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Expired Canadian patentCanada

Seat belt retractor with cinch mechanism

CA 1289537 C · Owner: Trw Canada Limited · Inventors: Desrochers, Kevin; Befort, Horst U.; Charlton, Keith

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 seat belt retractor includes a spool with seat belt webbing wound thereon. A frame supports the spool for rotation in a belt withdrawal direction or a belt retraction direction. A pawl engages ratchet teeth formed on end portions of the spool to prevent rotation of the spool in the belt withdrawal direction when a predetermined amount of seat belt webbing is withdrawn from the spool. A cam which has a multi-loop cam groove is rotatably driven by a gear train in response to spool rotation. A lever with a cam follower portion in the cam groove is pivoted by the cam to move the pawl into engagement with the ratchet teeth.

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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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 1987
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289537 C
Classification (IPC)B60R22/36 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedAug 25, 1987Patent grantedSep 24, 1991Term endedSep 24, 2008

Sources & verification

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