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Expired Canadian patentCanada

Apparatus for recovering, by means of a pipelaying craft, pipes laid on deep sea beds

CA 1092375 A · Owner: Saipem S.P.A. · Inventors: Scodino, Ambrogio

CIPO record

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

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Abstract From the Canadian patent

A PIPELAYING CRAFT, PIPES LAID ON DEEP SEA BEDS" Abstract of the Disclosure, For lifting from deep sea beds a pipeline trunk a device, is disclosed which is composed by a compact framework of square outline which supports a sealing and pulling head and paired jaw assemblies having sloping surface seats to engage the outer surface of the pipe to be lifted said jaws being actuated by hydraulic and pneumatic motive means so as to grip the pipe surface firmly. A pipe-cutting device is also provided, which has two discrete cutting units, and the sealing and pulling head is removable from said frame and can be both slid and rotated as to position it correctly coaxially with the pipe trunk.

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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 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1979
GrantedDecember 30, 1980
Term endedDecember 30, 1997
Patent numberCA 1092375 A
Classification (IPC)F16L55/13 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedMarch 26, 1979Patent grantedDec 30, 1980Term endedDec 30, 1997

Sources & verification

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