Michael A Curtis

54150094, May 16, 1995

Feb 3, 1994

8/190906

Marvin H. Weiner - Glyndon MD
Michael A. Curtis - Yakima WA

Cryo-Trans, Inc. - Mt. Airy MD

B60H 132

62239

A cryogenic refrigeration system for a container is selectively operable to maintain its cargo in frozen and non-frozen conditions. The system includes a cargo compartment defined by a floor, a pair of opposed side walls, a pair of opposed end walls, and a lower ceiling. A roof is located above the lower ceiling. Upper and lower compartments or bunkers are provided between the lower ceiling and the roof, and are separated by a fixed, non-porous upper ceiling. A plurality of openings extend through the lower ceiling for fluid communication between the lower compartment and the cargo compartment. Upper and lower cryogenic snow-forming devices are provided in the upper and lower compartments, with each snow-forming device having a coupling connecting it to a supply of cryogenic liquid. Conduits or passages are located in the walls and floor to convey the cryogenic snow and gas from the upper compartment and through the walls and floor in a manner that isolates the cryogenic snow and gas from the cargo compartment. Thermal insulation extends between and separates the conduits in the floor from the cargo compartment.

53236220, Jun 28, 1994

Apr 21, 1993

8/048730

Marvin H. Weiner - Glyndon MD
Michael A. Curtis - Yakima WA

Cryo-Trans, Inc. - Mt. Airy MD

B60H 132

62239

A multi-temperature cryogenic refrigeration system for a container is selectively operable to maintain its cargo in frozen and non-frozen conditions. The system includes a cargo compartment defined by a floor, a pair of opposed side walls, a pair of opposed end walls, and a lower ceiling. A roof is located above the lower ceiling. Upper and lower compartments or bunkers are provided between the lower ceiling and the roof, and are separated by a fixed, non-porous upper ceiling. A plurality of openings extend through the lower ceiling for fluid communication between the lower compartment and the cargo compartment. Upper and lower cryogenic snow-forming devices are provided in the upper and lower compartments, with each snow-forming device having a coupling connecting it to a supply of cryogenic liquid. Conduits or passages are located in the walls and floor to convey the cryogenic snow and gas from the upper compartment and through the walls and floor in a manner that isolates the cryogenic snow and gas from the cargo compartment.