Method of making self-inflating air mattress
Patent 4261776 Issued on April 14, 1981. Estimated Expiration Date: 
March 8, 1999. 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.
March 8, 1999. 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 ReferencesInventorsApplicationNo. 06/018743 filed on 03/08/1979US Classes:156/213, Encasing or enveloping the configured lamina156/182, Of at least two bonded subassemblies156/245, In configured mold156/285, Direct application of vacuum or fluid pressure during bonding156/286, To remove gas from between assembled laminae156/292, Of laminae having opposed facing areas out of contact156/300, With covering of discrete laminae with additional lamina156/311, Sequential heating and cooling during pressure applying428/158, Foamed or cellular component428/319.7, Linear or thermoplastic428/71, Foamed or expanded material encased428/76, Complete cover or casing428/906, ROLL OR COIL441/129, BODY SUPPORTING BUOYANT DEVICE442/224, Plural fabric layers5/420, Padded5/709With solid filler (e.g., foam, spring, fiber)ExaminersPrimary: Goolkasian, John T.Assistant: Falasco, Louis Attorney, Agent or FirmInternational ClassesA47C 27/08 (20060101)A47C 27/14 (20060101) A47C 27/18 (20060101) B29C 44/02 (20060101) B29C 44/16 (20060101) AbstractTwo sheets of an air impermeable plastic coated fabric are placed horizontally, with a core of a resilient open cell foam material positioned between the two sheets. Heated platens are applied to this layup, followed by applying a vacuum to the interior, cooling the assembly, and then moderately pressurizing the then bonded assembly.Field of SearchBy bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewithProviding escapeways for gases trapped or generated between layers Tubular (airtight) torus (e.g., auto tube-making) Valve-applying With fluid pressure to prevent collapse of hollow structure during assembly and/or joining Bonding of sheets or webs only Encasing or enveloping the configured lamina Flexible sheet to cylinder lamina Direct application of vacuum or fluid pressure during bonding To remove gas from between assembled laminae Flash, trim or excess removal Of laminae having opposed facing areas out of contact With covering of discrete laminae with additional lamina Sequential heating and cooling during pressure applying Delaminating, per se In configured mold With cutting, punching, tearing or severing | |
