Ball valve
CA 2084721 A1 · Owner: Giacomini, Mario · Inventors: Giacomini, Mario; Giacomini, Mario
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ball valve with a through hole (12) which passes through the ball (6) and is disposed transversely with respect to the passage (7), the hole (12) having at its ends a first and a second seat (13, 14) and accommodating a safety valve (11) comprising a bush (15) housed in the first seat (13) and defining with this seat an aperture (16) for the passage of the fluid, the bush (15) accommodating in a slidable way a valve stem (17) provided with a head (18) at its end facing the second seat (14) while, a closing spring (19) is provided between the bush (15) and the head (18).
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 December 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2014.
- 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.