Abstract: An all plastic one piece blow molded pressure vessel and sprayer combination shows a bottom closure with upwardly inclined feet. Internal pressure causes the upward and inward portion of the feet to descend such that the feet remain in good contact with a planar surface on which the vessel is resting, such that the bottom does not become bulged outwardly and rock.

Abstract: A high-pressure container, and a method and apparatus for making the same, is disclosed having a top portion defined as an injection molded portion. The injection molded portion is provided with rings which are fused to the other portion to provide a strong mechanical interlock therebetween. The top portion is pre-fabricated and then the second portion is blow molded around the top portion.

Abstract: A method and apparatus for producing hollow plastic articles are disclosed. The articles have a blow-molded portion and a compression-molded portion, and are formed by downwardly extruding plastic at at least one extrusion rate to progressively form a parison having a downwardly facing open end from a first location adjacent an extrusion head toward a second location axially spaced therefrom. A male mold member is provided at the second location. Portions of the open end of the parison are engaged by a plurality of fingers, while the open end travels toward the second location and the engaged portions are moved downwardly at a rate at least corresponding to the extrusion rate. During the travel toward the second location, portions of the open end are radially expanded and guided over the male mold member.