Abstract: Method and apparatus for producing an advanced fibrous composite, concrete-reinforcing bar device by laying down a continuous band of tow or tows, yarn or yarns, or strand or strands of very fine filaments and liquid bonding material along at least an elongate, removable, form piece as a band member of endless belt formation through a delivery eye that reciprocates longitudinally along such form piece, which form piece is removed after setting of the bonding material to provide an empty space between a pair of load-bearing tandem portions of such band member.

Abstract: Concrete structures, such as beams, columns, decks, walls, and the like are reinforced by advanced fibrous composite, concrete reinforcing devices, embedded in concrete, the devices comprising, respectively, at least one continuous band of tow, yarn, or strand of high strength, high modulus, fibrous laminate material having a multitude of very fine structural filaments as laminae bonded together in endless belt formation, such band or bands forming a bar of endless belt formation having at least two length portions extending longitudinally in substantially coextensive spaced relationship as load-bearing tendons, with end portions continuing around opposite ends of the device in unbroken continuity. The tendons of the bar may be either straight or deflected and may be pre-tensioned or post-tensioned. A band may be interlaced as a continuous perimeter, mesh shell.

Abstract: A filament wound pipe for conveying fluids, said pipe having a central longitudinal axis which extends along a length of said pipe which includes at least an end thereof that is for connecting said pipe to another body, said pipe comprising a filament wound axial section, two ramp sections and at least one end section wherein said ramp section is between said axial and said end sections along said central longitudinal axis, and wherein said end section is internally threaded; and wherein said filaments extend from said axial section through said ramp section to a first, to a second and to other locations in one of said end sections and wherein from said ramp section to an end of said end section remote from said ramp section inner dimensions increase along said central longitudinal axis.

Abstract: End connectors of filament wound tubes are disclosed. The end connector uses an upset region at an end of the filament wound tube as a base for mounting a threaded ring around the tube. The ring is threaded to a sleeve mounted also around this upset region. The sleeve threads to a coupling on the other side of the upset region. The coupling carries means for connecting the filament wound tube to another body. In forming the end connector, the sleeve and coupling are assembled about the upset region and the ring, assembled on the body of the filament wound tube on the other side of the upset, is threaded to the sleeve.

Abstract: End connectors of filament wound tubes are disclosed. The end connector uses an upset region at the end of the filament wound tube as a base in mounting a threaded retaining ring around the tube. The retaining ring is threaded to a housing mounted also around this upset region. The housing carries means for connecting the filament wound tube to another body and forming a pressure seal between the liner (optional) of the tube and the tip end of sleeve inserted beneath the upset region.

Abstract: A hollow filament wound tube having a plurality of cylindrical, hollow, open ended load bearing shells embedded between radially spaced layers of fiber of the filament wound tube, the shells having a longitudinal dimension less than that of the filament wound tube.

Abstract: A hollow filament wound tube having a plurality of cylindrical, hollow, open ended load bearing shells embedded between radially spaced layers of fiber of the filament wound tube, the shells having a longitudinal dimension less than that of the filament wound tube.