Shell assemblies for encircling tubular members
CA 2472764 A1 · Owner: Vu, Dan Quoc · Inventors: Chana, Satuinder; Vu, Dan Quoc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shell assembly (1) for securing to a tubular member (50) comprises a first par (2) for locating on the tubular member and second and third parts (4, 6) , respectively hinged at (8) and (10) opposite sides of the first part. The parts (4) and (6) each have engaging means (40) or (42) complementary to that of the other part. Remotely operable means (20) is used to move the parts (4) and (6) and about hinges (8) and (10) to respective positions whereat the engaging means (40) and (42) interengage so that the parts (4) and (6) are secured together. The shell assembly may be employed in subsea operations to support a damaged region of a pipeline or to enable a branch or tee to be …
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 February 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2025.
- 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.