Float chamber
CA 2040249 C · Owner: Zip Heaters (Australia) Pty Limited · Inventors: Martin, Christopher Roy; Massey, Raymond Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Jumper valve for use in the float chamber of a boiling water unit. The valve consists of a body of circular horizontal cross section having a vertical outer wall. The inner portion of the valve body includes a central circular cut-out seat portion to accommodate a cylindrical seal the wall of the valve seat between the cut-out portion and the outer wall being sloped in the manner of the surface of the frustrum of a cone.
Read the whole patent
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 April 11, 1991 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2013.
- 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.