Switching device for instantaneous water heaters
CA 2129331 A1 · Owner: Gulf Energy Inc. · Inventors: Hochleitner, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Switching Device for Instantaneous Water Heaters There is described a switch device (1) for flow heaters which, as a function of the flow rate, connects and disconnects a heating device (2) provided for the heating of water and for this purpose has a cylindrical switch body (11 11'; 111, 111'), consisting, for instance of metal, which is arranged movably in a vertical flow-conduit section (10, 10'; 141 141') which is, traversed by water, which switch body can be moved by the flowing water, at a pre-established flow rate out of a lower, position of rest into an upper switch position and a position, sensor (16, 16') which detects this change of position of the movable switch body (11, 11'; …
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 February 6, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 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.