Wellbore overshot
CA 2286189 A1 · Owner: Gamper, Joseph William · Inventors: Gamper, Joseph William; Garduno, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An overshot (100) is provided for engaging and retrieving a collapsed coiled tubing in a wellbore. In one aspect the overshot has a body member (102) with a top, a bottom, and a body channel (109 110, 111, 112) therethrough from top , to bottom the body member having a slip chamber (123 124), at least one slip , (121, 122) movably disposed in the slip chamber of the body member and , movable on at least one inclined rail (130) in the slip chamber so that upon , contacting the collapsed coiled tubing upward movement of the body member , results in downward movement of the at least one slip (121 122) which also , moves the at least one slip inwardly in the body member (102) thereby …
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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.