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1496results about How to "Prevent sagging" patented technology

Fiber-reinforced composite hollow structure, method for production thereof, and apparatus therefor

Center cores are formed by extrusion-molding ABS resin. Seven pieces of the center cores, which are juxtaposed to each other in the horizontal direction, are supplied by a pultruder, and reinforcing long-fibers impregnated with an unsaturated polyester resin are allowed to pass through dispersion guides and squeezing nozzles, to thus squeezing-mold a fiber-reinforced composite hollow structure having FRP made legs. A final squeezing nozzle is disposed in a cross head die through a cooling jacket, and the hollow structure thus molded is allowed to pass therethrough to be covered with the ABS resin in a state in which the outer periphery of the hollow structure is heated. The hollow structure thus covered is subjected to cooled-sizing through a plurality of horizontal and vertical pairs of rollers, and then cured in a hot curing tank. The surface covered with the ABS resin is subjected to a surface-treatment of imparting irregularities for giving an antislipping function to the surface. A thermoplastic resin-made protective cap is fitted to an end of the center core. The apparatus for manufacturing a composite hollow structure has a plurality of pairs of rotatable and heat-resisting sizing rollers. The plurality of pairs of the sizing rollers are disposed in the pultruding direction while being gradually cooled in the order from those positioned on the upstream side to those positioned on the downstream side for sizing the softened outer layer covering the outer periphery of the intermediate layer.
Owner:UBE NITTO KASEI CO LTD

Lower limb powered shape righting device

The invention provides a lower limb powered shape righting device which comprises a waist supporting assembly and a left leg powered mechanism and a right leg powered mechanism which are the same in structure, the left leg powered mechanism and the right leg powered mechanism are symmetrically mounted on the two sides of the waist supporting assembly, and the waist supporting assembly is provided with a power module and a controller; the left leg powered mechanism is composed of a foot assembly, a shank assembly and a thigh assembly, the foot assembly is hinged to the shank assembly, the shank assembly is hinged to the thigh assembly, and the thigh assembly is hinged to the waist supporting assembly; the shape righting device further comprises an electric push rod, and the electric push rod is electrically connected with the controller; one end of the electric push rod is hinged to the shank assembly, and the other end of the electric push rod is hinged to the thigh assembly to drive the thigh assembly and the shank assembly to move relative to each other. The lower limb powered shape righting device has the advantages that the structure is stable, controllable performance is good, the lower limb powered shape righting device is portable, and a patient who is unhealthy in the lower limbs or a patient who suffers from knee, ankle and foot diseases can be assisted in conducting daily rehabilitation training independently.
Owner:WUHAN UNIV OF TECH
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