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Expired Canadian patentCanada

Grinding wheel for producing internal profilings

CA 2016730 C · Owner: Kapp Gmbh & Co. Kg, Werkzeugmaschinenfabrik · Inventors: Lorenz, Manfred

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 grinding wheel for producing internal profilings is provided. A grinding disk is disposed at the front end of a rod-like grinding machine arm at the respective angle of slope of the internal profiling that is to be produced. The grinding disk is adapted to be driven by a drive shaft which is, disposed at the other end of the arm via a drive, that extends through the arm. In order with a, simple construction and the use of a disk having a profile that corresponds to the internal profiling that is to be produced, to make it possible to set the grinding disk to the respective angle of slope of the internal profiling that is to be produced the drive includes a belt that is disposed in the arm …

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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

  • Filed May 14, 1990 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2012.
  • 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 14, 1990
GrantedJune 23, 1998
Term endedMay 14, 2010
Patent numberCA 2016730 C
Classification (IPC)B23F5/06 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 14, 1990Patent grantedJune 23, 1998Term endedMay 14, 2010

Sources & verification

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