Patent ID: 9032946
Filing Date: 2015-05-19
Classification: B29C,B29K,F41B

Abstract:
1. A method of making a riser, said method comprising the steps of: determining a geometric size of a riser based on structural and manufacturing requirements; determining an amount of maximum stresses and an orientation of the amount of maximum stresses that will be applied to the riser during a loading condition; determining how many fibers and an orientation of fibers that are necessary to embed in the riser to accommodate the amount of maximum stresses and the orientation of the amount of maximum stresses; providing a mold with a cavity having a predetermined cavity size, a number of gates having predetermined gate sizes, a predetermined injection pressure and a predetermined injection temperature to achieve a riser having the structural and manufacturing requirements; providing resin and fibers, wherein the resin has a solid state and a liquid state; flowing the resin and the fibers into the cavity through the number of gates having predetermined gate sizes, at the predetermined injection pressure and at the predetermined injection temperature to cause the fibers to orient in a predetermined quantity and orientation wherein the fibers are fully embedded within the resin, wherein a three dimensionally fiber-reinforced riser having the structural and manufacturing requirements is produced without a spine and that the fibers are constrained only by the resin when the resin is in the solid state.