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US 12,240,070 B2Granted
Gearbox case with wear sleeve
AssigneeMid-States Oilfield Machine LLC
InventorJohn Floyd Bossa
Life of this patent
Estimating the term…
Abstract
A gearbox may include a gearbox case with a wear sleeve disposed within a shaft bore, and a gear assembly mounted on a shaft and disposed within the shaft bore. The gear assembly may include a bearing that engages the wear sleeve. A method of repairing a gearbox case may include uncoupling a top piece and a bottom piece of the gearbox case, forming an oversize bore in a shaft bore of the gearbox case to remove a damaged area, and installing a wear sleeve in the oversize bore.
Claims20
A gearbox comprising:
- a shaft bore extending through a gearbox case;
- at least one bearing disposed within the shaft bore to support a shaft;
- and
- at least two wear sleeves positioned to protect the gearbox case from being damaged by the at least one bearing;
- wherein the at least two wear sleeves form part of the shaft bore;
- and
- wherein the shaft bore has a substantially uniform diameter across its length.
4 more elements
A gearbox comprising:
- a multi-diameter bore extending through a gearbox case;
- at least one bearing disposed within the multi-diameter bore to support a shaft;
- and
- multiple wear sleeves positioned to protect the gearbox case from being damaged by the at least one bearing;
- wherein the multiple wear sleeves are sized and positioned within the multi-diameter bore to form a shaft bore that has a substantially uniform diameter across its length.
2 more elements
Dependencies are inferred from the claim text.