Device for confirming the position of branch pipe opening and pipe lining method using the device
CA 2243572 A1 · Owner: Get Inc. · Inventors: Endoh, Shigeru; Kamiyama, Takao; Yokoshima, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for confirming the position of a branch pipe opening allows a branch pipe opening to be easily located so that a main pipe liner bag can be exactly cut along the branch pipe opening. The device for confirming the position of a branch pipe opening is composed of a holding member having a shape such that the holding member is in close contact with an inner wall of a main pipe when the device is placed in position and a protrusion, formed in a portion of the holding member wherein the protrusion, has an opening substantially conformal to a branch pipe opening and extends beyond an inner surface or beyond the inner surface and an outer surface of the holding member. The device for …
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 July 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2020.
- 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.