US 12,435,723 B2
Fluid transfer pump
Jiabin Huang, Dongguan (CN); and Xijun Jiang, Dongguan (CN)
Assigned to TECHTRONIC CORDLESS GP, Anderson, SC (US)
Filed by TECHTRONIC CORDLESS GP, Anderson, SC (US)
Filed on Apr. 16, 2024, as Appl. No. 18/636,469.
Application 18/636,469 is a continuation of application No. 17/877,299, filed on Jul. 29, 2022, granted, now 11,988,212.
Claims priority of application No. 202121777240.4 (CN), filed on Aug. 2, 2021.
Prior Publication US 2024/0263633 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F04D 13/06 (2006.01); F04B 17/03 (2006.01); F04B 35/04 (2006.01); F04B 35/06 (2006.01); F04B 39/12 (2006.01); F04B 49/06 (2006.01); F04C 5/00 (2006.01); F04C 11/00 (2006.01); F04C 15/00 (2006.01)
CPC F04D 13/068 (2013.01) [F04B 17/03 (2013.01); F04B 35/04 (2013.01); F04B 35/06 (2013.01); F04B 39/121 (2013.01); F04B 49/06 (2013.01); F04C 5/00 (2013.01); F04C 11/008 (2013.01); F04C 15/00 (2013.01); F04D 13/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fluid transfer pump, comprising:
a housing, wherein an internal space of the housing is divided into a plurality of areas;
a pump unit comprising an impeller, the impeller rotatable about an impeller axis;
an electric motor assembly comprising an electric motor and a fan, wherein the electric motor and the fan are disposed in different areas of the plurality of areas;
a speed change mechanism arranged between the pump unit and the electric motor assembly; and
a power supply compartment configured to receive a removable power supply,
wherein the pump unit, the speed change mechanism, the electric motor assembly, and the power supply compartment are successively arrayed in an extension direction of the impeller axis.