US 11,686,295 B2
Variable stroke pump
Jianke Wang, Conroe, TX (US); Leslie Wise, Houston, TX (US); Xiaonan Zhai, Humble, TX (US); Ronald G. Embry, Jr., Woodbridge, VA (US); and Milton Anderson, Houston, TX (US)
Assigned to CW HOLDINGS LTD, Acheson (CA)
Filed by CW HOLDINGS LTD, Acheson (CA)
Filed on Sep. 28, 2021, as Appl. No. 17/449,186.
Application 17/449,186 is a continuation of application No. 16/624,861, granted, now 11,162,480, previously published as PCT/US2018/039049, filed on Jun. 22, 2018.
Claims priority of provisional application 62/525,499, filed on Jun. 27, 2017.
Prior Publication US 2022/0018339 A1, Jan. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 1/146 (2020.01); F04B 1/14 (2020.01); F04B 1/295 (2020.01); F04B 25/04 (2006.01); F04B 27/10 (2006.01); F01B 3/00 (2006.01)
CPC F04B 1/14 (2013.01) [F04B 1/146 (2013.01); F01B 3/00 (2013.01); F01B 3/007 (2013.01); F04B 1/295 (2013.01); F04B 25/04 (2013.01); F04B 27/1072 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.