Core monitoring device
CA 1261053 A · Owner: Db Stratabit (Usa) Inc. · Inventors: Park, Arthur; Wilson, Bobby T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A well coring apparatus is provided with the capability for monitoring the length of the core in the inner barrel of a core barrel and the rate at which the core enters the inner barrel. The device includes a Sonic Core Monitor which is disposed in the upper end of the inner barrel and a piston which is disposed in the lower end thereof. The Sonic Core Monitor generates an ultrasonic pulse that is transmitted down to the surface of the piston and reflected back up to the Sonic Core Monitor. The time between the transmitted and received pulse is then measured and distance determined therefrom. Both length of core and rate of core entry into the inner barrel can then be determined. If the …
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
- Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.