A cold or hot storage element for preserving at a predetermined temperature, iced and frozen products, perishable commodities, or products for consumption hot

摘要

628,020. Heat or cold storage apparatus. GLACES & CREMES GLACEES C. GERVAIS. March 24, 1947, No. 7985. Convention date, April 5, 1946. [Classes 29 and 64(ii)] A hot or cold storage element for keeping products at fixed temperatures comprises a porous plate having closed or capillary cells, which is subjected to a vacuum and then impregnated with an entectic saline solution. Suitable porous materials are Balsa wood, cellular concrete and activated carbon, and suitable salts potassium chloride, sodium borate and sodium sulphate. Boxes may be lined with plates of the material.