Self-energizing locking mechanism
CA 1196275 A · Owner: Hughes Tool Company · Inventors: Clark, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A locking mechanism for securing an inner member of a well assembly to the bore of a support or outer member has features that prevent any movement of the inner member due to a force acting along the axis of the bore. The locking mechanism includes a plurality of wicker grooves formed in a sidewall of the bore transverse to the axis of the bore. Reacting grooves are formed on an cuter wall of the inner member perpendicular to the axis of the bore. Slips are spaced around the outer wall of the inner member between the inner member and the sidewall of the bore. The slips each have wicker grooves on the exterior and reacting grooves on the interior. The locking mechanism includes an expansion …
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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 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2002.
- 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.