Process for making hollow tubular structural members with integral end attachment fittings
Patent 5217555 Issued on June 8, 1993. Estimated Expiration Date: 
December 9, 2011. 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.
December 9, 2011. 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 2715087 2997411 Collapsible thermoplastic tubular container and method of producing the same Process for making a connecting rod for controlling or transmitting efforts, and connecting rod thus obtained Method for producing a tubular load-bearing hollow Patent #: 4483731 InventorsAssigneeApplicationNo. 803805 filed on 12/09/1991US Classes:156/156, With fluid pressure to prevent collapse of hollow structure during assembly and/or joining156/198, By inward collapsing of portion of hollow body156/245, In configured mold156/282, Simultaneous heating and cooling156/294, Core within tube264/248, Fusion bonding of preformed bodies and shaping at joint only264/258, Joining a plurality of superposed fibrous or textile layers264/263, To unite independent contacting preforms264/314Utilizing fluid-expansible moldExaminersPrimary: Ball, Michael W.Assistant: Maki, Steven D. Attorney, Agent or FirmForeign Patent References
International ClassB29C 053/20AbstractThe invention is a process for forming a hollow tubular member with an integral attachment end fitting. In detail, the method comprising the steps of: providing a first hollow tubular member made of a composite material; providing a support member adapted to fit within the first tubular member; installing the support member within the first tubular member and joining thereto; providing a second hollow tubular member made of composite material; installing the second tubular member within the end of the first tubular member such that it abuts the support member; providing an inflatable bladder having an inflation tube attached thereto; installing the inflatable bladder within the first tubular member such that it abuts the support member and the inflation tube extends out the end; pressurizing the bladder causing it to expand and apply pressure to the first and second tubular members; heating a portion of both the first and second tubular members to forming temperatures; and forming a portion of first and second tubular members into a solid flat rectangular cross-sectional shaped attachment end fitting.Field of SearchWith fluid pressure to prevent collapse of hollow structure during assembly and/or joiningStressing spherical or tubular body By inward collapsing of portion of hollow body In configured mold Inserting of lamina in hole, aperture or recess of other lamina and adherence to side walls thereof Core within tube Joining of nonplanar elements; e.g., configured hollow objects, etc. With joiner member or reinforcement By heat Involving defined plastic flow or melting of entire lamina Simultaneous heating and cooling Pitmans and connecting rods Joints and connections Nonmetalic shaft or component With disparate device for coupling shaft to additional shaft or rotary body Hollow or layered shaft With end structure Fusion bonding of preformed bodies and shaping at joint only One component is a fibrous or textile sheet, web, or batt Joining a plurality of superposed fibrous or textile layers To unite independent contacting preforms Utilizing fluid-expansible mold Including application of internal fluid pressure to hollow finite length parison to expand same into conformity with female mold part Including shaping by mechanical means other than fluid pressure during or subsequent to fluid pressure differential shaping To finite length tubular product | |
