Casing cutter blade support sleeve
CA 2273396 A1 · Owner: Baker Hughes Incorporated · Inventors: Lynde, Gerald David; Davis, John P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blade support assembly for use with a casing cutter to cut through casing or pipe downhole in a well. A tubular body fits over the casing cutter with , slots aligned, with the pivoting cutter blades. Support plates next to each slot provide support for, the blades during cutting operations. Torque keys and matching torque slots in the, blade support assembly and the casing cutter body transfer torque from the casing, cutter body to the blade support assembly and thence to the blades.
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 May 31, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 31, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2021.
- 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.