Continuous self-cleaning drilling fluid tank
CA 2416076 A1 · Owner: Cabelka, Brian Clarence · Inventors: Cabelka, Brian Clarence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous self-cleaning drilling fluid tank includes a liquid impervious receptacle having a bottom and a peripheral sidewall. Unprocessed drilling fluid requiring reconditioning are diverted into the receptacle. A processed drilling fluid outlet is provided, whereby reconditioned drilling fluid passes from the receptacle. A plurality of scraper blades are provided which are carried by a continuous loop conveyor positioned immediately adjacent to the bottom. A sludge outlet is provided whereby sludge passes from the, receptacle. The continuous loop conveyor is driven to cause the scraper blades to scrape sludge resting on the bottom toward the sludge outlet.
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 January 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2025.
- 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.