Apparatus for suppressing noise generated by a flow of water through a water valve
CA 2204537 C · Owner: Emerson Electric Co. · Inventors: Richmond, James W.; Duhack, Michael R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A noise suppression assembly including a retainer having (1) a retainer body defining a central cavity therein (2) a base flange extending, outwardly from the retainer body and (3) a fluid channel defined therein. The noise suppression assembly further includes a flow control member having a central passage through which the flow of water advances the, central passage of the flow control member being offset from the fluid channel of the retainer. Moreover, the noise suppression assembly also includes a suppresser having (1) a suppresser body (2) a bullet secured, to the suppresser body and (3) a hole defined therein through which the flow of water advances, the hole of the suppresser being …
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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 5, 1997 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2019.
- 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.