Hose construction, coupling therefor and methods of making the same
CA 2066255 C · Owner: Holden, Homer N. · Inventors: Foster, Randy C.; Sanders, John D.; Holden, Homer N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New hose construction, new couplings therefor and new methods of making such hose constructions and new methods of making such couplings are provided herein. In one embodiment, an improvement is provided in a hose construction including a tubular hose having an inner peripheral surface and an outer peripheral surface and a coupling, secured to one end of the tubular hose. The improvement is one wherein the innerperipheral surface means of the tubular hose includes an inner corrugated hose which is made of polymeric material and which has inwardly-convex projections with recesses therebetween and which extends from one end of the tubular hose to the other endthereof. In addition the coupling …
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 August 30, 1990 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2012.
- 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.