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US 8,939,221 B2Granted
High pressure lock assembly
AssigneeBaker Hughes Incorporated
InventorDouglas J. Murray
Life of this patent
Estimating the term…
Abstract
A lock assembly including a mandrel having one or more windows arranged alternatingly with one or more struts. One or more dogs are included corresponding to the one or more windows and are radially extendable therethrough. A member is operatively arranged for radially extending each of the one or more dogs. Each of the one or more dogs is operatively coupled between the member and the mandrel when fully radially extended by the member for bypassing loading in the one or more struts during loading of the assembly.
Claims11
A lock assembly comprising:
- a mandrel having one or more windows arranged alternatingly with one or more struts;
- one or more dogs corresponding to the one or more windows and radially extendable therethrough;
- and
- a member operatively arranged for radially extending each of the one or more dogs, the member comprising one or more steps arranged to engage a projection on the one or more dogs when fully radially extended, each of the one or more dogs axially locked between the one or more steps and an edge of one of the one or more windows when fully radially extended for bypassing loading in the one or more struts during loading of the assembly, wherein rotational movement of the member with respect to the mandrel radially extends the one or more dogs.
1 more element
A method of locking an assembly comprising:
- causing relative rotational movement between an extender member and a mandrel, the mandrel including one or more windows arranged alternatingly with one or more struts;
- extending one or more dogs with the extender member through the one or more windows due to the relative rotational movement;
- landing the one or more dogs at a landing feature, the member comprising one or more steps arranged to engage a projection on the one or more dogs when landed at the landing feature;
- and
- bypassing loading the one or more struts during loading of the assembly due to the one or more dogs being axially locked between the one or more steps and an edge of one of the one or more windows.
2 more elements
Dependencies are inferred from the claim text.