# US 11,441,567 B2 · Pump

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- Number: US 11,441,567 B2
- Document ID: US11441567B2
- Status: Granted
- Kind: B2
- Application number: 16/491,587
- Filed: 2018-03-01
- Published: 2020-01-02
- Granted: 2022-09-13
- Earliest claimed: 2017-03-08
- Assignees: Hella GmbH & Co. KGaA
- Applicants: Hella GmbH & Co. KGaA
- Inventors: Ingo Geue; Alexander Happe; Theodor Hüser; Norbert Thonemann
- Web page: https://patentgrep.com/patent/US11441567B2

## CPC

- F04D 13/06: the pump being electrically driven
- F04D 13/064: {Details of the magnetic circuit}
- F04D 29/026: {especially adapted for liquid pumps}
- H02K 1/02: characterised by the magnetic material
- H02K 3/30: Windings characterised by the insulating material
- H02K 3/44: Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
- H02K 5/12: specially adapted for operating in liquid or gas (combined with cooling arrangements H02K9/00)
- H02K 15/00: Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- F04D 29/046: Bearings
- F04D 29/2222: {Construction and assembly (F04D29/2211 takes precedence)}
- F04D 29/2266: {for sealing or thrust balance (F04D29/04 and F04D29/16 take precedence)}
- F05D 2230/90: Coating; Surface treatment
- F05D 2260/95: Preventing corrosion
- F05D 2300/611: Coating
- H02K 1/06: characterised by the shape, form or construction
- H02K 3/02: Windings characterised by the conductor material
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A pump for liquids is provided, comprising a pump chamber in which a bucket wheel is mounted on a bearing so that it can rotate, and an electric motor with a stator and a rotor. The stator has stator laminations and coils, and is coated with plastic in some parts and an electric/electronic activation device. The pump is intended to have a long service life and at the same time require as little installation space as possible. This is achieved by the stator laminations of the stator being at least in part electroplated.

## Claims

### Claim 1

A pump for fluids comprising:
a pump chamber;
a bucket wheel mounted in the pump chamber on a bearing for rotation;
an electric motor, the electric motor including a stator and a rotor;
wherein the stator further includes stator laminations and coils, each of the stator laminations including a front side that faces the rotor, a rear side opposite of the front side, and a left side and a right side positioned and located between the front side and the rear side;
wherein the front side of each of the stator laminations is electroplated and is not coated with plastic;
wherein the coils and the rear side, the left side, and the right side of the stator laminations are coated with plastic; and
wherein an electronic activation device is positioned and located in the plastic coating.

### Claim 2 (depends on 1)

The pump of claim 1, wherein the electroplated parts are allocated to a motor gap.