Patent ID: 6848255
Filing Date: 2005-02-01
Classification: F01P,F15B

Abstract:
1. A fan drive system comprising: a pump; at least one implement arrangement in fluid communication with said pump; a fan drive unit driveably connected to said pump; a modulation valve, said fan drive unit being in fluid communication with said pump through said modulation valve; a signal operator structured and arranged to receive at least one implement signal and a fan drive signal and generate a load signal output, wherein said pump being adapted to modify an output flow of said pump in response to said load signal; a control valve urged to respond under the influence of a sensed condition, said control valve being in fluid communication with said modulation valve and said signal operator through a signal conduit; and a priority operator, said pump being in communication with said at least one implement arrangement through said priority operator, said priority operator being adapted to divide flow between said at least one implement arrangement and said fan drive unit.