Manually operated vacuum flush water closet
CA 2028845 A1 · Owner: Precision Control Inc. · Inventors: Brian, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
15, ABSTRACT of the DISCLOSURE, A vacuum flush water closet having the bowl rim and pedestal, made of china. The water closet has a self contained flushing water dispensing valve and sewage discharge valve control system,operatively mounted around and under the bowl. The water closet is secured to the floor by use of a base mounting plate. The sewage discharge valve is fixedly secured to the underside of the bowl and the said valve is manually opened and spring closed. Flushing water is supplied through a flexible flush tube mounted around the underside of the upper rim of the bowl. The flushing water is directed by a vacuum operated water dispensing valve. The operation of the water …
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 March 13, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2012.
- 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.