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Expired Canadian patentCanada

Power generator

CA 1198159 A · Owner: Berg, George W. · Inventors: Berg, George W.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Apparatus to generate power from tidal rise and fall. The apparatus has a float to rise and fall with the tide. A first shaft is rotatable by movement of the float. A cam plate is rotatable with the first shaft. There is a second shaft with two cam followers spaced apart on the second shaft that contact the cam plate to reciprocate the second shaft. A main pump is drivable by reciprocation of the second shaft to pump liquid to drive a power generating apparatus. The apparatus is compact and efficient and has little or no environmental effect.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 1, 1984
GrantedDecember 17, 1985
Term endedDecember 17, 2002
Patent numberCA 1198159 A
Classification (IPC)F03B13/26 +1 more

Timeline

Timeline From CIPO dates

198519871989199119931995199719992001Application filedFeb 1, 1984Patent grantedDec 17, 1985Term endedDec 17, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.