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Expired Canadian patentCanada

Plastic leaf spring with at least one spring-eye body or spring-eye section

CA 1235154 A · Owner: Isosport Verbundbauteile Ges.M.B.H. · Inventors: Huber, Christian; Woltron, Herbert

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 plastic leaf spring with spring-eyes at the spring-ends has a spring-eye section (1) or a spring-eye body (15 28) of fiber-, reinforced plastic, with the spring-eye section (1) is integrated in the leaf spring body or the spring-eye body (15 28) is, manufactured separately from it. The spring-eye section (1) or spring-eye body (15, 28) contain each a layer (2 16, 29), of essentially constant thickness with a center section (4 18, 31) wrapping the spring-eye opening and two connecting sections, (3, 17, 32) appropriately essentially parallel to each other with the outside surface of the layer (2 16, 29) forming a, hollow groove (13, 24 33) at at least one transition between the center …

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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 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1985
GrantedApril 12, 1988
Term endedApril 12, 2005
Patent numberCA 1235154 A
Classification (IPC)B60G11/12 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMarch 1, 1985Patent grantedApril 12, 1988Term endedApril 12, 2005

Sources & verification

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