US 11,703,020 B2
Priming pump
Jeffery Fischer, Brimfield, IL (US); Neil Edward Johnston, East Peoria, IL (US); Brenton William Bush, Dunlap, IL (US); Ye Tian, Bloomington, IL (US); and Quinton Burcar, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Feb. 4, 2022, as Appl. No. 17/650,039.
Application 17/650,039 is a continuation of application No. 17/248,667, filed on Feb. 2, 2021, granted, now 11,274,641.
Prior Publication US 2022/0243690 A1, Aug. 4, 2022
Int. Cl. F02M 37/16 (2006.01); F02M 37/00 (2006.01); F02M 37/44 (2019.01); F04B 9/14 (2006.01)
CPC F02M 37/16 (2013.01) [F02M 37/0023 (2013.01); F02M 37/44 (2019.01); F04B 9/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A priming pump, comprising:
a housing;
an inlet passage;
an outlet passage;
a rotary pump inside the housing, the rotary pump having a proximal end facing the inlet passage, a distal end opposite the proximal end, an inlet in fluid communication with the inlet passage, and an outlet in fluid communication with the outlet passage, the inlet and the outlet being formed in the proximal end of the rotary pump; and
a rotatable shaft connected to the rotary pump, the rotatable shaft extending outside of the housing to an exterior of the priming pump and through the distal end of the rotary pump.