Fiber-reinforced pipe flange
AssigneeAmeron, Inc.
InventorDalton W. Bordner
Life of this patent
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Abstract
A technique for forming a pipe flange having radial reinforcement in at least the annular portion of the bolt circle uses a specially woven band of fibers. The woof fibers in the band are longer than the width of the warp fibers so that as the band is wound into the slot of a mandrel, the tails of the woof fibers bend and extend in a radial direction.
Claims14
A fiber-reinforced, nominally flat plate having a circle of bolt holes through the plate, at least a portion of the fibers following a U-shaped path, the ends of such fibers extending outwardly in a generally radial direction adjacent to each face of the plate across the circle of bolt holes and the central portion of such fibers extending between the faces of the plate.
In a fiber-reinforced pipe flange comprising a round, nominally flat plate having a central hole for mounting on a pipe and a plurality of bolt holes in a circle around the central hole, the improvement comprising:
- an annular portion of the plate at least at the radial location of the bolt holes comprising a plurality of circumferentially extending reinforcing fibers and a multiplicity of fibers at least partially extending in a generally radial direction across the circle of bolt holes adjacent to the faces of the plate.
In a fiber-reinforced pipe flange comprising a round, nominally flat plate having a central hole for mounting on a pipe, the improvement comprising:
- a multiplicity of fibers in at least an annular portion of the flange between the central hole and the perimeter of the plate having a central portion extending longitudinally through the flange and a non-woven end portion extending outwardly in a radial direction at each face of the flange.
In a fiber-reinforced pipe flange comprising a round, nominally flat plate having a central hole for mounting on a pipe and a plurality of bolt holes in a circle around the central hole, the improvement comprising an annular portion of the plate at least at the radial location of the bolt holes comprising:
- a plurality of circumferentially extending bands of warp fibers;
- a multiplicity of woof fibers having central portions interwoven with the warp fibers and end portions extending in a generally radial direction adjacent to the faces of the plate;
- and
- rovings of reinforcing fibers extending circumferentially between the circumferentially extending bands of warp fibers for preventing cracking in the region of the bolt holes.
Dependencies are inferred from the claim text.