US 12,071,946 B2
Fluid pump with dual plungers and related systems and methods
Tom Simmons, Kamas, UT (US); and Courtney Parsons, Taylorsville, UT (US)
Assigned to White Knight Fluid Handling Inc., Kamas, UT (US)
Filed by White Knight Fluid Handling Inc., Kamas, UT (US)
Filed on Jan. 12, 2021, as Appl. No. 17/146,807.
Application 17/146,807 is a continuation of application No. 16/011,015, filed on Jun. 18, 2018, granted, now 10,890,172.
Prior Publication US 2021/0131418 A1, May 6, 2021
Int. Cl. F04B 5/02 (2006.01); F04B 9/133 (2006.01); F04B 43/00 (2006.01); F04B 43/08 (2006.01); F04B 43/10 (2006.01); F04B 43/113 (2006.01); F04B 45/02 (2006.01)
CPC F04B 5/02 (2013.01) [F04B 9/133 (2013.01); F04B 43/0054 (2013.01); F04B 43/084 (2013.01); F04B 45/02 (2013.01); F04B 43/10 (2013.01); F04B 43/113 (2013.01); F04B 2201/0201 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A reciprocating fluid pump for pumping a subject fluid, comprising:
a pump body having an interior cylindrical surface defining a subject fluid chamber;
a first plunger disposed within the subject fluid chamber of the pump body and having a first outer diameter that is substantially equal to an inner diameter of the interior cylindrical surface of the subject fluid chamber, the first plunger including:
a first head portion having the first outer diameter; and
a first shaft extending from the first head portion, the first shaft having a diameter smaller than the first outer diameter; and
a second plunger disposed within the subject fluid chamber of the pump body and having a second outer diameter that is different than the first outer diameter, the second plunger including:
a second head portion having the second outer diameter, the second head portion directly adjoining the first head portion on a side of the first head portion opposite the first shaft; and
a second shaft extending from the second head portion in a direction opposite a position of the first head portion, the second shaft having a diameter smaller than the second outer diameter.