(under subclass 104.11) Apparatus wherein a first and a second retained body of material, each forming part of the apparatus, act as heat storage or carrier means for the apparatus and each flow from an area where heat is added to an area where heat is removed.
(1) Note. Apparatus including a retained body of Freon and a retained body of oil, even if in direct contact, is not included in this subclass unless there is a specific disclosure that the purpose of each material is to act as a heat storage means. The normal purpose of the oil in such a mixture is to lubricate the moving parts of the apparatus.
(2) Note. Each retained body of material must be of the type found in subclass 104.11.
