Flush valve chock
CA 2128286 C · Owner: Visco, John · Inventors: Visco, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chock for holding open a valve member of a flush valve assembly of a portable toilet having an outlet for communicating the toilet with a storage tank the valve, member being associated with the outlet and movable between a closed position wherein the valve member blocks the outlet and an open position wherein the outlet is unblocked and, wherein the valve member is biased toward the closed position, the chock including a body member adapted for placement within the outlet so as to hold the valve member in the open position and allow communication between the outlet and the storage tank, and a handle attached to the body member for placing the body member in the outlet and for removing …
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 July 18, 1994 and granted August 4, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2016.
- 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.