Crown out-floor out device for a well service rig
CA 2503142 A1 · Owner: Newman, Frederic M. · Inventors: Newman, Frederic M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The technology disclosed herein provides a system that calculates traveling block position, traveling block velocity and weight supported by the traveling block (38). The system takes all these parameters into consideration when slowing and/or stopping the traveling block (38) when it reaches a crown out (104) or floor out position (106). The result is much safer operation of the traveling block (38) on a workover rig (20) as well as on an oil drilling rig.
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 November 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 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.