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Expired Canadian patentCanada

Anchoring of structures

CA 1099932 A · Owner: Raymond International Builders, Inc. · Inventors: Phares, Lindsey J.; Gendron, George J.

CIPO record

Overview

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

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Abstract From the Canadian patent

Anchoring arrangements for structures such as offshore towers. Wedges which fit down into spaces defined by downwardly converging surfaces fixed to the structure and to an anchor member, respectively, are held in frictional locking engagement by means of bias weights. Two sets of wedge type interlocks are provided in longitudinally displaced relationship and are arranged in reverse order so that downward bias forces on the wedges serves to provide locking against relative movement in opposite directions.

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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 April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 11, 1978
GrantedApril 28, 1981
Term endedApril 28, 1998
Patent numberCA 1099932 A
Classification (IPC)E02B17/02 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJan 11, 1978Patent grantedApril 28, 1981Term endedApril 28, 1998

Sources & verification

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