Combination in line air-filter/air-oil separator/air-silencer
CA 2114550 C · Owner: Walker Design Inc. · Inventors: Walker, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The combination apparatus (20) silences and filters air flow and separates air-contaminant mixtures. An air filter (100) joins an annular housing (22) which has an outer wall (24) and a channel (26) defining a central axis (28) the channel (26) having, a primary gas inlet (30) coupled to the air filter (100) and a primary gas outlet (32) and a channel wall (34). The apparatus (20) has a secondary inlet port (42) passing through the outer wall (24). A secondary outlet port (46) defines an opening in the channel wall such that there is no straight line flow path between the secondary inlet and the secondary outlet. An air silencer (90) is contained within the channel (26). A passageway …
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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 July 29, 1992 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.