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Expired Canadian patentCanada

Device for cutting an electrode casing

CA 1262090 C · Owner: Vegge, Olaf T. · Inventors: Vegge, Olaf T.

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

The present invention relates to a device for cutting the casing on baked carbon electrodes. The device comprises a ring (1) which is freely suspended about the electrode. At least two clamping shoes (7) having vertical extending cutting edges (17) are pivotably suspended to the ring (1). The clamping shoes (7) can be pressed against the casing (3) by means of first hydraulic cylinders (14). On the top of the ring (1) a chain (18) having a plurality of cutting wheels (19) is arranged. One end of the chain (18) is secured to a second hydraulic cylinder (26) and the other end is secured to the piston (27) of the second hydraulic cylinder (26), whereby the chain (18) can be tightened about the …

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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 October 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 3, 2006.
  • 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 7, 1986
GrantedOctober 3, 1989
Term endedOctober 3, 2006
Patent numberCA 1262090 C
Classification (IPC)B23D21/00 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMay 7, 1986Patent grantedOct 3, 1989Term endedOct 3, 2006

Sources & verification

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