Abstract:
An apparatus by which resistant hollow cylindrical body members are provided by a trolley which rotates about a vertical cylindrical mold and distributes thread coils or glass webs impregnated with resin containing polymerizing catalysts on said mold. the distribution of threads in the form of coils is effected by a slide carried on the trolley and continuously upwards and downwards reciprocating.
Abstract:
A breathing circuit component includes an inlet, an outlet and an enclosing wall. The enclosing wall defines a gases passageway between the inlet and the outlet. At least a region of the enclosing wall is formed from a breathable material that allows the passage of water vapor without allowing the passage of liquid water or respiratory gases. The breathing circuit component may be the expiratory limb of a breathing circuit.
Abstract:
A method for manufacturing a flexible tubular underwater pipe (10): A leakproof tubular structure (12, 14, 16) is covered with at least one layer (18, 20) of armor wires. At least one continuous longitudinal element made of a deformable material is wound in a helix with short pitch around the layer (18, 20) of armor wires to form a holding layer 24. The at least one longitudinal element is wound under longitudinal tension T0 so as to stretch its deformable material according to a relative elongation corresponding to a tensile stress σ0 less than the elastic limit value σE of the deformable material, and the elastic limit value σE corresponds to a tensile stress beyond which the deformation of the material is irreversible.
Abstract:
A transportable system and method for the in situ eccentric manufacturing of reinforced thermoplastic pipelines in continuous lengths up to 10 miles and from 8 to 60 inches in diameter having a rotating frame assembly with a eccentric spools for application of reinforcing tapes and other components to a polyolefin core pipe, and further having a forming machine for cross sectional shape reduction of the reinforced thermoplastic pipelines to facilitate pulling the reinforced thermoplastic pipelines inside a host pipeline. Also provided are continuous monitoring and marking with application of tape in the hoop stress direction and the axial stress direction as well as saturated tape feeding stations for impregnation of the reinforcing tape for in situ curing.
Abstract:
A bat is created using efficient and automated techniques to apply layers of composite materials onto a mandrel. The system includes a plurality of rotating wrapping mechanisms binding stages. Each wrapping mechanism rotates along a central axis while a mandrel is driven through the axis. The rotational motion allows each wrapping mechanism to wrap one or more material strips along the outer surface of the mandrel. Between each wrapping layer, a binding material such as fusible thread may be applied to fuse wrapping layers together. The wrapping may be performed for the bat barrel and bat handle. Each mandrel may form two bats, and multiple mandrels can be connected together to maximize wrapping efficiency. The wrapped mandrels are separated into bat units, a resin transfer molding is performed, and the bats are completed.
Abstract:
Method and device for manufacturing an object (1) by spinning at least one thread (5) or band with a hardenable matrix onto a core element (4), the thread (5) or band being carried by a spool (2) which rotates in relation to the core element/object (4/1) at the same time that the spool (2) moves chiefly in one specific length direction in relation to the object (1) so that the object (1) is continuously pulled off the core element (4). In addition to the movement in the specific length direction, a back and forth movement is conducted between the spool (2) and the core element/object (4/1) over a predetermined part of the core element's/object's (4/1) length so that the thread (5) or band is applied chiefly from the object's inner surface to its outer surface while forming a 4-dimensional structure.
Abstract:
An object of the present invention is to provide a high-quality fiber reinforced resin member that enables a longitudinal yarn to be laid out, without slipping, around an outer periphery of a mandrel having at least a bent portion, thus allowing both the longitudinal yarn and a diagonal yarn to be evenly laid out, and a method of manufacturing the fiber reinforced resin member, as well as an apparatus manufacturing a fiber fabric for the fiber reinforced resin member. A fiber reinforced resin member 1 includes an elongate fiber fabric formed by braiding a plurality of longitudinal yarns Q, . . . extending in a longitudinal direction of the fiber fabric and a plurality of diagonal yarns P, . . . inclined at a predetermined angle to the longitudinal direction, the fiber fabric being impregnated with resin that is then hardened. The fiber reinforced resin member 1 has at least a bent portion 1″. The longitudinal yarns Q, . . . are spirally wound at the bent portion 1″, in a posture in which the longitudinal yarns are inclined at an angle of, for example, 10 to 15 degrees to the longitudinal direction.
Abstract:
A filament winding apparatus includes a control unit, a rotation mechanism that rotates a mandrel, a hoop winding head that performs hoop-winding, and a helical winding head that performs helical-winding. The hoop winding head includes bobbins that feed fiber bundles to the mandrel and a circulation mechanism that circulates the bobbins around the mandrel. The control unit controls the rotation and circulation mechanisms such that the mandrel is rotated and the bobbins are circulated in the same direction during helical-winding. It is not necessary to cut fiber bundles after hoop-winding, and wasted fiber is not fed during helical-winding, thereby increasing economy and productivity.
Abstract:
A breathing circuit component includes an inlet, an outlet and an enclosing wall. The enclosing wall defines a gases passageway between the inlet and the outlet. At least a region of the enclosing wall is formed from a breathable material that allows the passage of water vapour without allowing the passage of liquid water or respiratory gases. The breathing circuit component is the expiratory limb of a breathing circuit.
Abstract:
A breathing circuit component includes an inlet, an outlet and an enclosing wall. The enclosing wall defines a gases passageway between the inlet and the outlet. At least a region of the enclosing wall is formed from a breathable material that allows the passage of water vapor without allowing the passage of liquid water or respiratory gases. The breathing circuit component may be the expiratory limb of a breathing circuit.