PATENT CLAIM ANALYSIS

Application Number: 15871885
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["475", "230000"]

Abstract:
The present invention discloses a heavy-duty drive axle comprising a reduction gearbox and a drive motor; a differential case is provided within the reduction gearbox; a motor output shaft of the drive motor is linked with a first output shaft and a second output shaft via the differential case; the differential case consists of a differential holder, a connecting pole, a linkage gear and four bevel gears; each bevel gear is meshed with two bevel gears; the bevel gears comprise a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear, the first bevel gear and the second bevel gear are arranged oppositely, and the third bevel gear and the fourth bevel gear are arranged oppositely and sheathed on the connecting pole; the connecting pole is fixed with the differential holder; a cavity is formed within the differential holder; a through hole for fitting with the connecting pole is formed on each of an upper side and a lower side of the differential holder, and a third shaft hole and an opening are separately formed on a left side and a right side of the differential holder; the linkage gear is fixed at the opening of the differential holder; and the motor output shaft is linked with the linkage gear.

Claim (Index 3):
The heavy-duty drive axle according to  claim 2 , characterized in that a sleeve bearing is fixed within each of the annular protuberance and the annular boss; one sleeve bearing is used for fitting with the first output shaft and the other sleeve bearing is used for fitting with the second output shaft; an adjustment tank running through an interior sleeve bearing hole and an exterior sleeve bearing hole is formed on the sleeve bearing, and the adjustment tank runs through end faces of two ends of the sleeve bearing in the axial direction of the sleeve bearing; the sleeve bearing is of a bilayer structure, and the sleeve bearing comprises a powder metallurgical layer in an inner layer and a low-carbon steel sleeve in an outer layer; the powder metallurgical layer comprises a first segment composed of polytetrafluoroethylene and lead, and a second segment composed of tin-bronze powder, and the second segment is located between the first segment and the low-carbon steel sleeve; and an electroplating layer is formed on the low-carbon steel sleeve.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 3.54545
- Patent Class: 475.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15871751', '10867866', '13833803', '12540374', '14611462']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7139081714917748
- 35 USC 102 Novelty (BERT): 0.5007328382410842
- Combined Prediction Score: 0.6925906381667057
- Mean Citation Score: 232.279292
- Max Citation Score: 260.82858
- Similarity Product: 189.06834316154843

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test