(under subclass 41.01) Cooling systems in which a liquid coolant is circulated through plural paths which have at least some portion in common and which are diverse in character.
(1) Note. Typical examples of art are (1) bypass circuits, whether for pump, radiator or jacket; (2) primary and secondary liquid coolant circuits having a common portion in which the fluids mingle; and (3) separate circuits connecting either the pump or radiator to both the top and bottom of the block or jacket.
(2) Note. Mere circulation from one part of a cylinder block or jacket to another is not included, even though the connection is external.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41.09+, for automatically controlled bypass for coolant.
41.2+, especially subclass 41.25, for plural path coolant circulators where vapor forming or condensing or structure especially adapted thereto is claimed.
41.28, for plural circuits to plural cylinders which are either interior manifolds or externally divergent or which vary the flow to different cylinders.
41.72+, for plural circuits which are developed internally of cylinder blocks or jackets and are mere duplicates.
