Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01P
COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
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F01P7/02
the coolant being cooling-air
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F01P7/04
by varying pump speed, e.g. by changing pump-drive gear ratio
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F01P7/048
using electrical drives
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