Enhanced vacuum assisted toilet
CA 2060331 A1 · Owner: Fluidmaster, Inc. · Inventors: Hennessy, Arnold
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water saver toilet is provided of the type that, applies a vacuum to the toilet bowl outlet to assist flushing, which can apply a considerable vacuum in a toilet of low height. The vacuum source (60, Fig. 1) is coupled to the pressured water inlet (44) that supplies water under a pressure of a plurality of pounds per square inch to fill the tank after each flushing, with the pressure of the water being used to energize the vacuum source. A prior art type of tank inlet valve (16) is used, of the type that has a float (42) that drops and opens the valve when the tank water level drops at the beginning of flushing. The opening valve directs pressured water through a conduit (72) to the …
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 January 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 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.