Scraper for a pipe pig
CA 2099794 C · Owner: Sivacoe, Orlande · Inventors: Sivacoe, Orlande
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scraper for a pipeline pig. The scraper is made from a single metal blank, having a plurality of fins disposed radially about a common central axial member. Each fin includes a scraping end and a connector end. The connector end is connected to the common central axial member, and the scraping end extends circumferentially outward from the connector end. Each scraping end preferably forms a quarter circle, and the fins are connected in plural pairs to the common central axial member with adjacent pairs rotationally offset in relation to each other about the common central axial member, preferably about 45° apart. In use, the scraper is embedded in an elastic pig body.
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 5, 1993 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2015.
- 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.