Pump and drive assembly
AssigneeGraco Minnesota Inc.
InventorsMatthew R. Theisen, Bryan K. Colby, Bryce J. Gapinski, Jeremy P. Jurmu, David M. Larsen, Mark D. Shultz
Life of this patent
Estimating the term…
Abstract
A pump assembly includes a pump module configured to be supported by a fluid tank and a drive module configured to be supported by the pump module. The drive module is mountable to and dismountable from the pump module. The drive module provides a motive force to the pump module to power pumping by the pump module.
Claims20
A pump assembly configured to pump material from a fluid tank having an opening into the fluid tank, the pump assembly comprising:
- a pump module comprising:
- a mounting base;
- a cylinder extending from the mounting base in a first axial direction along a pump axis and configured to be disposed at least partially within the fluid tank;
- and
- a piston assembly extending into the cylinder, the piston assembly configured to reciprocate along the pump axis to pump material from the fluid tank;
- and
- a drive module removably mountable to the pump module, the drive module comprising:
- an electric motor having a stator and a rotor configured to rotate on a rotational axis;
- a drive connected to the electric motor and connected to the piston assembly by a dynamic interface, the drive configured to convert a rotational output of the electric motor to a linear input to the piston assembly;
- and
- a drive module support configured to interface with the mounting base at a static interface, wherein the drive module is supported by the pump module at the static interface.
A pump assembly configured to pump material from a fluid tank having an opening into the fluid tank, the pump assembly comprising:
- a pump module comprising:
- a mounting base;
- a cylinder extending from the mounting base in a first axial direction along a pump axis and configured to be disposed at least partially within the fluid tank;
- and
- a piston assembly extending into the cylinder, the piston assembly configured to reciprocate along the pump axis to pump material from the fluid tank;
- and
- a drive module removably mountable to the pump module, the drive module comprising:
- an electric motor having a stator and a rotor configured to rotate on a rotational axis, wherein the rotational axis is disposed coaxially with the pump axis, and wherein the rotor is disposed directly vertically above the piston assembly;
- and
- a drive module support configured to interface with the mounting base at a static interface, wherein the drive module is supported by the pump module at the static interface.
A pump assembly configured to pump material from a fluid tank having an opening into the fluid tank, the pump assembly comprising:
- a pump module comprising:
- a mounting base;
- a cylinder extending from the mounting base in a first axial direction along a pump axis and configured to be disposed at least partially within the fluid tank;
- and
- a piston assembly extending into the cylinder, the piston assembly configured to reciprocate along the pump axis to pump material from the fluid tank;
- and
- a drive module removably mountable to the pump module, the drive module comprising:
- an electric motor having a stator and a rotor configured to rotate on a rotational axis, the rotor including a permanent magnet array supported by a rotor body of the rotor, the electric motor further including a motor shaft extending through the rotor;
- a bearing assembly connected to the motor shaft to receive a rotational output from the rotor;
- a drive connected to the bearing assembly to receive the rotational output via the bearing assembly, and the drive connected to the piston assembly by a dynamic interface and configured to linearly displace the piston assembly along the pump axis;
- and
- a drive module support configured to interface with the mounting base at a static interface, wherein the drive module is supported by the pump module at the static interface;
- wherein the bearing assembly is disposed directly between the rotor and the piston assembly and wherein the dynamic interface is disposed between the static interface and the bearing assembly.
Dependencies are inferred from the claim text.