Title:
RESPIRATION APPARATUS
Document Type and Number:
Japanese Patent JPH0299078
Kind Code:
A
Abstract:
PURPOSE: To eliminate cooling operation of a respiration device before use, by composing a radiating element by a material with phase transition temperature at a specific temperature and capable of performing at least one heat absorptive solid/solid or solid/liquid phase transition. CONSTITUTION: In order to protect each human being from harmful environment, respiratory gas is supplied from a respiratory gas supply source to individual human being and the gas is cooled by a radiating element made of a material with the phase transition temperature 20-100 deg.C and capable of performing one of heat absorbing solid/solid or solid/liquid phase transition. The material can be a polymer of an organic compound such as camphene, naphthalene or stearic acid or, for example, a metal alloy such as Wood's metal (50% of bismuth, 25% of lead, 12% of tin and cadmium 12.5%). A preferable material is wax, more preferably wax with a melting point of 20-100 deg.C.
Inventors:
SUTANRII JIYON BETSUKAA
Application Number:
JP21512289A
Publication Date:
April 11, 1990
Filing Date:
August 23, 1989
Export Citation:
Assignee:
BRITISH PETROLEUM CO
International Classes:
A62B7/10; A61M16/00; A62B9/00; A62B17/04; A62B23/02; (IPC1-7): A61M16/00; A62B7/10
Attorney, Agent or Firm:
Haruo Hamada
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