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Expired Canadian patentCanada

Strand cutting device for continuous glass fiber winding apparatus

CA 1069483 A · Owner: Nitto Boseki Co. · Inventors: Haneda, Akio; Hanzawa, Takeo; Uchiike, Yukio

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 water jet from a nozzle is laterally directed against a glass fiber strand bridge formed between a loaded spool and an empty spool as a turntable rotatably mounting the two spools is indexed 180° to reverse the positions of the spools between standby and winding stations. The jet is synchronized with the turntable rotation and cleanly severs, the strand so that winding may continue on the empty spool while the loaded spool is removed and replaced with a new empty spool.

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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, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
  • 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—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069483 A
Classification (IPC)B65H54/22 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

Sources & verification

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