(under subclass 41.08) Cooling systems wherein the responsive valve interrupts the flow of fluid coolant from the engine block to a coolant source as in the case of a primary coolant, or from a radiator or heat exchanger to a coolant source in case of a secondary coolant, and directs the coolant to a bypass omitting the coolant source.
(1) Note. The coolant source may be either an exchanger or an external supply, as an intake from the sea.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41.25, for systems in which a liquid coolant bypasses a vapor condenser.
41.29, for bypasses for pump, radiator, etc., not automatically controlled.
SEE OR SEARCH CLASS 236, Automatic Temperature and Humidity Regulation,
34.5, for radiator bypass valves controlled by heat responsive means.
440, Marine Propulsion,
88, for combinations involving boat modification. Inclusion of hull by name only is not sufficient to place a patent in Class 440.
