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Expired Canadian patentCanada

Tread splicer

CA 1278735 C · Owner: Riggs, Robert S. · Inventors: Rex, William A.; Riggs, Robert S.

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 tread splicer (10) including two rows (60,64) of splicing blade assemblies (68) mounted with the blades (76) of one row (60) tilted toward and overlapping the blades (76) of the other row (64). Each of the blade assemblies (68) is operable independently to control the pressure applied to selected portions of the tread ends. Guide rollers (54,56,58) on the tread splicer (10) provide stitching of the tread (14) as well as positioning of the blades (76) relative to the tread (14) and tire building machine drum (18).

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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
  • 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 9, 1987
GrantedJanuary 8, 1991
Term endedJanuary 8, 2008
Patent numberCA 1278735 C
Classification (IPC)B29D30/28 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 9, 1987Patent grantedJan 8, 1991Term endedJan 8, 2008

Sources & verification

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