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Expired Canadian patentCanada

Cyclone separator

CA 1269952 C · Owner: Prendergast, Gavan J.J. · Inventors: Prendergast, Gavan J.J.

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 cyclone separator (10) having an inlet with inner and outer profiles (84, 82), viewed in section transverse to the separator axis. This location of any particular point on the outer profile (82) is defined by a vector contained in a plane normal to the separator axis, and having its origin at a location (C) where the outer profile meets the adjacent inner circumference (86) of the separator. As the magnitude of the vector (T) increases, an angle (.THETA.) between the vector (T) and a tangent (92) to the circumference (C) which passes through location (C) never decreases and never becomes less than zero. The location of any particular point on the inner profile (84) is defined by a vector …

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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 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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.
FiledJanuary 22, 1985
GrantedJune 5, 1990
Term endedJune 5, 2007
Patent numberCA 1269952 C
Classification (IPC)B04C5/08 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedJan 22, 1985Patent grantedJune 5, 1990Term endedJune 5, 2007

Sources & verification

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