PATENT CLAIM ANALYSIS

Application Number: 16003056
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["702", "058000"]

Abstract:
An electronic overload relay leverages a ratio metric current design to permit size and cost optimized circuit components that can be used to sense current for purposes of protecting motors by detecting overcurrent conditions in branch motor applications in lieu of thermal overload devices. A current divider is used to significantly reduce the current that must be sensed by a magnetically coupled toroid to permit its components to be size and cost optimized and to be implemented easily on a printed circuit board. The DC resistance can be used to provide a coarse design that can be calibrated pre-manufacture to establish the accuracy required in sensing motor load current by adjusting the value of the burden resistor. Precision printed circuit board traces can be used to ensure repeatability during manufacturing. A sweepable trigger value generator can permit operation over the entire range of FLC and the threshold can be calibrated into the device.

Claim (Index 1):
A ratio metric (RM) electronic overload relay for providing motor overcurrent protection for a motor in a motor branch circuit, the RM electronic overload relay comprising:\n one or more ratio metric (RM) current sensor assemblies, each configured to be coupled in series with one of one or more branches of the motor branch circuit to sense motor load current flowing therethrough, each of the one or more RM sensor assemblies including:\n a current divider including:\n a low impedance conductor configured to be conductively coupled in series with the branch; and \n a higher impedance conductor coupled to two points along the low impedance conductor, \n wherein the low impedance conductor forms a main path of the current divider between the two points and the higher impedance conductor forms a secondary path of the current divider; and \n \n a current sensor magnetically coupled to the secondary path, the current sensor including:\n a core through which the higher impedance conductor is fed as a primary; \n a secondary of one or more windings about the core; and \n a burden resistor that is coupled to the secondary, \n wherein the RM current sensor assembly is configured to produce a sensed load current output, across the burden resistor, over a predetermined range of magnitude that is proportionally related to the sensed motor load current over a predetermined range of full load current (FLC); and \n \n a settable trip current generator that establishes a trip current threshold value that can range in value up to a predetermined reference voltage, the trip current value being proportionally related to a load current value that if exceeded, will indicate an overcurrent condition that is a predetermined percentage above the FLC specified for the motor; and a comparator configured to receive the settable trip current value from the trip signal generator and to receive the sensed current output of at least one of the one or more RM current sensor assemblies, the comparator configured to compare the settable trip current value with the sensed current output of the at least one of the RM current sensor assemblies to produce an active state on an overload output when the received sensed current output is of a magnitude equal to or greater than the settable trip current value.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 1.75556
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15848552', '13667929', '14526863', '14553131', '10861564']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2025883735871973
- 35 USC 102 Novelty (BERT): 0.4868347901485332
- Combined Prediction Score: 0.2310130152433309
- Mean Citation Score: 205.467778
- Max Citation Score: 215.00696
- Similarity Product: 153.43446014189718

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