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US 2022/0018339 A1Published application
Variable stroke pump
AssigneeCw Holdings Ltd
InventorsJianke Wang, Leslie Wise, Xiaonan Zhai, Ronald G. Embry, JR., Milton Anderson
Life of this patent
Estimating the term…
Abstract
A variable stroke high pressure pump is disclosed. The pump uses a wobble plate design with dynamically variable tilt to provide continuous adjustment of pump stroke length and output. Dynamically variable tilt is accomplished using a linearly actuated tilt thruster rotationally coupled to the drive shaft to maintain a selected tilt of the wobble plate through the rotation of the wobble plate.
Claims20
A pump, comprising:
- a drive shaft;
- a wobble plate attached to the drive shaft by a swivel mount to rotate with the drive shaft;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod coupled to a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- and
- a tilt actuator assembly slidably attached to the drive shaft to rotate with the drive shaft, the tilt actuator assembly comprising a slider coupled to a linear actuator and a thruster coupled to the slider and extending toward a second surface of the wobble plate opposite the first surface.
2 more elements
A pump, comprising:
- a drive shaft ;
- a wobble plate attached to the drive shaft by a ball-shaped swivel mount to rotate with the drive shaft;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod slidably disposed against a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- a tilt actuator assembly disposed around the drive shaft, the tilt actuator assembly comprising a slider attached to the drive shaft to rotate with the drive shaft and slide along the drive shaft, and a thruster extending from the slider toward a second surface of the wobble plate opposite the first surface;
- and
- a hydraulic actuator coupled to the slider.
3 more elements
A pump, comprising:
- a drive shaft;
- a wobble plate attached to the drive shaft to rotate with the drive shaft, the wobble plate attached to the drive shaft by a ball-shaped swivel mount using a key;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod disposed against a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- a thrust bearing between each displacement rod and the wobble plate;
- a tilt actuator assembly disposed around the drive shaft, the tilt actuator assembly comprising a slider with an interior surface that has a slot formed therein and a thruster extending toward a second surface of the wobble plate opposite the first surface, the slider attached to the drive shaft by a guide ring;
- a key extending radially outward from the drive shaft and the guide ring, and mated with the slot;
- and
- a hydraulic actuator slidably disposed against the slider.
5 more elements
Dependencies are inferred from the claim text.