PATENT CLAIM ANALYSIS

Application Number: 15924562
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["310", "125000"]

Abstract:
A hybrid induction motor includes a fixed stator, an independently rotating outer rotor, and an inner rotor fixed to a motor shaft. The outer rotor is designed to have a low moment of inertia and includes angularly spaced apart first bars and permanent magnets on an inner surface of the outer rotor. The inner rotor includes angularly spaced apart second bars and interior flux barriers aligned with the second bars. The outer rotor is initially accelerated by cooperation of a rotating stator magnetic field with the first bars. As the outer rotor accelerates towards synchronous RPM, a rotating magnetic field of the permanent magnets cooperate with the second bars of the inner rotor to accelerate the inner rotor. At near synchronous speed the rotating stator magnetic field reaches through the outer rotor and into the inner rotor coupling the two rotors for efficient permanent magnet operation.

Claim (Index 1):
A method for transitioning from induction operation at startup to synchronous operation of a hybrid squirrel cage/permanent magnet motor comprising:\n providing an Alternating Current (AC) signal to a fixed stator; creating a rotating stator magnetic field inductively cooperating with a hybrid squirrel cage and permanent magnet outer rotor to create torque on the hybrid squirrel cage and permanent magnet outer rotor, the hybrid squirrel cage and permanent magnet outer rotor comprising:\n the hybrid squirrel cage and permanent magnet outer rotor residing coaxial with a motor shaft and having a first rotor core, angularly spaced apart permanent magnets embedded in the first rotor core, and first squirrel cage bars embedded in the first rotor core, the hybrid squirrel cage and permanent magnet outer rotor not rotationally mechanically coupled to the motor shaft at any time other than parasitic mechanical rotational coupling through bearings coupling the hybrid squirrel cage and permanent magnet outer rotor to the motor shaft, and the hybrid squirrel cage and permanent magnet outer rotor capable of rotating independently of the motor shaft, and solely mechanically coupled to all other motor elements through the bearings; \n beginning rotation of the hybrid squirrel cage and permanent magnet outer rotor; after the hybrid squirrel cage and permanent magnet outer rotor begins to rotate, the permanent magnets of the hybrid squirrel cage and permanent magnet outer rotor creating a second rotating magnetic field cooperating with a squirrel cage inner rotor, the squirrel cage inner rotor comprising:\n the squirrel cage inner rotor residing coaxial with the motor shaft and having a second rotor core, second squirrel bars embedded in the second rotor core, and the squirrel cage inner rotor rotationally fixed to the motor shaft; \n accelerating the hybrid squirrel cage and permanent magnet outer rotor towards synchronous engine speed; near synchronous engine speed, the hybrid squirrel cage and permanent magnet outer rotor and stator combining to form a joint rotating magnetic field; the joint rotating magnetic field inductively cooperating with the second squirrel cage bars of the squirrel cage inner rotor; the squirrel cage inner rotor approaching synchronous engine speed; and the hybrid squirrel cage and permanent magnet outer rotor and the squirrel cage inner rotor magnetically coupling at synchronous engine speed.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 90.0
- Lexical Diversity: 2.24638
- Patent Class: 310.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13689400', '13452514', '12905906', '12610184', '12851017']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.901847159106996
- 35 USC 102 Novelty (BERT): 0.562912961509746
- Combined Prediction Score: 0.8679537393472709
- Mean Citation Score: 420.91608
- Max Citation Score: 473.43524
- Similarity Product: 409.67048311455727

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

Dataset: test