Patent Yard Sign in
Expired Canadian patentCanada

Pneumatic vehicle tire

CA 1238562 A · Owner: Continental Gummi-Werke Aktiengesellschaft · Inventors: Praetorius, Siegfried; Rohde, Dieter

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

TITLE OF THE INVENTION:, PNEUMATIC VEHICLE TIRE ABSTRACT OF THE DISCLOSURE:, A belted tire having a respective step at each of the edges of the tread strip, with the edges of the belt extending to below the approximately horizontal surface of the step, In order to avoid undesirable heat formation, and hence to reduce the rolling resistance, a low-damping rubber layer is disposed between two belt plies, with the rubber layer ending prior to the edges of the belt. In these regions, as extensions of the intermediate layers, respective additional rubber strips are provided. Half of the width of a given rubber strip is disposed below the belt plies and the, other half of the width of that strip …

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 June 28, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 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.
FiledAugust 15, 1985
GrantedJune 28, 1988
Term endedJune 28, 2005
Patent numberCA 1238562 A
Classification (IPC)B60C9/18 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 15, 1985Patent grantedJune 28, 1988Term endedJune 28, 2005

Sources & verification

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