Helium-filled sun shades
Patent 5076029 Issued on December 31, 1991. Estimated Expiration Date: 
January 2, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 2, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2411316 2863467 3030640 3052054 3184742 3412963 Pneumatic shipping enclosures Air structure Stadium cover Inflatable articles and method of making same InventorApplicationNo. 460243 filed on 01/02/1990US Classes:52/2.24, Sheetlike member comprising plural, edge-joined sections52/2.25, Including hold down means244/33CaptiveExaminersPrimary: Chilcot, Richard E. Jr.Assistant: Mai, Lanna Attorney, Agent or FirmForeign Patent References
International ClassE04B 001/34AbstractA sun shade is formed from two sheets of a tough, yet flexible material which have been cut to an appropriate shape and size, and sealed together at the edges to form a flat, balloon-like structure. A plurality of interconnecting flow channels or buoyant cells are stitched into the sheets to enable the structure to retain its shape without bulging. A conventional fill valve is provided for filling the space between the sheets with helium or another suitable gas. The shade is anchored above a selected surface using cables or other flexible connectors. | |
