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

Tidal generator

Patent 5872406 Issued on February 16, 1999. Estimated Expiration Date: Icon_subject February 16, 2016. 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

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Inventors

Assignee

Application

No. 390304 filed on 02/24/1995

US Classes:

290/53, TIDE AND WAVE MOTORS60/495, MOTOR HAVING A BUOYANT WORKING MEMBER290/42Tide and wave motors

Examiners

Primary: Stephan, Steven L.
Assistant: Ponomarenko, Nicholas

Attorney, Agent or Firm

Foreign Patent References

  • 2 392 174 FR 05/13/1977
  • 2 475 147 FR 02/13/1980
  • 2748977 DE 11/13/1977
  • 2907422 DE. 02/13/1979
  • 3343955 DE 10/13/1983
  • 3720872 DE 06/13/1987
  • 2007314 GB 07/13/1978
  • 2 039 330 GB 08/13/1980
  • 2 267 128 GB 11/13/1993
  • WO 79/00028 WO 01/13/1979

International Class

F03B 013/12

Abstract

The present invention relates to an electric power generator apparatus that generates electrical power from the tidal movements of a body of water by employing multiple energy producing systems. Those energy producing systems include: (1) a moveable tank system associated with hydraulic cylinders in which the upward and downward movements of the tank relative to the tide are used to generate electrical power; (2) an enclosure system in which the controlled inflow and outflow of water between the enclosure and the surrounding body of water is used to generate electrical power; (3) a bellows system in which the effects of the tidal movements are used to force water from the bellows tank through a generator thereby producing electrical power; and (4) a buoyant mass-actuated piston system in which the movement of floating objects (such as docked ships) relative to the tide is used to generate electrical power.

Other References

  • F. O'Kelly: "Harnessing The Ocean's Energy: Are We Ready For A Gift From The Sea?" Hydro Review, vol. X No. 4, Jul. 1991
  • Stewart: Basic Units in Physics, '49 pp. 7-10, 1
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