Pellet press for dry ice

Details Pellet press for dry ice Pellet press for dry ice

2006-01-17

2006-01-17

Doerrler, William C (Department: 3744)

Refrigeration

Cryogenic treatment of gas or gas mixture

Solidification

C062S605000

Reexamination Certificate

active

06986265

ABSTRACT:
In an apparatus for making dry ice pellets having plural pressing chambers, each pressing chamber is provided with a movable piston for compressing carbon dioxide into solid state and for pressing the solid carbon dioxide through a perforated plate disposed at the end of the pressing chamber. Through connecting rods, the pistons in the pressing chambers are connected with a common crankshaft driven by a motor. The pressing chambers are provided with an inlet for supplying the carbon dioxide in fluid state and with outlet for carbon dioxide in gaseous state. In this way a very compact construction is achieved which is suited for mobile units, particularly dry ice blasting units.

REFERENCES:
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patent: 3576112 (1971-04-01), Frost et al.
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patent: 4776769 (1988-10-01), Hilaris
patent: 5249426 (1993-10-01), Spivak et al.
patent: 5385023 (1995-01-01), Montemayor et al.
patent: 5475981 (1995-12-01), Becker
patent: 5845516 (1998-12-01), Allen, Jr.

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