Flexible pipe
CA 1163212 A · Owner: Mobil Oil Corporation · Inventors: Merriman, Horace B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flexible Pipe, This invention relates to a flexible pipe which is designed to withstand continual flexing and bending of the pipe and also to withstand high internal pressures in the order of 5000/70001bs per sq.inch. The pipe (Figure 7) consists of a stainless steel spiral wound core tube 39 encased in two layers of inner plastic liner 37 and 38. The flexible element of the pipe which withstands the high, pressures, consists of a series of rings 120 which have spigot connections and flanges 123. Adjacent rings 120 are held together by keepers 128 which have radially inwardly projecting engagement features with wedge-shaped surfaces. The keepers are staggered circumferentially around the …
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
- Granted March 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.