Fluid cutoff device in a line
CA 1309317 C · Owner: Vescovini, Pietro · Inventors: Vescovini, Pietro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid cutoff device in a line includes a first coupling, having a generally cylindrically shaped outer body and a hollow, generally cylindrically shaped inner body with a first inner sealing surface. The first coupling includes a first shutter valve adapted to be normally biased closed to abut against the first sealing surface to cut off fluid flow through the first coupling. The device includes a second coupling having a generally cyclindrically shaped outer body adapted to sealably translate within the inner body of said first coupling and a hollow, generally cylindrically shaped inner body with a second inner sealing surface. The second coupling includes a second shutter valve and is …
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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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 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.