Pneumatic human power conversion system based on children's play

• US 7,005,757 B2
• Filed: 02/18/2003
• Issued: 02/28/2006
• Est. Priority Date: 02/18/2003
• Status: Expired due to Fees

• Current Assignee: Shunmugham Rajasekara Pandian
• Original Assignee: Shunmugham Rajasekara Pandian
• Inventors: Pandian, Shunmugham Rajasekara
• Primary Examiner(s): Waks, Joseph
• Application Number:
  US10/369,081
• Publication Number:
  US 20040160059A1
• Time in Patent Office: 1,106 Days
• Field of Search: 290/1.R, 603/25, 184/55.2, 472/134, 472/32, 482/2
• US Class Current: 290/1.00R
• CPC Class Codes: F03G 5/00 Devices for producing mechanical power from muscle energy driving cycles B62M
• CPC Class Codes: F03G 5/06 other than of endless-walk type
• CPC Class Codes: F03G 5/062 driven by humans
• CPC Class Codes: F03G 5/086 using flywheels
• CPC Class Codes: F03G 5/095 with potential energy storage
• CPC Class Codes: F03G 5/103 using springs

Abstract

When large numbers of children play in a playground, part of the power of their play could be usefully harnessed resulting in large energy storage. This stored energy can then be converted for basic, low-power, applications in the school such as lighting, communication, or operating fans. Energy can be produced through the use of pneumatic (i.e., compressed air) systems such as cylinders, motors, valves, and regulators for the conversion of human power of children'"'"'s play in school playgrounds and other public places. The energy of the compressed air can then be converted to electricity for purposes such as lighting and communication. This provides a low-cost, low-resource means of generation of electricity, especially for use in developing countries.

Claims

1. A method for producing power comprising the steps of:

providing a piece of playground equipment equipped with a mechanism for compressing air from an ambient source when children set said equipment in motion;

transmitting said compressed air to a storage tank via a pipeline extending from said mechanism to said storage tank;

storing said compressed air within said storage tank until the air pressure within said tank reaches a pre-set level;

opening an on-off valve located on said storage tank when said air pressure reaches said pre-set level;

releasing said compressed air from said storage tank;

passing said compressed air through a filter unit to an air motor;

actuating said air motor;

generating electricity from an electric generator coupled to said air motor via a gear train assembly;

producing an electric current with said electric generator through cables extending from said generator to a battery;

charging said battery with said electric current, wherein said charged battery provides power to operate appliances;

wherein said playground equipment is a swing comprising a pneumatic rotary actuator for generating means for compressing said ambient air when said swing is swung.

2. The method of claim 1, further comprising the step of, wherein after said air is transmitted to said storage tank, providing an air booster for increasing said air pressure and reducing the air volume within said storage tank.

3. The method of claim 1, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said air motor.

4. The method of claim 1, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said motor.

5. A method for producing power comprising the steps of:

providing a piece of playground equipment equipped with a mechanism for compressing air from an ambient source when children set said equipment in motion;

transmitting said compressed air to a storage tank via a pipeline extending from said mechanism to said storage tank;

storing said compressed air within said storage tank until the air pressure within said tank reaches a pre-set level;

opening an on-off valve located on said storage tank when said air pressure reaches said pre-set level;

releasing said compressed air from said storage tank;

passing said compressed air through a filter unit to an air motor;

actuating said air motor;

generating electricity from an electric generator coupled to said air motor via a gear train assembly;

producing an electric current with said electric generator through cables extending from said generator to a battery;

charging said battery with said electric current, wherein said charged battery provides power to operate appliances;

wherein said playground equipment is a swing comprising a rack and pinion gearing mechanism to actuate a double acting cylinder for generating means for compressing said ambient air when said swing is swung.

6. The method of claim 5, further comprising the step of, wherein after said compressed air is transmitted to said storage tank, providing an air booster for increasing said air pressure and reducing the air volume within said storage tank.

7. The method of claim 5, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said air motor.

11. The method of claim 5, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said motor.

8. A method for producing power comprising the steps of:

providing a piece of playground equipment equipped with a mechanism for compressing air from an ambient source when children set said equipment in motion;

transmitting said compressed air to a storage tank via a pipeline extending from said mechanism to said storage tank;

storing said compressed air within said storage tank until the air pressure within said tank reaches a pre-set level;

opening an on-off valve located on said storage tank when said air pressure reaches said pre-set level;

releasing said compressed air from said storage tank;

passing said compressed air through a filter unit to an air motor;

actuating said air motor;

generating electricity from an electric generator coupled to said air motor via a gear train assembly;

producing an electric current with said electric generator through cables extending from said generator to a battery;

charging said battery with said electric current, wherein said charged battery provides power to operate appliances;

wherein said playground equipment is a merry-go-round comprising an air motor for generating means for compressing said ambient air when said merry-go-round is rotated.

9. The method of claim 8, further comprising the step of, wherein after said compressed air is transmitted to said storage tank, providing an air booster for increasing said air pressure and reducing the air volume within said storage tank.

10. The method of claim 8, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said air motor.

12. The method of claim 8, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said motor.

13. A method for producing power comprising the steps of:

providing a piece of playground equipment equipped with a mechanism for compressing air from an ambient source when children set said equipment in motion;

transmitting said compressed air to a storage tank via a pipeline extending from said mechanism to said storage tank;

storing said compressed air within said storage tank until the air pressure within said tank reaches a pre-set level;

opening an on-off valve located on said storage tank when said air pressure reaches said pre-set level;

releasing said compressed air from said storage tank;

passing said compressed air through a filter unit to an air motor;

actuating said air motor;

generating electricity from an electric generator coupled to said air motor via a gear train assembly;

producing an electric current with said electric generator through cables extending from said generator to a battery;

charging said battery with said electric current, wherein said charged battery provides power to operate appliances;

wherein said playground equipment is a merry-go-round comprising a crank-slider mechanism for use in conjunction with an air cylinder for generating means for compressing said air when said merry-go-round is rotated.

14. The method of claim 13, further comprising the step of, wherein after said air compressed is transmitted to said storage tank, providing an air booster for increasing said air pressure and reducing the air volume within said storage tank.

15. The method of claim 13, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said air motor.

16. The method of claim 13, wherein a cylinder connected to a slider-crank mechanism is interchangeable with said motor.