US 10,473,101 B2Granted

Pump motor for high temperature fluids

AssigneeNidec Motor Corporation

InventorsMark S. Amalfitano, Jeffrey S. Sherman, Steven R. Palmer, John H. Hussey

Life of this patent

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Abstract

A motorized pump assembly includes a pump and a motor for driving the pump. The pump includes a pump housing that at least in part defines a pump chamber. The motor includes a stator, a rotor rotatable about an axis, a motor housing, and a bearing assembly. The rotor includes a motor shaft extending along the axis. The motor housing includes an endshield that at least in part defines a motor chamber in which the stator and the rotor are at least substantially received. The bearing assembly rotatably supports the motor shaft on the endshield. The pump housing and the endshield are fixed to one another and cooperatively at least in part define an overflow chamber adjacent the pump chamber. The endshield defines a drainage channel fluidly interconnected with the overflow chamber and configured to direct fluid from the overflow chamber away from the bearing assembly.

Claims20

Dependent claims

A motorized pump assembly comprising:

a pump configured to act on a fluid,
said pump including a pump housing that at least in part defines a pump chamber;
and
a motor for driving said pump,
said motor including a stator, a rotor rotatable about an axis, a motor housing, and a bearing assembly,
said rotor including a motor shaft extending along the axis,
said motor housing including an endshield that at least in part defines a motor chamber in which the stator and the rotor are at least substantially received,
said bearing assembly rotatably supporting the motor shaft on the endshield,
said pump housing and said endshield being fixed to one another and cooperatively at least in part defining an overflow chamber adjacent the pump chamber,
said endshield defining a drainage channel fluidly interconnected with the overflow chamber and configured to direct fluid from the overflow chamber away from the bearing assembly,
said endshield defining a pump mounting hole,
said pump mounting hole intersecting the drainage channel.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/368,160Filed 28 Mar 2019 · continuation
Priority: 12 Nov 2015
Published: US 2019/0219054 A118 Jul 2019
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F04C 15/0034
Sealing arrangements in rotary-piston machines or pumps: for other than the working fluid, i.e. the sealing arrangements are not between working…
F04C 2/3447
The inner and outer member being in contact along more than one line or surface: the vanes having the form of rollers, slippers or the like
F04C 5/00
Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently
F04C 15/0038
For other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine: shaft sealings specially adapted…

Family

Application62/254,595Us provisional application · filed 12 Nov 2015
Application15/351,106Parent of this continuation · filed 14 Nov 2016
US 2019/0219054 A1Pre-grant publication · published 18 Jul 2019
US 10,302,082 B2Parent of this continuation
US 2017/0138362 A1Published application
US 10,473,101 B2This patent

From the US filing history. Foreign family members aren’t listed.