Platform leg plug
CA 1112061 A · Owner: Halliburton Company · Inventors: Knox, Lloyd C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A removable plug is provided for temporarily sealing the interior of an annular member to prevent the flow of fluid therethrough. The removable plug including a plug body means disposed within the annular member and comprising packer mandrel means and packer member means located on the packer mandrel means for sealingly engaging the interior of the annular member. Packer setting sleeve means are located on the packer mandrel means for compressing the packer member means. Locking dog means are pivotally mounted on the plug body means for retaining the plug from axial movement in at least one direction in the annular member. Pressure equalization means are provided for allowing the flow of …
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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
- 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.