Hydraulic port fittings
CA 2122151 C · Owner: Nwd International, Inc. · Inventors: Williamson, Nigel D. L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention related to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port (201) with a tube (203) having a threaded connecting portion (202). The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer clement. For connecting a tube (203) directly in the port (201) one embodiment of the invention, includes an outwardly extending lip (206) on an expanded portion of the tube (203) and a tube nut rim (211) wherein the tube nut engages the expanded portion and by tightening the tube nut (204) the tube lip (206), de-forms on the tapered port (215) and the tube nut rim (211) deforms on both the tapered port (215) …
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 October 22, 1992 and granted January 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 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.