Abstract: A one-piece, steel, aerosol can formed by a draw and iron process with varying wall thicknesses, including a main body of a first wall thickness, a cone area above of a greater second wall thickness and a curl area above of a third thickness smaller than the second thickness and adapted to fit a standard aerosol valve. A process for shaping the can with the respective wall thickness sections. The process includes necking the can near the top end. The bottom of the can may be supported to maintain a shape during necking. The can interior may be pressurized during necking to resist permanent deformation of the can during necking.

Abstract: To use significantly less propellant in the manufacture of two-phase aerosol space spray products while avoiding the use of a vapor tap valve the sprayed product uses a reduced concentration of propellant and perhaps also organic solvent, of 8.5-18% by weight. Substantial economic, environmental and consumer safety benefits are also achieved.

Abstract: A can shaped at the top to cooperate with a resealable easy open closure or end so that the end can be peeled away to open a can and the easy open end can be snapped back in to close the can.

Abstract: A washing system for cans in which interior washing nozzles move in synchronization with the cans and are axially centered with the cans and in which a washing jet impinges directly on the interior bottom of a can and exits by flowing along the interior side wall surface of the can parallel to the centerline of the can.

Abstract: For a pressurized container for dispensing a fluent material, and particularly an aerosol container, the cover or lid is domed, but is of sufficiently thin material that it might distort under elevated pressure in the container. To inhibit such distortion, one or both of the side walls of the cover recess, which is toward the periphery of the installed cover, are reinforced against deforming or stretching out of the container. In one embodiment, the radially inner wall of the recess engages the radially outer wall of the recess so that outward distortion of the dome of the cover is resisted by the stiffness of both engaged walls of the recess, strengthening the thin material domed cover against deformation under pressure in the container. Specifically, there may be annular ribs or other engageable deformations on walls of the recess that engage and thereby provide interference against the radially outer wall moving up out of the container upon the dome attempting to deform outwardly.

Abstract: A top cover for an aerosol container comprises a seamable cover which is relatively thin walled with an outer periphery adapted for attachment to an aerosol container body, and a central opening defined by an inner periphery, the cover has a generally rounded dome shaped and the seamable cover is free of a countersunk recess in the vicinity of the periphery.

Abstract: An aerosol container cover having a central opening for a nozzle and an outer edge adapted for sealing attachment to the open end of an aerosol container body. The aerosol container cover being of a relatively thin walled metal and having a wall thickness in the range of 0.005 to 0.013 inch (0.127 to 0.330 mm) if the metal is steel, and being 0.005 to 0.018 inch (0.127 to 0.457 mm) in wall thickness if the metal is aluminum. The cover is thinner walled than would prevent distortion or eversion of the cover at government mandated minimum pressure levels in the aerosol container. The cover is of a generally convex dome shape as it extends from its outer edge to the central opening, and being free of any countersunk recess in the vicinity of its outer edge. In a method of making the aerosol container cover, the cover is attached to a container body by conventional seaming processing.

Abstract: An aerosol container cover having a central opening for a nozzle and an outer edge adapted for sealing attachment to the open end of an aerosol container body. The aerosol container cover being of a relatively thin walled metal and having a wall thickness in the range of 0.005 to 0.013 inch (0.127 to 0.330 mm) if the metal is steel, and being 0.005 to 0.018 inch (0.127 to 0.457 mm) in wall thickness if the metal is aluminum. The cover is thinner walled than would prevent distortion or eversion of the cover at government mandated minimum pressure levels in the aerosol container. The cover is of a generally convex dome shape as it extends from its outer edge to the central opening, and being free of any countersunk recess in the vicinity of its outer edge. In a method of making the aerosol container cover, the cover is attached to a container body by conventional seaming processing.

Abstract: For a pressurized container for dispensing a fluent material, and particularly an aerosol container, the cover or lid is domed, but is of sufficiently thin material that it might distort under elevated pressure in the container. To inhibit such distortion, one or both of the side walls of the cover recess, which is toward the periphery of the installed cover, are reinforced against deforming or stretching out of the container. In one embodiment, the radially inner wall of the recess engages the radially outer wall of the recess so that outward distortion of the dome of the cover is resisted by the stiffness of both engaged walls of the recess, strengthening the thin material domed cover against deformation under pressure in the container. Specifically, there may be annular ribs or other engageable deformations on walls of the recess that engage and thereby provide interference against the radially outer wall moving up out of the container upon the dome attempting to deform outwardly.

Abstract: A low pressure aerosol dispensing can which is distinguished from existing high pressure aerosol dispensing cans. The generally cylindrical can has a thin wall thickness, like that of a carbonated beverage can, which can be distorted by finger pressure but whose shape is maintained by internal gas pressure. The liquid contents to be dispensed and the propellant gas are mixed in the can. The dispensing valve at the top of the can dispenses the liquid contents and propellant in a controlled manner. The valve may include an additional narrow bore vapor tap between the gaseous propellant head space in the can and the valve chamber for delivering extra gas for atomizing the liquid and propelling it from the nozzle. The gas pressure in the can is coordinated with the can wall and bottom thickness so that the can will have sufficient distortion resistance and burst resistance at elevated temperature.

Abstract: An irritant aerosol spray container has an opening into which a valve assembly fits and a gasket is positioned between the valve assembly and the container such that the portion of the gasket in communication with the interior of the container is substantially free of material extractable by halocarbon to form color in the extractant. A safety for the spray is also disclosed operable between first and second positions to permit and prohibit operation of the irritant spray as desired. A variety of irritant sprays particularly adapted to various conditions are also described.

Abstract: An irritant aerosol spray container has an opening into which a valve assembly fits and a gasket is positioned between the valve assembly and the container such that the portion of the gasket in communication with the interior of the container is substantially free of material extractable by halocarbon to form color in the extractant. A safety for the spray is also disclosed operable between first and second positions to permit and prohibit operation of the irritant spray as desired. A variety of irritant sprays particularly adapted to various conditions are also described.

Abstract: A low pressure aerosol dispensing can which is distinguished from existing high pressure aerosol dispensing cans. The generally cylindrical can has a thin wall thickness, like that of a carbonated beverage can, which can be distorted by finger pressure but whose shape is maintained by internal gas pressure. The liquid contents to be dispensed and the propellant gas are mixed in the can. The dispensing valve at the top of the can dispenses the liquid contents and propellant in a controlled manner. The valve may include an additional narrow bore vapor tap between the gaseous propellant head space in the can and the valve chamber for delivering extra gas for atomizing the liquid and propelling it from the nozzle. The gas pressure in the can is coordinated with the can wall and bottom thickness so that the can will have sufficient distortion resistance and burst resistance at elevated temperature.