# US 7,744,345 B1 · Wind power generator

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- Number: US 7,744,345 B1
- Document ID: US7744345B1
- Status: Granted
- Kind: B1
- Application number: 11/818,855
- Filed: 2007-06-18
- Granted: 2010-06-29
- Earliest claimed: 2007-06-18
- Inventors: Victor E. Pohribnak
- Web page: https://patentgrep.com/patent/US7744345B1

## CPC

- F03D 3/068: {mechanically controlled by the rotor structure}
- Y02E 10/74: Wind turbines with rotation axis perpendicular to the wind direction
- F03D: WIND MOTORS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A vertical axis wind turbine provides a rotor assembly which rotates on bearing assemblies affixed to a rotor shaft supported by a base, the rotor assembly having vertical blades mounted between top and bottom plates, and power takeoff means to provide power by direct mechanical linkage or to drive an electrical generator. The rotor assembly is partially enclosed by a housing. Attached to the side of the housing is a wind vane. Attached to the bottom side of the housing are rollers. The wind vane, in combination with the rollers, act to rotate the housing to a position that will permit the wind to act upon the exposed vertical blades.

## Claims

### Claim 1

A vertical axis wind turbine, comprising:
a base having a thrust bearing disposed therein;
a rotor shaft having an upper shaft end and a lower shaft end, the lower shaft supported by the thrust bearing;
a rotor assembly rotatably mounted on the rotor shaft, the rotor assembly further comprising:
a top plate;
a bottom plate;
a plurality of vertical blades disposed within said top plate and said bottom plate and affixed thereto; and
power takeoff means;
a housing assembly rotatably attached to the rotor shaft through a upper bearing assembly and a lower bearing assembly, the housing assembly further comprising:
a top plate;
a bottom plate;
a side plate;
a wind vane;
a plurality of rollers disposed upon the bottom side of the bottom plate;
a ring gear; and
a drive motor.

### Claim 2 (depends on 1)

The device of claim 1, wherein said power takeoff means further comprises:
a drive pulley rigidly attached to said rotor assembly;
a driven pulley mounted on an input shaft of an electrical generator; and
an endless belt connecting said drive pulley to said driven pulley.

### Claim 3 (depends on 1)

The device of claim 1, wherein the outside end of the vertical blades are slightly curved.

### Claim 4 (depends on 1)

The device of claim 1, wherein the side plate of the housing is of a arcuate formation with the top end of the side plate fixedly attached to approximately one-half of the outside edge of the top plate of the housing and with the bottom end of the side plate fixedly attached to approximately one-half of the outside edge of the bottom plate of the housing.

### Claim 5 (depends on 1)

The device of claim 1, wherein the plurality of rollers disposed upon the bottom side of the bottom plate of the housing allow the housing to rotate about the base.