Other

Laroche Industries, Inc.

Donald M Davis

William E Anderson

Jon L Curzon

An extruder and methods for converting pressurized liquid CO.sub.2 feed into dry ice pellets of predetermined shape and size, wherein the CO.sub.2 snow formation, CO.sub.2 snow compaction, and dry ice pellet extrusion phases occur simultaneously to achieve production rates on the order of 700-1000 lbs/hr. The increased production rates are achieved utilizing sintered plastic filter media to provide enhanced removal of CO.sub.2 gas from the CO.sub.2 snow formation chamber.

Pellet extruding machine

An extruder for converting pressurized liquid CO.sub.2 feed into dry ice pellets of predetermined shape and size, wherein the CO.sub.2 snow formation, CO.sub.2 snow compaction, and dry ice pellet extrusion phases occur simultaneously to achieve production rates on the order of 700-1000 lbs/hr. The compacted CO.sub.2 snow may be in the form of a solid cartridge or irregularly shaped solids, and such compacted particles may constitute an end product by themselves. The increased production rates are also achieved by enhanced removal of CO.sub.2 gas from the CO.sub.2 snow formation chamber, and use of a bidirectional internal regeneration cylinder to provide compactive force. The extruder is portable, since it only weighs approximately 1000 lbs., can be powered with a non-stationary energy source, and may be used to remanufacture partially sublimated dry ice solids into extruded dry ice pellets of a predetermined shape and size.

An amplified mixer-blower device for discharging a feed material at high velocity and enhanced volume using a venturi transport principle. Preferably, carbon dioxide vapor is used as a means for propelling the feed material which may have a different phase of the same composition of the propulsive gas, or constitute an entirely different material. The apparatus is suitable for a number of applications such as neutralizing airborne ammonia vapor or droplets, extinguishing a flammable liquid, and conveying solid materials.

Amplified mixer-blower mechanism and uses thereof

Apparatus and process for manufacturing non-woven textile pile fabric from a plurality of pile-forming strands having thermoplastic characteristics, as follows. A hollow strand extruder receives parallel textile strands therein extending longitudinally therethrough and shapes the strands into a continuous mass of a predetermined configuration for withdrawal therefrom. A plurality of relatively thin spaced-apart successive compartment devices are positioned generally in axial alignment with the extruder and define successive spaced-apart open-sided interior areas of the same general configuration of the shaped mass of strands and collectively define a longitudinally-extending passageway for receiving and holding the continuous mass of strands therein after withdrawal from the extruder. Mechanisms, preferably electrically heated hot wires, are mounted for progressive movement transversely of the strands through the spaces between and on each side of the compartments for transversely melting, cutting and fusing the mass of strands into a plurality of individual, transversely-extending slices of the shaped predetermined configuration and having fusedfiber outer faces with strands extending therebetween which maintain the integrity of the slices for subsequent cutting between the fused faces to form layers of non-woven pile fabric.

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Gainsville, GA, United States of America

Donald M Davis