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Expired Canadian patentCanada

Removable tread belt

CA 1055375 A · Owner: Goodyear Tire And Rubber Company (The) · Inventors: Olsen, Richard J.

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 removable tread installed as an annular belt about the circumference of a tire carcass. The inner surface of the removable tread belt and the outer surface of the tire carcass have an interengaging pattern to interlock the two. The removable tread belt has a plurality of axially oriented metal bars and an inextensible circumferential belt radially outwardly of the bars. The bars and the inextensible belt are encapsulated in a matrix of rubber. The ends of the bars extend outwardly to a point beyond the widest portion of the tire carcass sidewall. The tread belt has a tread pattern on its outer circumferential surface.

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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 May 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 29, 1979
Term endedMay 29, 1996
Patent numberCA 1055375 A
Classification (IPC)B60C27/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMay 29, 1979Term endedMay 29, 1996

Sources & verification

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