US 12,352,254 B2
Transfer pump
Steven D. Becker, Inver Grove Heights, MN (US); Mark D. Shultz, Ham Lake, MN (US); Jeremy P. Jurmu, Buffalo, MN (US); David M. Larsen, Albertville, MN (US); and Robert J. Gundersen, Otsego, MN (US)
Assigned to Graco Minnesota Inc., Minneapolis, MN (US)
Filed by Graco Minnesota Inc., Minneapolis, MN (US)
Filed on May 27, 2021, as Appl. No. 17/332,191.
Claims priority of provisional application 63/153,516, filed on Feb. 25, 2021.
Claims priority of provisional application 63/127,241, filed on Dec. 18, 2020.
Claims priority of provisional application 63/032,161, filed on May 29, 2020.
Prior Publication US 2021/0372386 A1, Dec. 2, 2021
Int. Cl. F04B 23/02 (2006.01); F04B 15/02 (2006.01); F04B 17/03 (2006.01); F04B 17/06 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01); F04B 53/22 (2006.01)
CPC F04B 23/023 (2013.01) [F04B 15/02 (2013.01); F04B 17/03 (2013.01); F04B 17/06 (2013.01); F04B 53/147 (2013.01); F04B 53/16 (2013.01); F04B 53/22 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A transfer pump configured to pump a material from a bucket having an opening into the bucket, the transfer pump comprising:
a fluid module comprising:
a mounting frame;
a cylinder extending from the mounting frame in a first axial direction along a pump axis;
a piston extending into the cylinder, the piston configured to reciprocate along the pump axis to pump the material from the bucket; and
a stand connected to the mounting frame and configured to interface with a ground surface to support the transfer pump on the ground surface;
a drive module supported by the fluid module, the drive module comprising:
an electric motor operably connected to the piston by a dynamic interface;
a power source configured to provide power to the electric motor, wherein the power source is a battery that is removably mountable to the drive module; and
a drive frame configured to interface with the mounting frame at a static interface;
wherein an entirety of the drive module is supported by the stand through the mounting frame;
wherein the transfer pump is configured such that a wall of the bucket is disposed radially between the cylinder and the stand; and
wherein the electric motor and the power source are spaced in a second axial direction from the mounting frame, the second axial direction opposite the first axial direction, and the electric motor and the power source are spaced in the second axial direction from a location at which the stand connects to the mounting frame.