Abstract: An apparatus is configured to be positioned between a boss and a shell of a pressure vessel. The boss includes a bore therethrough, and the bore has a longitudinal axis. The apparatus includes an annular body and a gas permeable feature. The annular body includes an inner surface configured to abut the boss and an outer surface configured to abut the shell. The annular body has opposite first and second ends relative to the longitudinal axis. The gas permeable feature is provided on the inner surface and extends at least from the first end to the second end. The disclosure also describes a pressure vessel including a shell, and boss, and an apparatus positioned between the boss and the shell. A method for forming a pressure vessel includes mounting a boss on a mandrel, positioning an annular fitting about a neck of the boss, forming a liner, and forming an outer shell.

Abstract: An apparatus is configured to be positioned between a boss and a shell of a pressure vessel. The boss includes a bore therethrough, and the bore has a longitudinal axis. The apparatus includes an annular body and a gas permeable feature. The annular body includes an inner surface configured to abut the boss and an outer surface configured to abut the shell. The annular body has opposite first and second ends relative to the longitudinal axis. The gas permeable feature is provided on the inner surface and extends at least from the first end to the second end. The disclosure also describes a pressure vessel including a shell, and boss, and an apparatus positioned between the boss and the shell. A method for forming a pressure vessel includes mounting a boss on a mandrel, positioning an annular fitting about a neck of the boss, forming a liner, and forming an outer shell.

Abstract: An apparatus is configured to be positioned between a boss and a shell of a pressure vessel. The boss includes a bore therethrough, and the bore has a longitudinal axis. The apparatus includes an annular body and a gas permeable feature. The annular body includes an inner surface configured to abut the boss and an outer surface configured to abut the shell. The annular body has opposite first and second ends relative to the longitudinal axis. The gas permeable feature is provided on the inner surface and extends at least from the first end to the second end. The disclosure also describes a pressure vessel including a shell, and boss, and an apparatus positioned between the boss and the shell. A method for forming a pressure vessel includes mounting a boss on a mandrel, positioning an annular fitting about a neck of the boss, forming a liner, and forming an outer shell.

Abstract: An apparatus is configured to be positioned between a boss and a shell of a pressure vessel. The boss includes a bore therethrough, and the bore has a longitudinal axis. The apparatus includes an annular body and a gas permeable feature. The annular body includes an inner surface configured to abut the boss and an outer surface configured to abut the shell. The annular body has opposite first and second ends relative to the longitudinal axis. The gas permeable feature is provided on the inner surface and extends at least from the first end to the second end. The disclosure also describes a pressure vessel including a shell, and boss, and an apparatus positioned between the boss and the shell. A method for forming a pressure vessel includes mounting a boss on a mandrel, positioning an annular fitting about a neck of the boss, forming a liner, and forming an outer shell.

Abstract: A composite shaft assembly includes a core having an outwardly facing surface. At least one structure embedded in a resilient material extends from the outwardly facing surface. The outwardly facing surface defines an outer surface spaced from the outwardly facing surface which is fixable to an inner surface of a composite shaft.

Abstract: A flexible coupling is provided to connect a flange on a drive shaft to a flange on a driven shaft. Circumferentially spaced fastening means provide bores through the coupling through which bolts can be passed to connect it alternately to the one and then the other flange. Adjacent fastening means are interconnected by link and washers are positioned at opposite ends of the stack of links at each fastening means. In accordance with the invention the washers are formed with peripheral grooves which will be entered by the plastics material forming the body of the coupling, thus locking the washers against being expelled when bolts are subsequently passed through the bores.

Abstract: A flexible coupling is provided to connect a flange on a drive shaft to a flange on a driven shaft. Circumferentially spaced fastening means provide bores through the coupling through which bolts can be passed to connect it alternately to the one and then the other flange. Adjacent fastening means are interconnected by link and washers are positioned at opposite ends of the stack of links at each fastening means. In accordance with the invention the washers are formed with peripheral grooves which will be entered by the plastics material forming the body of the coupling, thus locking the washers against being expelled when bolts are subsequently passed through the bores.

Abstract: A composite flange providing the low cost and bonding capability of molded flanges with the torque capacity near that of metal flanges. Multiple layers of braided fiberglass enveloping a fiberglass ring are placed into a mold of the desired shape. After the mold is closed, liquid resin is injected and the flange is cured to the desired state. After demolding, the flange is machined as necessary for installation onto the drive shaft.

Abstract: To couple a driving shaft of a machine to a driven shaft, a coupling assembly is mounted to the driving and driven shafts and includes a flexible coupling element. The flexible coupling element includes a plurality of first fasteners adapted to be connected to the driving shaft and a plurality of second fasteners adapted to be connected to the driven shaft. A plurality of fibers connects different ones of the first fasteners to different ones of the second fasteners so that the first fasteners applies force to the second fasteners to transmit torque. The filaments or fibers are looped around the fasteners and the coupling element has a thickness in the range of 1 percent to 10 percent of its diameter.