Transfer pump

Patent metadata

Field	Value
Publication number	US-12352254-B2
Application number	US-202117332191-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	May 29, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A transfer pump includes a drive module having electronic components and a fluid module not including electronic components. The drive module provides motive power to a pump of the fluid module to power pumping by the fluid module.

First claim

The invention claimed is:

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.

2. The transfer pump of claim 1 , wherein the mounting frame is configured to extend directly over the opening of the bucket such that the cylinder is disposed within the bucket while the stand is disposed outside of the bucket.

3. The transfer pump of claim 1 , wherein pump reaction forces generated during pumping are reacted through the bucket and the stand.

4. The transfer pump of claim 3 , wherein the pump reaction forces are reacted from the piston and to the drive frame through the dynamic interface, from the drive frame and to the mounting frame through the static interface, and from the mounting frame to the ground surface through the stand.

5. The transfer pump of claim 1 , wherein the drive module further comprises:
a conversion drive connected to the piston to convert a rotational input to a linear output at the piston to cause linear reciprocation of the piston along the pump axis; and
gearing connected to the electric motor and the conversion drive to receive a rotational output from the electric motor and provide a rotational input to the conversion drive.

6. The transfer pump of claim 5 , wherein:
the electric motor rotates on a motor axis;
a first stage of the gearing directly connected to the electric motor rotates on a first gear axis vertically offset from the motor axis; and
a second stage of the gearing directly connected to the conversion drive rotates on a second gear axis vertically offset from each of the motor axis and the first stage axis.

7. The transfer pump of claim 6 , wherein the first stage and the second stage are disposed in a gear chamber defined between the drive frame and a drive plate connected to the drive frame, and wherein the electric motor is connected to a side of the drive plate outside of the gear chamber.

8. The transfer pump of claim 7 , wherein a first stage pinion of the first stage is supported by the drive frame and the drive plate, and wherein a second stage shaft of the second stage is supported by the drive frame and the drive plate.

9. The transfer pump of claim 7 , wherein the electric motor is cantilevered from the drive plate.

10. The transfer pump of claim 1 , wherein the stand connects to the mounting frame at a stand interface location spaced a first radial distance from the pump axis, and wherein the battery is disposed radially further from the pump axis than the stand interface location.

11. The transfer pump of claim 1 , wherein the battery is mounted to the drive module at a location radially outside of a footprint of the bucket.

12. The transfer pump of claim 1 , wherein the battery is mountable to a housing of the drive module by a sliding interface, and wherein the battery is configured to mount to the housing of the drive module by shifting the battery in the first axial direction and radially towards the pump axis, and the battery is configured to dismount from the drive housing by shifting the battery in the second axial direction and radially away from the pump axis.

13. The transfer pump of claim 1 , wherein a housing of the drive module is connected to the drive frame and the electric motor is disposed within the housing, and wherein the housing includes a handle.

14. The transfer pump of claim 1 , wherein the electric motor is disposed axially between the mounting frame and the power source.

15. The transfer pump of claim 1 , wherein the piston includes an upper piston portion having a first diameter and a lower piston portion having a second diameter, wherein the upper piston portion is connected to the drive module at the dynamic interface to receive a reciprocating mechanical input from the drive module, wherein the lower piston portion is connected to the upper piston portion to reciprocate with the upper piston portion.

16. A transfer pump configured to pump a material from a bucket having an opening, the transfer pump powered by a battery, 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 a first side and a second side, the drive module comprising:
an electric motor operably connected to the piston;
a battery mount configured to provide power to the electric motor, the battery mount located on the second side of the drive module and at least partially formed by a housing of the drive module, the electric motor at least partially disposed in the housing of 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 mountable to the bucket such that the first side of the drive module faces the bucket and a wall of the bucket is disposed radially between the cylinder and the stand relative to the pump axis;
wherein the battery mount is positioned to hold the battery vertically higher than the opening of the bucket and not directly over the opening of the bucket; and
wherein the battery mount is configured such that the battery mounts to the battery mount by sliding radially towards the pump axis and vertically towards the ground surface, and the battery mount is configured such that the battery dismounts from the battery mount by sliding radially away from the pump axis and vertically away from the ground surface.

Assignees

• Graco Minnesota Inc

Inventors

• Becker Steven D
• Shultz Mark D
• Jurmu Jeremy P
• Larsen David M
• Gundersen Robert J

Classifications

• F04B53/16

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F04B17/06

  Mobile combinations · CPC title

• F04B53/147

  Mounting or detaching of piston rod · CPC title

• F04B53/22

  Arrangements for enabling ready assembly or disassembly · CPC title

• F04B15/02 Primary

  the fluids being viscous or non-homogeneous · CPC title