# US 2024/0200529 A1 · Configurable multi-purpose cross-flow wind turbine with performance enhancements

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- Number: US 2024/0200529 A1
- Document ID: US20240200529A1
- Status: Published application
- Kind: A1
- Application number: 18/421,392
- Filed: 2024-01-24
- Published: 2024-06-20
- Earliest claimed: 2021-08-09
- Assignees: Velocity Wind Turbines LLC
- Applicants: Velocity Wind Turbines LLC
- Inventors: Jon Paden; Paul Severin
- Web page: https://patentgrep.com/patent/US20240200529A1

## CPC

- F03D 1/0675: {of the blades}
- F03D 3/061: {characterised by their aerodynamic shape, e.g. aerofoil profiles}
- F03D 9/25: the apparatus being an electrical generator (F03D9/22 takes precedence)
- F05B 2240/21: for wind turbines
- F05B 2240/213: of the Savonius type
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- Y02E 10/74: Wind turbines with rotation axis perpendicular to the wind direction
- F03D: WIND MOTORS
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A wind turbine rotor includes an axle, a plurality of primary blades disposed at regular intervals around the axle, and a plurality of secondary blades disposed around the axle between primary blades of the plurality of primary blades. Each secondary blade of the plurality of secondary blades is smaller than each primary blade of the plurality of primary blades.

## Claims

### Claim at position 1

-20. (canceled)

### Claim 21

A turbine comprising:
a plurality of primary blades disposed at regular intervals around an axle;
a plurality of secondary blades disposed around the axle between the primary blades of the plurality of primary blades, each secondary blade of the plurality of secondary blades being smaller than each primary blade of the plurality of primary blades, each secondary blade of the plurality of secondary blades being positioned such that each secondary blade provides a shielding effect to an adjacent following primary blade of the plurality of primary blades; and
a plurality of tertiary blades disposed between the plurality of primary blades and the plurality of secondary blades, each tertiary blade of the plurality of tertiary blades smaller than each of the secondary blades of the plurality of secondary blades, wherein at least the primary blades and the secondary blades alternate contributions to torque transmitted to the axle through redirection.

### Claim 22 (depends on 21)

The turbine claim 21, wherein each tertiary blade of the plurality of tertiary blades has a relative length of 10% to 25% of a diameter of the turbine.

### Claim 23 (depends on 21)

The turbine of claim 21, wherein the primary blades consist of three primary blades and the secondary blades consist of three secondary blades positioned between each primary blade.

### Claim 24 (depends on 21)

The turbine of claim 21 wherein the primary blades consist of five, six, or seven primary blades.

### Claim 25

A turbine system for generating electricity, the turbine system comprising:
an electric generator; and
a turbine comprising:
an axle mechanically coupled to the generator;
a plurality of primary blades disposed at regular intervals around the axle, the plurality of primary blades;
a plurality of secondary blades disposed around the axle between primary blades of the plurality of primary blades, each secondary blade of the plurality of secondary blades being smaller than each primary blade of the plurality of primary blades, each secondary blade of the plurality of secondary blades being positioned such that each secondary blade provides a shielding effect to an adjacent following primary blade of the plurality of primary blades opposite a direction of a rotation of the wind turbine rotor; and
a plurality of tertiary blades disposed between the plurality of primary blades and the plurality of secondary blades, each tertiary blade of the plurality of tertiary blades smaller than each of the secondary blades of the plurality of secondary blades, wherein the primary blades and the secondary blades alternate contributions to torque transmitted to the axle through redirection.

### Claim 26 (depends on 25)

The turbine system of claim 25, wherein each tertiary blade of the plurality of tertiary blades has a relative length of 10% to 25% of a diameter of the turbine.

### Claim 27 (depends on 25)

The turbine system of claim 25, wherein the axle is mechanically coupled directly.

### Claim 28 (depends on 25)

The turbine system of claim 25, wherein the axle is mechanically coupled using a chain and sprocket, gears, a belt and pulley system, a friction drive, a fluid drive, or a continuous variable transmission (CVT).