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US 10,519,721 B2Granted
Nested bearing and seal for roller cone drill bit
AssigneeHalliburton Energy Services, Inc.
InventorMark E. Williams
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to nested bearings and seals for use in roller cone drill bits. The bearing may include a bearing member, such as a flange or bushing, that is nested with a seal boss.
Claims20
A drill bit bearing assembly comprising:
- a spindle;
- a cone assembly rotatably mounted on the spindle;
- a seal located between the spindle and cone assembly, the seal comprising a seal boss associated with the spindle;
- and
- a bearing formed from at least a portion of the spindle and at least a portion of the cone assembly, the bearing comprising:
- a first bearing surface defined by the spindle;
- a second bearing surface defined by the cone assembly;
- a bearing member nested with the seal boss and co-extensive with the first bearing surface or the second bearing surface and extending into a gap formed between the first bearing surface and the seal boss.
5 more elements
A drill bit comprising:
- at least one arm comprising:
- a spindle;
- a cone assembly rotatably mounted on the spindle;
- a seal located between the spindle and cone assembly, the seal comprising a seal boss associated with the spindle;
- and
- a bearing formed from at least a portion of the spindle and at least a portion of the cone assembly, the bearing comprising:
- a first bearing surface defined by the spindle;
- a second bearing surface defined by the cone assembly;
- a bearing member nested with the seal boss and co-extensive with the first bearing surface or the second bearing surface and extending into a gap formed between the first bearing surface and the seal boss.
6 more elements
Dependencies are inferred from the claim text.