Document Type and Number:
Japanese Patent JPS4891641
Kind Code:
A
Abstract:
A portable constant temperature apparatus comprising a container having walls which are sealed to each other at least along their marginal regions to form at least one independent compartment. A chemical having a capability of assuming a substantial latent heat of fusion at a temperature corresponding to that desired for the constant temperature apparatus is disposed within the compartment. The chemical can then be heated to its melting temperature at which point it will assume its latent heat of fusion as it transforms into a liquid. When applied to a relatively cold object, it will give up this same latent heat of fusion at the same constant temperature as it transforms back to the solid state. Alternatively, the chemical can be cooled to its freezing point at which temperature it will liberate its latent heat of fusion as it transforms to a solid. When applied to a relatively warm object, it will absorb this same latent heat of fusion as it transforms back to the liquid state.
Application Number:
JP1511273A
Publication Date:
November 28, 1973
Filing Date:
February 06, 1973
Export Citation:
International Classes:
F16L59/02; A47J36/28; A61F7/00; A61F7/02; A61F7/03; A61F7/10; F24V30/00; F25C1/22; F25C1/24; F25D3/00; F25D5/02; F28D20/02; F28F23/00; F28D; (IPC1-7): C09K3/08