Wave energy converter with rotary hydraulic spring

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United States of America Patent

PATENT NO 9115686
APP PUB NO 20120247098A1
SERIAL NO

13430599

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The generally up and down movement of a reaction mass is converted into rotary motion which is used to drive a rotary hydraulic spring comprised of a rotary hydraulic pump motor and an accumulator to produce a “spring” function. The invention is particularly applicable to wave energy converters (WECs) having a reaction mass which needs to be coupled to a spring to ensure its oscillation and to cause it to be centered about its center of travel. The linear up-down motion of a reaction mass may be converted via a linear-to-rotary translator to rotary motion to drive a rotary hydraulic pump/motor so as to provide spring action to the reaction mass and ensure its oscillation and proper positioning.

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Patent Owner(s)

Patent OwnerAddress
OCEAN POWER TECHNOLOGIES INC1590 REED ROAD PENNINGTON NJ 08534

International Classification(s)

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  • 2012 Application Filing Year
  • F03B Class
  • 303 Applications Filed
  • 216 Patents Issued To-Date
  • 71.29 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201220132014201520162017201820190255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stewart, David B Cranbury, US 43 812

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Patent Citation Ranking

  • 4 Citation Count
  • F03B Class
  • 6.49 % this patent is cited more than
  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges54913351101 - 1011 - 2021 - 3031 - 4041 - 5071 - 8002.557.51012.51517.52022.52527.53032.53537.54042.54547.55052.5

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 25, 2027