Integral pup joint
CA 2255630 A1 · Owner: Fmc Technologies, Inc. · Inventors: Crawford, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pup joint (110) is provided which comprises a length of pipe (112) a female , sub (116) integral with one end of the pipe (112) and having external threads (124) formed thereon, a male sub (114) integral with the other end of the pipe (112), a wing nut (126) for threadedly connecting the male sub (114) to the female sub (116), a set of retainer segments (130) for retaining the wing nut (126) on the pup joint (110), and a retention shoulder (142) formed on the male sub (114) to maintain the wing nut (126) and retainer segments (130) on the male sub (114). In a preferred embodiment of the invention the pipe (112) , and the male and female subs (114 116) are comprised of a single …
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 May 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2019.
- 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.