Water closet volume reducer
CA 2099199 C · Owner: Plumridge, John E. · Inventors: Plumridge, John E.; Sweeny, H. Dermot; Knipe, Harry G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a device for reducing the volume of water flushed from a water closet. A rectilinear container has front rear, side and bottom, walls. An elongated suspension member has a hook at an upper end thereof for engaging the rim of the water closet and at its lower end it can engage bearing means on one of the rear or side walls of the container to suspend the container within the water closet. The volume of the container can be adjusted since one of the front or side walls has a lower fixed portion and an upper sliding portion the sliding portion, being vertically slidable relative to the fixed portion. The normal flush volume of the water closet is reduce by the volume of …
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 June 25, 1993 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2015.
- 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.