Hydraulic Thruster

A hydraulic thruster system for providing an axial force, comprising:

• a motor;
• a pump, wherein the pump is driven by the motor;
• and
• a hydraulic thruster comprising:
• a cylinder comprising a plurality of cylinder pistons;
• a shaft comprising a plurality of shaft pistons;
• a plurality of first pressure chambers;
• a plurality of second pressure chambers;
• and
• a fluid disposed within the plurality of first pressure chambers or within the plurality of second pressure chambers,
• wherein the plurality of shaft pistons are disposed within the cylinder, between the plurality of cylinder pistons to form the plurality of first and second pressure chambers,
• wherein the shaft further comprises a first fluid passage connected to the pump and to the plurality of first pressure chambers, and a second fluid passage connected to the pump and to the plurality of second pressure chambers, and
• wherein the fluid is pumped between the plurality of first pressure chambers and the plurality of second pressure chambers.

A hydraulic thruster system for providing an axial force, comprising:

• a motor;
• a pump, wherein the pump is driven by the motor;
• and
• a hydraulic thruster comprising:
• a cylinder comprising a two cylinder pistons;
• a shaft comprising a shaft piston;
• a first pressure chamber;
• a second pressure chamber;
• and
• a fluid disposed within the first pressure chamber or within the second pressure chamber,
• wherein the shaft piston is disposed within the cylinder, between the two of cylinder pistons to form the first and second pressure chambers,
• wherein the shaft further comprises a first fluid passage connected to the pump and to the first pressure chamber, and a second fluid passage connected to the pump and to the second pressure chamber, and
• wherein the fluid is pumped between the first pressure chamber and the second pressure chamber.