FOOT-POWERED ENERGY GENERATOR

• US 20150162803A1
• Filed: 02/20/2015
• Published: 06/11/2015
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: Sole Power, LLC
• Original Assignee: Sole Power, LLC
• Inventors: Stanton, Matthew James, Williams, Spencer, Golden, Arianna, Alexander, Hahna, Stroup, Sarah
• Granted Patent: US 9,190,886 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A43B 3/38 with power sources
• CPC Class Codes: F03G 5/06 other than of endless-walk type
• CPC Class Codes: H02K 7/1853 driven by intermittent forces
• CPC Class Codes: H02K 7/1861 driven by animals or vehicles H02K7/1853 takes precedence

Abstract

A foot-powered energy generation device includes a step plate that moves between an upper position and a lower position in response to the step action of a user. The device also includes an electrical generator, and a gear train that will cause a rotor of the generator to rotate in response to movement of the step plate up and down. A carriage is mechanically interconnected to the step plate and the gear train to cause the rotation of the gear train in response to the step plate motion.

Claims

1. A foot-powered energy generation device, comprising:

a base configured to fit within a footwear item;

a step plate having an upper position and a lower position;

a generator comprising a rotor;

a gear train comprising a first gear and a second gear that are configured so that rotation of the first gear will cause the second gear to rotate, and rotation of the second gear will cause the rotor to rotate; and

a carriage that is mechanically interconnected to the step plate and the first gear so that the carriage will cause the first gear to rotate in response to movement of the step plate between the upper position and the lower position.

2. The device of claim 1, further comprising:

a linkage that mechanically interconnects the step plate to the carriage so that;

when pressure is applied to the step plate so that the step plate moves toward the lower position, the linkage will cause the carriage to move in a first direction away from a first position, and

when pressure is released from the step plate so that the step plate moves up toward the upper position, the linkage will cause the carriage to return to the first position.

3. The device of claim 2, wherein the linkage comprises a spring that is also configured to return the step plate to the upper position when pressure is released from the step plate.

4. The device of claim 1, wherein:

the carriage comprises an opening configured to receive and engage the first gear;

the opening comprises opposing first and second sides and a lateral dimension between the first and sides, wherein the lateral dimension is larger than a diameter of the first gear so that;

when the carriage moves in a first direction away from a first position, the first side of the opening will engage the first gear and cause the first gear to rotate in a direction of rotation, and

when the carriage moves in a second direction to return to the first position, the second side of the opening will engage the first gear and cause the first gear to rotate in the direction of rotation.

5. The device of claim 1, wherein:

the second gear comprises a planetary gear having a center; and

the device also comprises an axis about which the center of the planetary gear and a center of the rotor both rotate.

6. The device of claim 1, further comprising a clutch that is configured to engage the carriage with the gear train and disengage the carriage from the gear train.

7. The device of claim 1, further comprising a clutch that is configured to

cause the first gear to be engaged with the second gear when a speed of rotation of the first gear exceeds a threshold;

and

cause the first gear to be disengaged from the second gear when the speed of rotation of the first gear does not exceed the threshold.

8. The device of claim 1, wherein the generator comprises a radial permanent magnet generator or an axial permanent magnet generator.

9. The device of claim 5, wherein:

the gear train also comprises at least one intermediary gear that is positioned and configured to mechanically interconnect the first gear to the planetary gear; and

the gear train is configured so that each gear in the gear train is positioned along a plane that is substantially parallel to the base.

10. The device of claim 1, further comprising the footwear item, and wherein the footwear item comprises an insole or a heel.

11. The device of claim 1, wherein the step plate comprises a surface of a linkage that mechanically interconnects the step plate to the carriage so that:

when pressure is applied to the linkage so that the linkage is compressed, the linkage will cause the carriage to move in a first direction away from a first position, and

when pressure is released from the step plate so that the step plate moves up toward the upper position, the linkage will cause the carriage to return to the first position.

12. A footwear item having energy generating capability, comprising:

a housing that is configured to be worn on a foot, comprising;

a step plate having an upper position and a lower position,

an electrical generator comprising a rotor,

a gear train that is engaged with the rotor so that rotation of at least a portion of the gear train will cause the rotor to rotate, and

a carriage that is mechanically interconnected to the step plate and the gear train so that the carriage will cause components of the gear train to rotate in response to movement of the step plate between the upper position and the lower position.

13. The footwear item of claim 12, wherein the wearable housing comprises an insole, a heel or a sole.

14. The footwear item of claim 12, further comprising:

a linkage that mechanically interconnects the step plate to the carriage so that;

when pressure is applied to the step plate so that the moves toward the lower position, the linkage will cause the carriage to move in a first direction, and

when pressure is released from the step plate, the step plate moves up toward the upper position, and the linkage will cause the carriage to return to the second position.

15. The footwear item of claim 14, wherein the linkage comprises a spring that is also configured to move the step plate toward the upper position when pressure is released from the step plate.

16. The footwear item of claim 12, wherein:

the carriage comprises an opening configured to receive and engage a first gear of the gear train;

the opening is configured to receive the first gear and comprises opposing first and second sides and a lateral dimension between the first and sides, wherein the lateral dimension is larger than a diameter of the first gear so that;

when the carriage moves in a first direction away from a first position, the first side of the opening will engage the first gear and cause the first gear to rotate in a direction of rotation, and

when the carriage moves in a second direction to return to the first position, the second side of the opening will engage the first gear and also cause the first gear to rotate in the direction of rotation.

17. The footwear item of claim 12, wherein:

the gear train comprises a planetary gear having a center; and

the device also comprises an axis about which the center of the planetary gear and a center of the rotor both rotate.

18. The footwear item of claim 12, further comprising a clutch that is configured to engage the carriage with the gear train and disengage the carriage from the gear train.

19. The footwear item of claim 12, further comprising a clutch that is configured to:

cause a first gear of the gear train to engage with another component of the gear train when a speed of rotation of the first gear exceeds a threshold; and

cause the first gear to disengage from the other component of the gear train when the speed of rotation does not exceed the threshold.

20. The device of claim 12, wherein the electrical generator comprises a radial permanent magnet generator or an axial permanent magnet generator.

21. The footwear item of claim 18, wherein:

the gear train also comprises a first gear and at least one intermediary gear that is positioned and configured to mechanically interconnect the first gear to the planetary gear; and

the gear train is configured so that each gear in the gear train is positioned along a plane that is substantially parallel to the base.

22. The footwear item of claim 12, wherein the step plate comprises a surface of a linkage that mechanically interconnects the step plate to the carriage so that:

when pressure is applied to the linkage so that the linkage is compressed, the linkage will cause the carriage to move in a first direction away from a first position, and

when pressure is released from the step plate so that the step plate moves up toward the upper position, the linkage will cause the carriage to return to the first position.

23. The footwear item of claim 12, further comprising a power port configured to direct energy that is generated by the generator to a conductor for delivery to an energy storage device.