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Expired Canadian patentCanada

Method of centering and fixing a light-conducting fibre in a light conductor terminal member, a light conductor terminal member produced by that method, and apparatus for carrying out the method

CA 1270136 C · Owner: Marazzi, Silvio · Inventors: Marazzi, Silvio

CIPO record

Overview

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

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Abstract From the Canadian patent

A light conductor terminal member (1) in the form of a centering cylinder (4) comprises a hollow-cylindrical outer portion (10) of relatively hard material, and a core portion (11) of relatively soft material. The core portion (11) has an axial bore (5) for accommodating the end (2) of the fibre. The fibre end (2) is secured concentrically to the outside surface (14) of the centering cylinder (4) by means of, upsetting of material (12). The material upsetting effect is produced by an annular upsetting tool (8) which is moved by means of a punch member (7) in a guide sleeve (6) which can be fitted over the outside surface (14) of the centering cylinder. That centering process permits a …

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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 June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1983
GrantedJune 12, 1990
Term endedJune 12, 2007
Patent numberCA 1270136 C
Classification (IPC)G02B6/24 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedMay 9, 1983Patent grantedJune 12, 1990Term endedJune 12, 2007

Sources & verification

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