Lightweight hose with a helically-wound reinforcing member and method for making the same
CA 2240469 C · Owner: Arney, John W. · Inventors: Haywood, William R.; Arney, John W.; Gooch, Ralph L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lightweight hose (80) is disclosed which is formed from a heat seamable material and includes a helically-wound reinforcing member (88). The hose (80) can be formed in a short definite length and a relatively long, indefinite length by a mandrel and a continuous process, respectively. In one aspect of the invention a lightweight conduit (80) comprises a tubular wall (82) formed of at least one ply of heat seamable material and at least one helical member (88) whereby the at least one ply is bonded to itself and to the at least one reinforcing member (88) without additional adhesive. The invention also relates to lightweight conduits in the form of connectors such as cuffs (140) and T- and …
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 January 2, 1997 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 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.