Electrical kelly cock assembly
CA 1054139 A · Owner: General Electric Company · Inventors: Cullen, Roy H.; Young, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A kelly cock valve assembly for use in well drilling operations is adapted for connection within a tubular drill string above or below the kelly joint for controlling the flow of fluids through the drill string. An electrical conductor is provided for detachable interconnection with one or more electrical cables in the drill string for uninterrupted conduction of electrical energy between a surface location and a subsurface location without interfering with fluid flow control by the valve device of the assembly.
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.