Patent ID: 9488169
Filing Date: 2016-11-08
CPC Classification: F04B

Claim Text:
1. A system for allocating torque from an engine power output on a primary mover, comprising: a first variable displacement pump operable to drive a first ground effect element; a first coupling between the engine power output of a primary mover and the first variable displacement pump; a second variable displacement pump operable to drive a second ground effect element; a second coupling between the first variable displacement pump and the second variable displacement pump; a variable displacement accessory pump coupled to the second variable displacement pump and operable to power a tool implement; wherein each coupling has a torque load rating; wherein the total torque load applied to the second coupling is the sum of the torque load applied by the accessory pump and second variable displacement pump; and wherein the total torque load applied to the first coupling is the sum of the torque load applied by the accessory pump, the second variable displacement pump and the first variable displacement pump; a controller configured to monitor the torque loads applied to the first coupling and the second coupling using pressure and displacement sensors associated with each variable displacement pump; wherein the controller is configured to control the variable displacement pumps to reduce the displacement of one or more of the variable displacement pumps when the torque load applied to the first or second coupling elements approaches that coupling element's torque load rating.