PATENT CLAIM ANALYSIS

Application Number: 15899647
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["361", "154000"]

Abstract:
An operation coil drive device includes a drive control unit to perform control to set, for a semiconductor switching element to switch on and off the source voltage applied to an operation coil of a magnetic contactor, a larger ON/OFF time ratio for a circuit-closing control and a smaller ON/OFF time ratio for a holding control, wherein the drive control unit includes: a circuit-closing-control inductance calculation unit to calculate an inductance of the operation coil immediately after a start of the circuit-closing control; a circuit-closing-control resistance value calculation unit to calculate a direct current resistance value of the operation coil based on the calculation result; and a circuit-closing-control switching correction unit to correct the ON/OFF time ratio of the semiconductor switching element for the circuit-closing control based on the calculation result.

Claim (Index 2):
The operation coil drive device for a magnetic contactor according to  claim 1 , wherein at least one of the circuit-closing-control inductance calculation unit and the circuit-closing-control resistance value calculation unit performs a calculation according to an approximation formula obtained by applying Fourier series expansion to an exponential function based on natural logarithm in a relational expression among the current passing through the operation coil, the voltage across the operation coil and the direct current resistance value of the operation coil, and the inductance during the circuit-closing control.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.50909
- Patent Class: 361.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15412002', '10575464', '14368197', '13978088', '15033368']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8229185592934533
- 35 USC 102 Novelty (BERT): 0.4940282168053417
- Combined Prediction Score: 0.7900295250446421
- Mean Citation Score: 196.418042
- Max Citation Score: 202.68536
- Similarity Product: 140.2346330035162

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