U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Hydropower conversion system

Patent 6420794 Issued on July 16, 2002. Estimated Expiration Date: Icon_subject March 30, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Hydro-air storage electrical generation system
Patent #: 3939356
Issued on: 02/17/1976
Inventor: Loane

Energy storage and conversion technique and apparatus
Patent #: 4058979
Issued on: 11/22/1977
Inventor: Germain

Control system for hydroelectric power station system
Patent #: 4109160
Issued on: 08/22/1978
Inventor: Goto ,   et al.

Electric power generating system
Patent #: 4132901
Issued on: 01/02/1979
Inventor: Crausbay

Windmill having thermal and electric power output
Patent #: 4236083
Issued on: 11/25/1980
Inventor: Kenney

Wave power generator
Patent #: 4258269
Issued on: 03/24/1981
Inventor: Tsubota

Hydroelectric power generating arrangement
Patent #: 4321475
Issued on: 03/23/1982
Inventor: Grub

Wave activated power generation system
Patent #: 4398095
Issued on: 08/09/1983
Inventor: Ono

Charged aerosol wind/electric power generator with solar and/or gravitational regeneration
Patent #: 4433248
Issued on: 02/21/1984
Inventor: Marks

Hydro-electric power plant
Patent #: 4698516
Issued on: 10/06/1987
Inventor: Thompson

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Inventor

Application

No. 822381 filed on 03/30/2001

US Classes:

290/43, Fluid-current motors60/398, Utilizing natural energy or having a geographic feature290/44, Wind290/52TURBOGENERATORS

Examiners

Primary: Waks, Joseph

Attorney, Agent or Firm

Foreign Patent References

  • 2 473 640 FR. 07/14/1981
  • 406137255 JP. 05/14/1994
  • 407039198 JP. 02/14/1995

International Class

F03B 013/10

Abstract

A hydropower conversion system for circulation of water between a delivering reservoir (101 or 201) and a receiving reservoir (102 or 202) through hydro-turbines (112 or 212), pumps (122 or 222), and back-up reservoir (104 or 204). Water in the delivering reservoir is maintained at a constant functioning level by adjusting valve (AV) linked with valve control mechanism (VCM) to adjust the opening and closing of passages (105 or 205) conducting water flowing from the back-up reservoir into the delivering reservoir. Outlets (106 or 206) allow excess water to flow out of the back-up reservoir back down to the receiving reservoir. The hydro-turbines are connected to power machinery (141 or 241). The pumps are driven by a natural energy source (151 or 251). In one embodiment, the receiving and delivering reservoirs are structurally connected; in another embodiment, the two reservoirs are separate reservoirs.

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