Centralizer for internal pipe inspection device
CA 2128619 C · Owner: Ystueta, Linda T. · Inventors: Carapezza, Joseph R.; Ystueta, Linda T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Internal pipe inspection, apparatus (10) is disclosed having a novel collapsible centralizer, mechanism (11) for an in-line pipe inspection head. The inspection, apparatus is insertable into different size pipelines (12) through a small, lateral service opening (60). The apparatus includes a compact inspection pipe head (16) having a viewing, assembly (18) for imaging the interior of the pipe. The head is, sized to pass through a standard lateral service opening substantially, less in diameter than the diameter of the pipe. Various collapsible, centralizing members (12) are described for positioning the pipe, inspection head viewing assembly substantially concentric with an, axis of the …
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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 April 20, 1993 and granted September 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 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.