PATENT CLAIM ANALYSIS

Application Number: 15920574
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["318", "400200"]

Abstract:
Air blower equipped with brushless DC motor includes an inverter circuit, a drive logic controller, a duty indicator, a motor voltage detector, a motor current detector, and a correlation detector. A duty indicating value of the duty indicator is determined according to a value of the correlation detector.

Claim (Index 1):
An air blower equipped with a brushless DC motor comprising:\n an inverter circuit including a plurality of upper stage side switching elements and a plurality of lower stage side switching elements connected to form a bridge; a drive logic controller configured to perform PWM control of the upper stage side switching elements or the lower stage side switching elements, and control a DC voltage applied to the inverter circuit by energizing driving coils of the brushless DC motor sequentially in a specified direction and order; a duty indicator configured to indicate ON/OFF duty of the PWM control; a motor voltage detector configured to detect a voltage applied to the driving coils, and output a normalized motor voltage value, the normalized motor voltage value being obtained by normalizing treatment of the detected voltage; a motor current detector configured to detect a current flowing through the driving coils, and output a normalized motor current value, the normalized motor current value being obtained by normalizing treatment of the detected current; a correlation detector configured to compare the normalized motor voltage value with the normalized motor current value, generate a control signal based on the comparison, and output the control signal to the duty indicator, the control signal changing the ON/OFF duty of the PWM control; wherein the correlation detector is configured to decrease the ON/OFF duty of the control signal when the normalized motor current value is larger than the normalized motor voltage value according to the comparison, and increase the ON/OFF duty of the control signal when the normalized motor voltage value is larger than the normalized motor current value, to maintain the normalized motor current value and the normalized motor voltage value to be equal to each other, when a graph is illustrated with the normalized motor voltage value on a horizontal axis and the normalized motor current value on a vertical axis.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 1.66667
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11997452', '11997431', '12295956', '10568123', '13128347']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6960116508500476
- 35 USC 102 Novelty (BERT): 0.4953410875399224
- Combined Prediction Score: 0.6759445945190351
- Mean Citation Score: 272.41027599999995
- Max Citation Score: 282.95526
- Similarity Product: 246.33308704041485

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

Dataset: test