# US 8,568,859 B2 · Double-cell structure for window shade and manufacture method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,568,859 B2 - Document ID: US8568859B2 - Status: Granted - Kind: B2 - Application number: 12/806,599 - Filed: 2010-08-17 - Published: 2011-11-10 - Granted: 2013-10-29 - Earliest claimed: 2010-05-10 - Assignees: Teh Yor Co., Ltd. - Applicants: Fu-Lai Yu; Chin-Tien Huang - Inventors: Fu-Lai Yu; Chin-Tien Huang - Web page: https://patentgrep.com/patent/US8568859B2 ## CPC - B32B 3/04: characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material} - B32B 5/022: {Non-woven fabric} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 7/05: the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14) - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B60J 1/2091: {Foldable sunscreens (B60J1/2088 takes precedence)} - E06B 9/262: with flexibly-interconnected horizontal or vertical strips; Concertina blinds {, i.e. upwardly folding flexible screens} - E06B 9/266: Devices or accessories for making or mounting lamellar blinds or parts thereof {(cleaning of lamellar blinds A47L4/00; joining plastics plates for making venetian blinds B29C66/437)} - B32B 2250/20: All layers being fibrous or filamentary - B32B 2419/00: Buildings or parts thereof - E06B 2009/2627: {Cellular screens, e.g. box or honeycomb-like} - Y10T 156/1051: by folding - Y10T 156/1062: Prior to assembly - Y10T 428/24149: Honeycomb-like - Y10T 428/24661: Forming, or cooperating to form cells - Y10T 428/24686: Pleats or otherwise parallel adjacent folds - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention provides a double cell structure for window shade and its manufacture method for forming a substrate of double cell units. The substrate comprises first and second strip material bonded with each other, two lateral sides of the substrate being formed by first and second pleats. The substrate can then be cut to form multiple double cell units that are then stacked and bonded over one another for forming the double cell structure. In addition, the present invention also provides double cell structures for window shade. ## Claims ### Claim 1 A double-cell structure for a window shade comprising: a plurality of double-cell units bonded with one another, each double-cell unit comprising: first strip of web material having a first pleat formed at the rear of the window shade and a second pleat formed at the front of the window shade, the first and second pleats defining a base and two side portions; and a second strip of web material having a first and second distal end, the first distal end bonded with the base of the first strip of web material, the second distal end and end portions of the two side portions of the first strip of web material bonded with an outer side of an adjacent first strip of web material at an adjacent double-cell unit. ### Claim 2 (depends on 1) The double-cell structure according to claim 1, wherein the two side portions of the first strip of web material are respectively joined with the base at the first and second pleats and are folded toward an inner side of the base and wherein the first distal end of the second strip of web material is bonded at the inner side of the base. ### Claim 3 (depends on 2) The double-cell structure according to claim 2, wherein the second strip of web material is entirely located between the two side portions of the first strip of web material. ### Claim 4 (depends on 1) The double-cell structure according to claim 1, wherein each of the second strips of web material at least partially form one side of a first and second cell within each of the double-cell units and each of the second strips of web material are entirely located within the corresponding double-cell unit. ### Claim 5 (depends on 4) The double-cell structure according to claim 4, wherein the first and second cells each have four sides and at least two sides of the first cell and at least three sides of the second cell are formed by the first strip of web material. ### Claim 6 (depends on 4) The double-cell structure according to claim 4, wherein the first and second cells in each double-cell unit are entirely formed by three strips of web material joined with one another. ### Claim 7 (depends on 1) The double-cell structure according to claim 1, wherein the second distal end of the second strip of web material and an end portion of one of the two side portions of the first strip of web material are bonded at locations proximate to the outer side of the adjacent first strip of web material at the adjacent double-cell unit.