F - Mech Eng,Light,Heat,Weapons – 25 – C
Patent
F - Mech Eng,Light,Heat,Weapons
25
C
62/19
F25C 1/00 (2006.01) C01B 31/22 (2006.01)
Patent
CA 1166859
- 23 - ABSTRACT OF THE DISCLOSURE An apparatus for producing dry ice blocks includes an upper, charging mold having an outlet opening in its lower end and positioned in spaced relationship above a lower, press mold having an inlet opening in its upper end. The charging mold contains a slidable precompression piston and the press mold has a slidable press piston, the two pistons respectively being connected to actuators. A nozzle means supplies liquid carbon dioxide to the charging chamber, to form dry ice snow therein. A shutter assembly is positioned between the two openings, and includes a shutter having a forward extension which defines a recess therebeneath. The shutter is moved forwardly and back- wardly by actuator means from a position wherein both openings are closed, to a position wherein, both openings are open, to a position wherein only the outlet opening is closed. The pre- compression piston is effective to form accumulated dry ice snow into a charge block, which is then admitted to the press chamber by moving the shutter to its fully open position. Thereafter, the press piston forms the charge into a block of dry ice. The shutter is then shifted to the outlet only closed position, and the press piston elevates the block into the recess. Finally, the shutter is returned to its fully closed position, and at the same time moves the dry ice block away from the apparatus to a transfer means.
392170
Fukuda Tatsuo
Umino Naotake
Iwatani Sangyo Kabushiki Kaisha
Kirby Eades Gale Baker
LandOfFree
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