Non-Reciprocating Hydraulic Piston Pump

Abstract

It is a positive displacement, non-pulsating hydraulic pump with a double action piston that is non-reciprocating and generates fixed volume with high pressure. The piston moves in one direction through the inside of a toroid chamber in which two movable walls isolate the loading and unloading cavities. When a movable wall opens to give way to the piston the other movable wall splits two cavities within this chamber. When hydraulic pressure is supplied it works as a hydraulic motor, which allows the use of high efficiency and performance of the piston in the production of electric energy. It also substantially reduces size and considerably simplifies the mounting of the piston's operating mechanism. All of this improves performance of the hydrostatic transmission.

What is claimed is: 
     
         1 - Non-reciprocating hydraulic piston pump, characterized by: a piston that is attached to the outer rim a wheel. This piston is driven by the wheel's rotation with a constant direction within a toroidal chamber. Inside this chamber, two movable walls slide in to insulate the loading and unloading cavities and slide out to make way for the piston. On or near the forward facing side (head) of the piston, we find the port of entry, while the discharge port is on the opposite side. 
     
     
         2 - Movable walls system for the non-reciprocating operation of the piston, characterized by: Movable walls which move entering and leaving a cavity prepared for its displacement in the casing of a toroidal chamber. Each wall moves inside this toroidal chamber to insulate cavities for loading and unloading of a piston. The walls are removed from the toroidal chamber to make way for the piston moving through this camera. These movable walls are moved by mechanism synchronized with the movement of the piston. 
     
     
         3 - An evacuation conduit for the displacement of the movable walls characterized by: conduit that communicates the cavity of displacement of the movable wall, according to  claim 2 , with the piston chamber. Through this conduit, the liquid is evacuated when the movable walls move in or out of their displacement cavity. 
     
     
         4 - The non-reciprocating hydraulic piston pump's wheel. Characterized by: a wheel having a piston fixed on a surface location of its outer rim. In the rim and near the piston, or on the piston, has a hole or opening which provides access from this side of the rim toward a side of the wheel. On the other side of the piston, in the rim and close to the piston, or on the piston, has another hole or opening that gives access from this side of the rim to the other side of the wheel. 
     
     
         5 - Toroidal chamber with movable walls for the piston stroke. Characterized by: toroidal chamber formed between: the surface of the rim of wheel, according to  claim 4 , and the inner wall of a casing, where the piston moves driven by the wheel. Movable walls, according to  claim 2 , insulate two cavities in this chamber. 
     
     
         6 - Non-reciprocating piston of double effect. Characterized by: A double-acting piston that moves in one direction, in a toroidal chamber according to  claim 5 . The piston head creates constant expulsion or discharge because it constantly reduces a cavity in this camera. The rear of the piston causes constant load or suction because it constantly increases a cavity in this camera.