Aerosol overcap with evaporation vent

A package for storing a dispensable product, the package comprising

• a can including a valve cup and a product dispenser coupled to the valve cup and configured to dispense product stored in a product-storage chamber formed in the can, the valve cup being formed to include a reservoir configured to collect liquid applied to the can,
• a cap including an exterior shell having a top wall and a chamber side wall coupled to the top wall to form a shell chamber and an interior shell located in the shell chamber and coupled to the top wall of the exterior shell, wherein the top wall is imperforate and cooperates with the interior shell to form a vapor-collection space situated to receive vapor generated by evaporation of any liquid remaining in the reservoir formed in the valve cup after the cap is mounted on the can to cover the valve cup and the interior shell is formed to include vent means for venting vapor extant in the vapor-collection space into a vapor- discharge chamber located in the shell chamber between the interior shell and the chamber side wall for subsequent discharge to the atmosphere through a gap formed between the can and the chamber side wall of the exterior shell while the cap is mounted on the can to cover the valve cup, and
• wherein the vent means includes a first vapor-vent channel formed in the interior shell, and the first vapor-vent channel includes a vertical wall shaped to force the vapor downwardly toward the can and outwardly away from the can.

A package for storing a dispensable product the package comprising

• a can including a valve cup and a product dispenser coupled to the valve cup and configure to dispense product stored in a product-storage chamber formed in the can, the valve cup being formed to include a reservoir configured to collect liquid applied to the can,
• a cap including an exterior shell having a top wall and a chamber side wall coupled to the top wall to form a shell chamber and an interior shell located in the shell chamber and coupled to the top wall of the exterior shell, wherein the top wall is imperforate and cooperates with the interior shell to form a vapor-collection space situated to receive vapor generated by evaporation of any liquid remaining in the reservoir formed in the valve cup after the cap is mounted on the can to cover the valve cup and the interior shell is formed to include vent means for venting vapor extant in the vapor-collection space into a vapor-discharge chamber located in the shell chamber between the interior shell and the chamber side wall for subsequent discharge to the atmosphere through a gap formed between the can and the chamber side wall of the exterior shell while the cap is mounted on the can to cover the valve cup,
• wherein the vent means includes a first vapor-vent channel formed in the interior shell, and
• wherein the first vapor-vent channel is formed to have a vertically extending opening in an inner wall of the interior shell extending from an outer rim of the valve cup in a direction toward the top wall of the exterior shell.

A package for storing a dispensable product, the package comprising

• a can including valve cup and a product dispenser coupled to the valve cup and configured to dispense product stored in a product-storage chamber formed in the can, the valve cup being formed to include a reservoir configured to collect liquid applied to the can,
• a cap including an exterior shell having a too wall and a chamber side wall coupled to the top wall to form a shell chamber and an interior shell located in the shell chamber and coupled to the top wall of the exterior shell, wherein the top wall is imperforate and cooperates with the interior shell to form a vapor-collection space situated to receive vapor generated by evaporation of any liquid in the reservoir formed in the valve cup after the cap is mounted on the can to cover the valve cup and the interior shell is formed to include vent means for venting vapor extant in the vapor-collection space into a vapor-discharge chamber located in the shell chamber between the interior shell and the chamber side wall for subsequent discharge to the atmosphere through a gap formed between the can and the chamber side wall of the exterior shell while the cap is mounted on the can to cover the valve cup,
• wherein the vent means includes a first vapor-vent channel formed in the interior shell, and
• wherein the first vapor-vent channel is defined by two long side-wall edges, one short end-wall edge, and one channel floor included in the interior shell.

A package for storing a dispensable product, the package comprising

• a can including a valve cup and a product dispenser coupled to the valve cup and configured to dispense product stored in a product-storage chamber formed in the can, the valve being formed to include a reservoir configured to collect liquid applied to the can,
• a cap including an exterior shell having a top wall and a chamber side wall coupled to the top wall to form a shell chamber and an interior shell located in the shell chamber and coupled to the top wall of the exterior shell, wherein the top wall is imperforate and cooperates with the interior shell to form a vapor-collection space situated to receive vapor generated by evaporation of any liquid remaining in the reservoir formed in the valve cup after the cay is mounted on the can to cover the valve cup and the interior shell, is formed to include vent means for venting vapor extant in the vapor-collection space into a vapor-discharge chamber located in the shell chamber between the interior shell and die chamber side wall for subsequent discharge to the atmosphere through a gap formed between the can and the chamber side wall of the exterior shell while the cap is mounted on the can to cover the valve cup,
• wherein the vent means includes a first vapor-vent channel formed in the interior shell, and
• wherein the interior shell includes a cylindrical inner wall surrounding the valve cup and the first vapor-vent channel defines a side opening facing toward the valve cup and interrupting the cylindrical inner wall of the interior shell.

A package for storing a dispensing product, the package comprising

• a can including a vessel formed to include a product-storage chamber and a top closure member coupled to the body to close an opening into the product-storage chamber, the top closure member including a valve cup coupled to the vessel and a product dispenser mounted on the valve cup and configured to dispense product stored in the product-storage chamber to the surroundings,
• a cap including an imperforate top wall, an interior shell coupled to an underside of the imperforate top wall and configured to mate with the valve cup included in the can to mount the cap on the can, and a chamber side wall coupled to a perimeter edge of the imperforate top wall and arranged to surround the interior shell, wherein the interior shell includes an outer wall facing toward the exterior shell and cooperating with the chamber side wall and a portion of the top wall to form a vapor-discharge chamber therebetween, an inner wall facing away from the outer wall and cooperating with a portion of the imperforate top wall to form a vapor-collection space situated to receive vapor generated by evaporation of any liquid remaining in a reservoir formed in the valve cup after the cap is mounted on the can to cover the valve cup, a bottom edge interconnecting the inner and outer walls of the interior shell, a channel inlet opening into the vapor-collection space, a channel outlet opening into the vapor-discharge chamber, and a first vapor-vent channel extending between and interconnecting the channel inlet and the channel outlet to allow flow of vapor from the vapor-collection space to the vapor-discharge space therethrough while the cap is mounted on the can to cover the valve cup, and
• wherein the channel inlet is formed in the inner wall of the interior shell and the channel outlet is formed in the bottom edge of the interior shell.