PATENT CLAIM ANALYSIS

Application Number: 15870458
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-04
Patent Classification: ["310", "054000"]

Abstract:
An electric machine having a rotor, stator and housing. The rotor includes a radially mounted array of permanent magnets and the stator includes a plurality of electromagnets radially positioned around the rotor. The machine includes a fluid circuit consisting of first and second cavities enclosed by the stator and positioned between the rotor and housing. The fluid circuit also includes an air gap between the stator and rotor and a plurality of ventilation channels extending through the rotor. The air gap and ventilation channels are in fluid communication with the first and second cavities. The rotor also includes an internal fan extending into the first or second cavity. When the rotor is caused to rotate with respect to the stator, the fan causes air or another fluid to circulate through the fluid circuit to cool the rotor.

Claim (Index 1):
An electric machine comprising:\n a rotor comprising;\n a shaft defining a length-wise shaft axis; \n a rotor back assembly surrounding a portion of the shaft; and \n a plurality of permanent magnets radially positioned around the rotor back assembly; \n a stator comprising a plurality of electromagnets radially positioned around the rotor; an enclosed housing supporting the rotor and the stator, wherein portions of the rotor, the stator and the housing define;\n a first cavity between the rotor and the housing at one end of the rotor; \n a second cavity between the housing and an opposite end of the rotor; \n an air gap extending from the first cavity to the second cavity between the rotor and the stator; and \n a ventilation channel through the rotor back assembly extending from the first cavity to the second cavity; \n a stator encapsulant preventing fluid flow through the stator and between the stator and the housing; and a rotor fan extending into one of the first cavity and the second cavity, causing a fluid to continuously circulate within the housing when the rotor rotates with respect to the stator, said fluid circulating from the first cavity through one of the air gap or the ventilation channel to the second cavity, and then through the other of the air gap or the ventilation channel back to the first cavity, without the fluid exiting the housing, without drawing additional fluid from outside of the housing, and without circulating the fluid through the stator or between the stator and the housing.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.43333
- Patent Class: 310.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15870420', '15870472', '10889980', '11295888', '11436444']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.883459794112223
- 35 USC 102 Novelty (BERT): 0.5444678756326629
- Combined Prediction Score: 0.849560602264267
- Mean Citation Score: 326.430126
- Max Citation Score: 428.2094
- Similarity Product: 349.6873176112413

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

Dataset: test