Hydraulic union assembly
CA 2496327 C · Owner: Hughes, David · Inventors: Hughes, David; Britton, Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic union assembly for joining pipes includes an outer body that threads the , female hub, an inner body or piston that generates an axial force under hydraulic , pressure, a hydraulic port and seals to maintain the hydraulic pressure within the , annular pressure area that operates in an elastic region and continues to actuate , hydraulic pressure after repeated operating cycles and preferably a , mechanical , threaded locking collar to retain axial force after release of hydraulic pressure.
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 7, 2005 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.