Abstract: A cooling system built into a drinking mug. The mug contains a cooling ribbon spirally wound about the interior beverage holding area of the mug. A mobile cylinder container interconnects the ribbon channel with a replaceable nitrogen gas cartridge housed in a vacuum chamber located in the bottom of the mug. The cooling system is hand activated by a spring-loaded mechanism which moves the mobile cylinder container into and out of engagement with the ribbon channel. This arrangement buffers the ribbon channel from the gas cartridge and ensures that only measured amounts of the cooling gas from the gas cartridge are inserted into the ribbon channel. This arrangement also provides a means for supplementing the amount of cooling gas in the ribbon channel.

Abstract: A cooling system inside a beverage can bottom which is activated by pressing a bubble or combination or bubbles formed in the top of the can. The bubbles are internally connected to pin rods interconnected to one or more capsules located in the bottom of the can. The capsules contain a gas, usually in a liquid form such as liquid nitrogen or air. Pressure on a bubble causes the pin rod to activate a capsule or capsules thereby releasing gas into a closed loop plate system positioned within the can. The gas is of a type which causes the plate system to cool, thereby cooling the beverage in contact with the plate system.

Abstract: A drum is mounted for rotation about an axis. Its surface is substantially cylindrical about the axis, and axially mounted outside of the surface is a plurality of vanes each defining a slot with respect to the surface. The slot is an aerodynamic slot where accelerating air decreases pressure to produce thrust which is in the direction of rotation. The outer surface of the drum is not quite cylindrical, but is shaped to be of larger diameter at the slot to enhance Venturi action.