Refrigeration – Processes – Circulating external gas
Patent
1994-04-12
1995-12-12
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62384, B29C 4300
Patent
active
054739039
ABSTRACT:
There is provided a method and apparatus for practicing carbon dioxide particle blasting utilizing dense carbon dioxide pellets which have been formed by converting the solid carbon dioxide into liquid, flowing that liquid within a plurality of die openings, and transforming the liquid back into the solid phase while still within the die opening. This method includes the formation of a carbon dioxide cake within a snow barrel, urging the carbon dioxide cake against an upstream surface of a die plate having a plurality of die openings with such pressure such that the carbon dioxide becomes liquified within or adjacent the entrance of the die opening due to the pressure, responding as a super viscous liquid, and flowing within a portion of the respective die openings as a liquid. Along the length of the die openings, the liquid changes phase back to the solid state, while the die openings maintain compression (accompanying the back pressure) on the CO.sub.2 to create pellets having a high density. The pellets are thereafter transported to an application nozzle and directed against a workpiece.
REFERENCES:
patent: 3835657 (1974-09-01), Scudder
patent: 4770684 (1988-09-01), Tsukada et al.
patent: 4780119 (1988-10-01), Brooke
patent: 4947592 (1990-08-01), Lloyd
patent: 5018667 (1991-05-01), Lloyd
patent: 5050805 (1991-09-01), Lloyd
patent: 5188151 (1993-02-01), Young et al.
Lloyd Daniel L.
Young Frederick C.
Capossela Ronald C.
Cold Jet, Inc.
LandOfFree
Method and apparatus for producing carbon dioxide pellets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for producing carbon dioxide pellets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for producing carbon dioxide pellets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1353374