Patent ID: 6460333
Filing Date: 2002-10-08
Classification: F04B,F04C

Abstract:
A hydraulic pressure transformer for the conversion of an input hydraulic power to an output hydraulic power, said hydraulic pressure transformer comprising:an end cap including an opening with a peripheral surface and a first end face, said end cap further including a plurality of ports opening at said end face and at least one actuation port; a barrel rotatable about an axis, said barrel including a second end face and a plurality of cylinders having respective cylinder ports which open at said second end face; and a port block disposed within said end cap opening between said first end face of said end cap and said second end face of said barrel, said port block rotatable about an axis and having a first face surface, a second face surface and a plurality of ports extending between said first face surface and said second face surface, said ports selectively fluidly interconnecting said plurality of cylinder ports in said barrel with said plurality of ports in said end cap, said port block including a radial periphery defining a generally annular channel with said peripheral surface of said opening, said annular channel in communication with each said actuation port, said port block further including at least one vane extending radially outward from said radial periphery to a position adjacent said peripheral surface of said opening.