PATENT CLAIM ANALYSIS

Application Number: 15944381
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["318", "817000"]

Abstract:
A drive circuit for an electric motor includes a first filter, a rectifier, an inverter, and a line contactor. The first filter is configured to be coupled to an AC source and produces a filtered line frequency AC signal. The rectifier is coupled to the filter and produces a DC signal from the filtered line frequency AC signal. The inverter is coupled to the rectifier and produces an AC signal on an output node of the inverter. The AC signal is supplied to the electric motor to energize its stator windings. The line contactor is coupled between an output node of the first filter and the output node of the inverter. The line contactor supplies the output node of the inverter directly with the filtered line frequency AC signal to energize the stator windings when the inverter is disabled.

Claim (Index 23):
A permanent split capacitor (PSC) motor, comprising:\n a plurality of stator windings, including a start winding and a main winding; and a drive circuit coupled to said plurality of stator windings, said drive circuit comprising: a first filter configured to be coupled to an alternating current (AC) source, said first filter configured to produce a filtered line frequency AC signal; a rectifier coupled to said first filter and configured to produce a direct current (DC) signal from the filtered line frequency AC signal; an inverter coupled to said rectifier and configured to produce an AC signal on an output node of said inverter, the AC signal configured to be supplied to said plurality of stator windings; and a line synchronization circuit coupled between an output node of said first filter and the output node of said inverter, said line synchronization circuit comprising a semiconductor switch and a second filter, said semiconductor switch configured to couple the output node of said first filter and the output node of said inverter to supply the output node of said inverter directly with the filtered line frequency AC signal to energize said plurality of stator windings when said inverter is disabled.

Metadata:
- Claim Count in Document: 42.0
- Percentile: 91.0
- Lexical Diversity: 3.10417
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15366191', '15335287', '15335251', '14854766', '15826414']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6836593273496312
- 35 USC 102 Novelty (BERT): 0.5019561059827894
- Combined Prediction Score: 0.6654890052129471
- Mean Citation Score: 255.535016
- Max Citation Score: 299.8751
- Similarity Product: 264.60776136280293

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