Expandable shifting tool
CA 2384209 A1 · Owner: Patel, Dinesh R. · Inventors: Read, Dennis M.; Martinez, Ricardo; Patel, Dinesh R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Embodiments of the present invention disclose apparatus and methods that can be, used to mechanically actuate a downhole tool with an expandable shifting tool. One, embodiment of the invention is an expandable shifting tool comprising a housing having, an outer diameter and a plurality of radially extendable elements. The radially extendable, elements are longitudinally separated from each other and each extendable element is at, least partially contained within the housing. The extendable elements are capable of, moving between an extended position and a retracted position and are biased towards the, extended position.
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 April 30, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2024.
- 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.