Ball valve
CA 1295983 C · Owner: Horvei, Knut · Inventors: Horvei, Knut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ball valve device for subsea applications particularly, intended to be connected into subsea pipeline systems which lead a flowing medium (gas and/or oil) in subsea condition should be, capable of being dismantled for inspection and maintenance. The ball arrangement of the valve consists of an upper ball member (3), and a lower ball member (4) in which its upper ball member (3), includes the main packings of the valve whiles the lower, ball member (4) includes two axial withdrawable sleeves (13) which can, when the valve is open, be withdrawn outwards for intervention with guiders in the valve housing (1) and thereby form a tight, continuous passageway which extends from one of the …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
- Granted February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
- 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.