Metal working – Method of mechanical manufacture – Scrap recovering or utilizing
Reexamination Certificate
2005-09-06
2005-09-06
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Scrap recovering or utilizing
C029S426400, C156S345420
Reexamination Certificate
active
06938318
ABSTRACT:
A method for disassembling a discarded refrigerator that uses a foamed resin as a heat insulator according to the present invention includes the processes of cutting and separating a heat-insulating housing of a refrigerator into pieces having a predetermined size and shape; obtaining the foamed resin by passing the pieces between a pair of compression rollers arranged so as to oppose each other and compressing the pieces, thereby peeling off and separating an incompressible plate-like object layered at least on one surface of the pieces; and collecting a foaming gas by passing the foamed resin (301) between a pair of compression rollers (331, 332) arranged so as to oppose each other and compressing the foamed resin, thereby allowing the foaming gas in the foamed resin to leak out. This makes it possible to collect a foaming gas in a heat insulator while maintaining a high concentration with small equipment at low cost.
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Matsuda Yutaka
Yotsumoto Mikio
Bryant David P.
Hamre Schumann Mueller & Larson P.C.
Matsushita Electric - Industrial Co., Ltd.
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