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Expired Canadian patentCanada

Anti-sway trailer hitch

CA 1254246 A · Owner: Hsueh, Paul Y.J. · Inventors: Hsueh, Paul Y.J.

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

A hitch connection is provided for use between a towing vehicle and a trailer and includes structure whereby slight right and left lateral movement of the forward end of the towing vehicle will not be translated into left and right lateral movement, respectively of the forward end of the, trailer and thereby eliminates the tendency of a trailer to sway back and forth during crosswind gusts and as a result of the slip stream of a large vehicle such as a tractor and semi-trailer combination passing a lighter vehicle towing a trailer.

Read the whole patent

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 May 16, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 16, 2006.
  • 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 6, 1986
GrantedMay 16, 1989
Term endedMay 16, 2006
Patent numberCA 1254246 A
Classification (IPC)B60D1/30

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedFeb 6, 1986Patent grantedMay 16, 1989Term endedMay 16, 2006

Sources & verification

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