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Expired Canadian patentCanada

Seat belt tightening device

CA 1297465 C · Owner: Tabata, Hiroshi · Inventors: Saruwatari, Hidetoshi; Okuhara, Hisakasu; Tabata, Hiroshi

CIPO record

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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 tightening device for removing slack in a seat belt when the seat belt is required to positively restrain a passenger, comprising clamp members for clamping a part of the seat belt paid out from a retractor device; a winding member for winding thereonto a portion of the seat belt that is located ahead of the part clamped by the clamp means by a rotary motion; and a drive source for causing a rotational motion of the winding member. The winding member may be either integral with one of the clamp members or separate from both of them. Since the slack of the seat belt is removed simultaneously as the seat belt is clamped the passenger is effectively restrained in case of a vehicle …

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 1, 1987
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297465 C
Classification (IPC)B60R22/46 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 1, 1987Patent grantedMarch 17, 1992Term endedMarch 17, 2009

Sources & verification

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