05; roller blinds E06B) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A thermal drapery construction including first and second metalized fabric panels, a third panel of high loft, low density, randomly oriented fibers disposed between the first and second panels and a thermal drapery liner located adjacent the metalized surface of the second fabric panel. The panels and liner are typically bound together along their aligned outer edges to form a highly insulating liner assembly. The liner assembly is lightweight, flexible, drapes well and can be used in conjunction with a decorative drapery fabric opposite the metalized surface of the first fabric panel to form pleated hung draperies. Adhesive means, such as magnetic strips, can be attached to the outer surface of the liner to seal against heat loss between the liner assembly and the window. ## Claims ### Claim 1 A thermal drapery construction suitable for use in making hung draperies comprising: a decorative flexible drapery fabric; and a flexible liner assembly means, attached to said drapery fabric, for thermally lining said drapery fabric comprising: a first fabric panel having a first metalized surface facing an inside direction and a second surface facing an outside direction; a second fabric panel disposed adjacent the first panel and having a first metalized surface facing the outside direction and a second surface facing the inside direction and the second surface of the first panel; a third relatively thick, low density flexible panel situated between the second surfaces of the first and second panels, said third panel having a low density to form a dead air space between said first and second panels; said first, second and third panels having aligned outer edges; and means for binding the aligned outer edges of said first, second and third panels. ### Claim 2 (depends on 1) The drapery construction of claim 1 further comprising a fabric liner disposed adjacent the first metalized side of the second fabric panel. ### Claim 3 (depends on 1) The drapery construction of claim 1 wherein said first and second panels are porous to permit moisture evaporation from between said first and second panels. ### Claim 4 (depends on 3) The drapery construction of claim 3 wherein said third panel comprises high loft non-woven battings of randomly dispersed fibers. ### Claim 5 (depends on 4) The drapery construction of claim 4 wherein said third panel is about 7-14 mm thick. ### Claim 6 (depends on 5) The drapery construction of claim 5 wherein the density of said third panel is about 0.014 g/cm.sup.3. ### Claim 7 (depends on 1) The drapery construction of claim 1 further comprising attachment means for securing the outer edges of the liner assembly to a surface to retard heat flow between the liner assembly and said surface. ### Claim 8 (depends on 1) The thermal drapery construction of claim 1 wherein said binding means binds the aligned outer edges leaving the remainder of the liner assembly substantially unbound. ### Claim 9 A thermal drapery liner assembly for use in combination with a decorative drapery fabric comprising: first and second fabric panels each having a metalized surface, said first and second panels opposed and arranged parallel to one another with their respective metalized surfaces facing outwardly in opposite directions, said first and second panels being porous to permit evaporation of moisture from between the first and second panels; a third panel of high loft, low density randomly oriented fibers disposed between the first and second panels; a fabric liner located adjacent the metalized surface of the second panel, the respective edges of said panel and liner being generally aligned; and means for binding together the first, second and third panels and the liner along their edges leaving the remainder of the panels and liner substantially unconnected.