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Expired Canadian patentCanada

Rudder assembly

CA 1052631 A · Owner: Proctor, Douglas B.I. · Inventors: Proctor, Douglas B.I.

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 small boat rudder assembly is disclosed of the type in which, there is provided a rudder blade mounted in a substantially vertical plane on a stock member by a first substantially horizontal pivot so that the, blade is adapted to pivot in the vertical plane between lover and upper conditions. It is often desired to raise the rudder blade while sailing as for, instance in shallow water, and according to the present invention there is, provided a rudder assembly of the type specified having an elongate tiller member which is adapted to extend forwardly of the stock member and is coupled to the rudder blade by a further substantially horizontal pivot which, with the rudder blade in a …

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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 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 17, 1979
Term endedApril 17, 1996
Patent numberCA 1052631 A
Classification (IPC)B63H25/38

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 17, 1979Term endedApril 17, 1996

Sources & verification

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