Multiport plug valve with selectable port exclusion
CA 2334909 A1 · Owner: H-Tech, Inc. · Inventors: Jensen, Robert M.; Teter, Edward C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diverter valve (10) includes a cup-shaped substantially cylindrical body , (12) with a plurality of ports (14 16, 18) extending from the side of the body (12), each communicating with a hollow in the body (12). A disk shaped top (20) is held in sealing engagement with the body (12). A plug (52) is rotatably positioned within the body (12) and seals against the body (12) for closing a selected one of the plurality of ports (14 16, 18). A portion (50) , of the plug (52) extends through the top (20) to permit the plug (52) to be turned. A handle (24) is coupled to the extending portion (50) of the plug (52). The handle (24) has an adjustable stop (38) for limiting the rotation of 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 June 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2021.
- 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.