THERMOS FLASK Russian patent published in 2006 - IPC A47J41/02 

FIELD: medicine, food industry, production of glassware.

SUBSTANCE: invention provides transfer of head different over surface of thermos flask from source of radiant energy found from out side of thermos flask to substance inside thermos flask through walls. This is provided owing to the fact that flask has housing consisting of at least inner and outer envelopes. At least in one of cross sections thermos has line of outer limit of section of outer envelope and line of inner limit of section of inner envelope. Line of outer limit of section of outer envelope contains two points of possible pairs of points located at maximum distance from each other, and line of inner limit of section of inner envelope contains two points of possible pairs of points located at maximum distance from each other, and straight line drawn through points on plane of section located at maximum distance from each other and located on line of outer limit of section of outer envelope passes at angle from 0.017 rad to 3.123 rad to straight line drawn on plane of section through points located at maximum distance from each and located on line of inner limit of section of inner envelope.

EFFECT: improved efficiency of thermos flask.

10 cl, 6 dwg