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Expired Canadian patentCanada

Radial support device for the stay type for a rotary workpiece to be machined, grinder equipped with this device and, if required, with an automatic loading/unloading mechanism and its use particularly for the machining of mill rolls

CA 1296554 C · Owner: Haennig, Robert · Inventors: Paris, Roger; Haennig, Robert; Nesme, Jacques

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Abstract From the Canadian patent

Radial support device of the stay type for, example for a cylindrical surface grinder in which the stay, comprises two arms equipped with fences associated with jacks and is designed in such a way that the fences remain laid against the workpiece during machining for the entire, duration of this, at a pressure which is virtually constant despite the change in size of the workpiece as a result of the removal of material. The grinder is also equipped with an automatic mechanism for picking up the workpieces to be machined from a stocking table by means of manipulators carried by a carriage movable on a beam depositing them on, the machine tool and once machining has been carried out, …

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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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 24, 1987
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296554 C
Classification (IPC)B24B41/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 24, 1987Patent grantedMarch 3, 1992Term endedMarch 3, 2009

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