Abstract: A blow-molded multi-layer plastic container having excellent surface luster which is obtained by blow-molding, as an outer surface of the container, an olefin resin which has fluidity properties satisfying the following formulas (1) and (2),log .tau..ltoreq.n log .gamma.+5.15 (1)andlog.tau..gtoreq.n log .gamma.+4.95 (2)wherein,.tau. is a shearing stress (dynes/cm.sup.2) as measured using a capillary rheometer in accordance with a flow property testing method (JIS K 7199), .gamma. is a shearing rate (sec.sup.-1) as measured by the same method, n is a number of from 0.39 to 0.41, and .gamma. lies from 9.times.10.sup.1 to 1.2.times.10.sup.3 sec.sup.-1.The blow-molded multi-layer plastic container does not develop sharkskin or flow marks. Moreover, melt-treatment of the outer surface of the blow-molded article eliminates rugged pattern that stems from the sand-blasted surfaces of the metal mold.

Abstract: Vessel for storing a fluid under pressure, such as a gas storage vessel, of the type comprising an internal casing surrounded by an external hooping. The internal casing has symmetry about a longitudinal axis, a central pipe section and two extremity portions, and at least one of the extremity portions protruding outwardly. The hooping is of reinforcing fibers coated with a thermoplastic of thermosetting binder, and opposite the pipe section the hooping has at least one layer of fibers, known as longitudinal fibers, having a flat winding pattern and a winding angle as small as possible, so as to allow a boss, centered on the longitudinal axis of the protruded extremity, to be uncovered with fibers. Further, the hooping has at least one layer of fibers, known as circumferential fibers, having an almost 90.degree. winding angle. Moreover, the pipe section further comprises at least one layer of fibers having a winding pattern that is either flat or helical with a winding angle (.alpha..sub.

Abstract: A dual-chamber composite pressure vessel includes a first enclosure formed of a fiber reinforced resin matrix, having a hollow cylindrical central section, and first and second oblate end sections formed integrally over respective ends of the central section to define a first chamber. Also included is a second enclosure formed of a fiber-reinforced resin matrix, integrally with the first enclosure, and having a second hollow cylindrical section which is joined at one end to and extends from the second end section co-cylindrically with the central section of the first enclosure. The second enclosure also includes a third oblate end section formed integrally over the other end of the second cylindrical section to define a second chamber.

Abstract: A method is disclosed for forming an integrally wound joint structure with filament wound composite structure at an adjacent end of the integrally wound joint structure and having means for attaching said integrally wound joint structure to another structure provided at other end of said joint structure. The joint structure includes filament winding over a joint tube or joint solid with appropriately sized and spaced grooves running circumferentially around the outer surface of the joint structure. A curable resin is employed in filament winding to complete an assembly which is placed in a conventional oven and allowed to cure.

Abstract: A pressure vessel for storing a highly pressurized pressure medium for use with motor vehicle air bags and the like has an elongated, pressure-tightly closable hollow body as well as at least one opening for the flowing-out of the pressure medium. The vessel can be made small and light by surrounding the circumference of the hollow body with a fiber composite winding.