Flush valve adjustable adapter
CA 2014343 C · Owner: Pickerrell Daniel A. · Inventors: Inch, John; Pickerrell Daniel A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The flush valve adapter (32) has a tubular body with a lower threaded section (36) which engages a connection ring (70) permanently mounted to an upper sectian of jetway (72). A seal is created between the tank (10) flush valve adapter (32) and jetway (72). The adapter (32) has an upper threaded section (40) which engages a battom threaded end (30) of a standard flush valve. A coaxially spaced sealing ring section (48) has a groove (62) that seats an O-ring (64) that seals against the bottom section (30) of the flush valve to create a seal therebetween. A lock nut (78) is also threaded onto section (30) and abuts against top shoulder (41) of the adapter (32) to lock the flush valve into …
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 April 11, 1990 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.