# US 12,595,807 B2 · Dome blower wheel attachment to minimize water intrusion

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,595,807 B2
- Document ID: US12595807B2
- Status: Granted
- Kind: B2
- Application number: 18/894,831
- Filed: 2024-09-24
- Published: 2026-03-26
- Granted: 2026-04-07
- Earliest claimed: 2024-09-24
- Assignees: Hanon Systems
- Applicants: Hanon Systems
- Inventors: Benjamin D. Kileen; Ted A. Vanden Berg
- Web page: https://patentgrep.com/patent/US12595807B2

## CPC

- F04D 29/281: {for fans or blowers}
- F04D 17/08: Centrifugal pumps
- F04D 25/082: {the unit having provision for cooling the motor}
- F04D 29/329: {Details of the hub}
- F04D 29/4226: {Fan casings}
- F04D 29/5806: {Cooling the drive system}
- F04D 29/584: {cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)}
- H02K 9/06: with fans or impellers driven by the machine shaft
- 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})

## Abstract

A rotatable dome blower wheel attachment that mitigates a risk of water droplets infiltrating a rotor and a motor. The dome blower wheel attachment may be rotatably coupled to the shaft of the blower motor and to the blower motor wheel to protect the rotor from water that is sprayed through the wheel. The coupling also ensures that the dome blower wheel attachment rotates with the blower motor shaft, the wheel, and the rotor. The dome blower wheel attachment may also have impellers coupled to the underside of the dome to direct airflow and water droplets away from the rotor while still protecting the rotor from water that is directed through the wheel.

## Claims

### Claim 1

A blower motor assembly comprising:
a motor housing;
a blower motor disposed in the motor housing;
a rotatable rotor coupled to the blower motor;
a rotatable output shaft coupled to the rotor;
a rotatable blower motor wheel coupled to the output shaft; and
a rotatable dome blower wheel attachment coupled to the output shaft, the dome blower wheel attachment further comprising:
a connection flange having a first end configured to be rotatably coupled to an output shaft of a blower motor assembly; and
a semi-spherical dome coupled to a second end of the connection flange, the dome further comprising:
one or more radially outwardly extending impellers formed on an underside of the dome.

### Claim 2 (depends on 1)

The blower motor assembly according to claim 1, the motor housing further comprising one or more blower motor air inlets formed in the motor housing.

### Claim 3 (depends on 1)

The blower motor assembly according to claim 1, wherein a first gap is formed between the dome and an inner wall of a flange of the blower motor housing.

### Claim 4 (depends on 3)

The blower motor assembly according to claim 3, wherein an area of the first gap is larger than an area of the one or more blower motor air inlets.

### Claim 5 (depends on 3)

The blower motor assembly according to claim 3, wherein a second gap is formed between the dome and a bottom wall of the flange of the blower motor housing.

### Claim 6 (depends on 1)

The blower motor assembly according to claim 1, the connection flange further comprising one or more interlocking ribs formed on the first end thereof and a second end opposite the first end.

### Claim 7 (depends on 6)

The blower motor assembly according to claim 6, the connection flange further comprising an axially extending aperture formed in the connection flange between the first end and the second end thereof.

### Claim 8 (depends on 1)

The blower motor assembly according to claim 1, the dome further comprising a first end and a second end opposite the first end, the second end having an opening formed therein and a larger circumference than a circumference of the first end.

### Claim 9 (depends on 1)

The rotatable dome blower wheel attachment according to claim 1, wherein the one or more radially outwardly extending impellers are arcuate.