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US 2011/0085877 A1Published application
Downhole tool
AssigneeAtlas Copco Secoroc LLC
InventorAndrew J. Osborne, JR.
Life of this patent
Estimating the term…
Abstract
A downhole tool includes a cutter rotatably mounted to a journal. The journal is fastened to a downhole tool frame with a fastener. The fastener is engaged by an insert and retainer so it is restricted from rotating. The insert extends over a head of the fastener, and the retainer extends over the insert.
Claims22
A downhole tool, comprising:
- a journal fastened to a downhole tool frame with a fastener;
- an insert engaged with the fastener;
- and
- a retainer engaged with the downhole tool frame and insert.
1 more element
A locking fastener assembly, comprising:
- a retainer with a first retainer opening extending therethrough;
- a first insert with a first central hexagonal opening;
- and
- a first fastener which includes a first hexagonal fastener head sized and shaped to be received by the first central hexagonal opening.
1 more element
A method, comprising:
- fastening a journal to a downhole tool frame with a fastener;
- engaging an insert with the fastener;
- and
- engaging a retainer with the downhole tool frame and insert.
1 more element
Dependencies are inferred from the claim text.