Sensitive deep-well-drilling hook load measuring system
CA 1054168 A · Owner: Texaco Development Corporation · Inventors: Rundell, Herbert A.; Hall, Russell W. (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hook load measuring system for improving the sensitivity of such measurements in deep-well-drilling operations. It employs a transducer actuated by the hook load and an output signal from the transducer that covers the full range of hook-load variation. There is an arrangements for ing the signal at any given setting and then for measuring change in a predetermined direction with greatly increased sensitivity. -I-
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 May 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 1996.
- 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.