Abstract: This invention relates to an apparatus for freezing, transporting, and temporary storage of animal and/or human tissue (such as semen) for use in veterinary or medical practice (such as artificial insemination), where the collection is performed under field conditions not in the geographic vicinity of a storage facility and transportation is accomplished by public carrier to a storage facility at an extended distance.

Abstract: A method and apparatus for perfusing livers comprising a portable container and a liver receptacle removably positioned in such container. Portions of the receptacle are spaced from the walls of the container when the receptacle is in position so that ice may be positioned around the receptacle. A perfusate holder is mounted on the container. A second container surrounds a portion of the holder and is adapted to receive ice. An intermittently operated flow regulator controls gravity flow of perfusate at predetermined rate from the holder to the receptacle and a timer controls operation of controller at predetermined time intervals.

Abstract: The present invention relates to a container for refrigerating goods with dry ice. The container comprises an enclosed interior space subdivided by partition walls into a plurality of compartments which include one refrigerant compartment adapted to be charged with dry ice refrigerant and at least one chillroom compartment adapted for the containment of the goods to be refrigerated. The refrigerant compartment communicates with the chillroom compartment by openings which allow evaporating carbon dioxide from the dry ice to enter the chillroom compartment. The container also includes storage means of water located between the refrigerant compartment and the chillroom compartment in a sufficient quantity that at the beginning of the evaporation of the dry ice, the temperature in the chillroom compartment does not become substantially below -78.degree. C.Also disclosed is a method for refrigerating goods utilizing dry ice and storage means of water in the above mentioned container.

Abstract: Apparatus for converting a conventional insulating picnic cooler or the like into a refrigerator includes a small container, disposable within the cooler, for dry ice. A rectangular frame insertable within the interior of the cooler includes a pair of refrigeration coils which are disposed in proximity to opposed side walls of the cooler. One end of each of the coils connects to the dry ice container. The other end of the coils connects to a manually adjustable valve having a pressed blow-out section for relieving excess pressure. The valve is disposed in the exterior of the container. Gas flowing through the valve from the coil passes to the atmosphere through an indicator having a body of fluid in a transparent window so that bubbles produced upon passage of the gas are visible and allow manual adjustment of the valve to control the rate of gas flow and thus the rate of sublimation of the dry ice and the temperature within the cooler.

Abstract: A carbon dioxide snow hood is disclosed for separating gaseous and solid carbon dioxide particles and depositing a uniform blanket of the carbon dioxide particles in the form of snow on articles to be cooled.

Abstract: A system for advancing trays of foor or other material to be frozen or heated through a vertically oriented housing is provided with improved means for loading the trays at one end of the housing, causing incremental advancement of the trays and removing them from the other end of the housing. The device includes a removal drawer at the outlet end which, when closed, supports the stack of trays in the device. When the drawer is opened, the stack advances downwardly and the lowermost tray in the stack is removed from the bottom of the stack and is drawn outwardly with the drawer. During opening of the drawer, other means are employed to support the stack of trays after the stack has moved downwardly one tray increment. When the drawer is reclosed, the trays are again supported by the drawer. A cold (or hot) medium is introduced into the housing at a plurality of levels.

Abstract: Material is cooled by direct contact with CO.sub.2, and the CO.sub.2 vapor is recovered. A coolant reservoir is created in a holding tank wherein CO.sub.2 vapor, CO.sub.2 liquid and solid CO.sub.2 exist in equilibrium in the form of slush plus vapor. Liquid CO.sub.2 is supplied to a cooling chamber to cool the material by direct contact, creating contaminated CO.sub.2 vapor. The contaminated CO.sub.2 vapor is removed and directed to the coolant reservoir to condense the CO.sub.2 vapor and any contaminants which liquefy at temperatures above -69.degree. F. by melting solid CO.sub.2. Clean CO.sub.2 vapor and any noncondensables are withdrawn from the holding tank and the withdrawn CO.sub.2 vapor is reliquefied and returned to the CO.sub.2 storage vessel. Condensable contaminants are periodically removed from the holding tank by heating to a temperature where they can be blown out the bottom.

Abstract: A flexible sheet or garment to be worn on or around the human body, or body member for cooling and having two flexible plastic sheets or films which are joined or adhered to form two tortuous, adjacent, generally co-extensive, non-communicating fluid paths, one of said fluid paths being substantially and permanently filled with a viscous liquid heat transfer media and the other of said fluid paths being in communication with a reservoir of pressurized gas, means between said reservoir and other fluid path for regulating the flow of pressurized gas through said other fluid path and a pressure relief means in said other fluid path and positioned at a point remote from said reservoir to limit the gas pressure and gas flow rate in said other fluid path; and means for holding said sheet or garment in place on or around the human body, or body member.

Abstract: Apparatus and method are disclosed for continuously processing seafood products, to rapidly chill such products for subsequent freezing or for fresh shipment. Container means are provided for receiving the food product together with an aqueous bath for enveloping such product. The container means, which may comprise a plurality of trays or buckets, are carried by a conveyor belt means from the input to output end of the apparatus. Means overlying the moving containers deposit a frozen CO.sub.2 cloud into the aqueous enveloping bath to thereby render such bath an ice-water slurry. Means are further provided for agitating the ice-water slurry in the container means during movement through the apparatus, to promote uniformity in the enveloping bath and to promote cooling contact between the food product and the enveloping slurry. Food products are thereby chilled at typical rates in the range from about 1.degree. F per half-second to 1.degree. F per 8 seconds, with e.g. a relatively optimal rate of about 1.

Abstract: An apparatus and method is provided for increasing the effective horsepower of an internal combustion engine. The apparatus consists of a cooling chamber mounted so as to be in communication with the air inlet portion of the carburetor of the engine. In the method of this invention, the ambient air prior to introduction into the carburetor is substantially cooled to quantitatively increase the weight of oxygen in the volume of air introduced into the carburetor. This makes it possible to feed an additional amount of fuel to the engine while maintaining the optimum air-fuel ratio, thereby effectively increasing the horsepower obtainable from the engine.