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Expired Canadian patentCanada

Shock absorbing member for car body

CA 1305975 C · Owner: Tube Forming Co. Ltd. · Inventors: Kazuhito, Fukazawa

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

This invention relates to a reinforcement member to be mounted internally in the doors of an automobile and more particularlly to the member comprising two parallel flat members and a corrugated member(s) which connect(s) said two parallel members in such a manner as to position the ridges of folds thereof perpendicular to the surfaces of the plate members. The reinforcement member is mounted internally in car doors. When the car receives an impact from the side of the door, the corrugated surfaces of the member can distribute the impact evenly by deforming themselves into a fan-like shape to thereby prevent the door from being abruptly folded at one point.

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledOctober 15, 1987
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305975 C
Classification (IPC)B60J5/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 15, 1987Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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