Abstract: A locking member for use in a fuel tank assembly of the type having a pressurizable tank with an aperture and having a plurality of retaining lugs transversely extending along the periphery of the tank aperture. A fuel sender assembly having a first portion disposed within the aperture and a second portion having a plate-like shoulder in mating contact with an external tank surface. A seal element is disposed between the tank and the fuel sender assembly in an annular groove provided in the external tank surface intermediate the aperture and the retaining lugs. The locking member comprising a locking ring having an aperture through which a portion of the fuel sender assembly extends, the locking ring having a generally planar lower surface in mating contact with an upper surface of the plate-like shoulder of the fuel sender assembly and having a plurality of lug supports corresponding to the plurality of retaining lugs.

Abstract: A parison forming device is disclosed for forming hollow polymer extrudes of variable wall thickness in either the circumferential or longitudinal directions, or in any combination thereof. The parison forming device consists of a die-head assembly and mandrel assembly, concentrically arranged, creating an annual opening. The inner or outer circumferential perimeter of the annular opening may be selectively modified at specific radial locations through radially displaceable slides positioned about the annular opening. The slides, attached to either the die-head assembly or mandrel assembly, may be actuated during parison formation via hydraulic or other methods so as to provide suitable wall thickness profiles for later finished polymer products.

Abstract: A locking member is disclosed for use in a fuel tank assembly of the type having a pressurizable tank with an aperture and having a plurality of retaining lugs transversely extending along the periphery of the tank aperture. A fuel sender assembly having a first portion disposed within the aperture and a second portion having a plate-like shoulder in mating contact with an external tank surface. A seal element is disposed between the tank and the fuel sender assembly in an annular groove provided in the external tank surface intermediate the aperture and the retaining lugs. The locking member comprising a locking ring having an aperture through which a portion of the fuel sender assembly extends, the locking ring having a generally planar lower surface in mating contact with an upper surface of the plate-like shoulder of the fuel sender assembly and having a plurality of tabs corresponding to the plurality of retaining lugs.