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Expired Canadian patentCanada

Fluent and non-fluent material mixer

CA 1285271 C · Owner: Roto-Mix, Inc. · Inventors: Neier, Benjamin R.

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 mixer includes a main chamber in which a rotor is located. The rotor includes at least one elongated wiper rigidly connected to a rotor bar for wiping contact with a curved wall portion of the chamber. The rotor bar is prevented from incurring any substantial pivotal movement and thereby maintains a substantial consistent and uniform angle between the wiper and the curved wall portion and wiping contact therewith. The rotor also includes a square in cross section axial center tube to which the rotor arms are connected and a circular in cross section axial drive shaft is positioned in the tube and extends the substantial length thereof. Right angle elements are positioned around 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 June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 28, 1988
GrantedJune 25, 1991
Term endedJune 25, 2008
Patent numberCA 1285271 C
Classification (IPC)B01F15/02 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 28, 1988Patent grantedJune 25, 1991Term endedJune 25, 2008

Sources & verification

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