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US 11,261,954 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.
Claims19
An apparatus comprising:
- a gearbox case with a shaft bore extending therethrough;
- a first wear sleeve disposed within and coupled to the gearbox case at a first end of the shaft bore;
- and
- a second wear sleeve disposed within and coupled to the gearbox case at a second end of the shaft bore;
- wherein an inner diameter of the first wear sleeve and an inner diameter of the second wear sleeve form part of the shaft bore;
- and
- wherein the shaft bore has a substantially uniform diameter across its length.
4 more elements
An apparatus comprising:
- a gearbox case with a multi-diameter bore extending therethrough from a first side to a second side of the gearbox case, the multi-diameter bore comprising:
- a first section having a first diameter and having a first length that extends from the first side of the gearbox case into the gearbox case;
- a second section adjacent to the first section, the second section having a second diameter and a second length that extends from the first section further into the gearbox case;
- and
- a third section adjacent to the second section, the third section having a third diameter and a third length that extends from the second section to the second side of the gearbox case;
- a first wear sleeve disposed within and coupled to the gearbox case within the first section of the multi-diameter bore, the first wear sleeve having a length substantially equal to the first length, and an inner diameter substantially equal to the second diameter;
- and
- a second wear sleeve disposed within and coupled to the gearbox case within the third section of the bore, the second wear sleeve having a length substantially equal to the third length, and an inner diameter substantially equal to the second diameter.
5 more elements
Dependencies are inferred from the claim text.