PATENT CLAIM ANALYSIS

Application Number: 15755724
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-11
Patent Classification: ["218", "046000"]

Abstract:
The present invention provides an arc extinguishing structure for direct current circuit breaker, which comprises an arc extinguishing chamber ( 3 ) installed on a second casing ( 2 ), with a lateral opening ( 30 ) which opens towards the first casing ( 1 ); a gas generating hood ( 4 ) installed at a lower part inside the arc extinguishing chamber ( 3 ) and comprising two gas generating plates ( 41, 42 ) that are disposed opposite to each other, with a shield plate ( 43 ) disposed opposite to the lateral opening ( 30 ) and adjacent the second casing ( 2 ); a movable contactor ( 5 ) and a stationary contactor ( 6 ) installed inside an internal installation space ( 10 ), with the disconnecting portion between the movable contactor ( 5 ) and the stationary contactor ( 6 ) being located inside an accommodation space ( 40 ) and close to the shield plate ( 43 ), so that when the movable contactor ( 5 ) becomes disconnected from the stationary contactor ( 6 ) and an electric arc is produced, the electric arc triggers the gas generating plates ( 41, 42 ) and the shield plate ( 43 ) to generate a lot of gas which pushes the electric arc to move in a direction away from the shield plate ( 43 ); a plurality of arc extinguishing grid-plates ( 7 ) installed at an upper part inside the arc extinguishing chamber ( 3 ), having lower slots ( 71 ) which are open towards the accommodation space ( 40 ) and have a size that gradually decreases along a direction from the second casing ( 2 ) to the first casing ( 1 ), so that the electric arc during its moving process is continuously blocked by the arc extinguishing grid-plates ( 7 ) with increasingly smaller sizes of lower slots ( 71 ), and as a result, the electric arc cannot come out from the lateral opening ( 30 ) of the arc extinguishing chamber ( 3 ), but instead can only enter the spaces between the arc extinguishing grid-plates ( 7 ) and thus get extinguished as quickly as possible.

Claim (Index 9):
The arc extinguishing structure for direct current circuit breaker according to  claim 8 , characterized in that, a sealing space ( 80 ) is formed by the labyrinth arc extinguishing structure ( 8 ), the first casing ( 1 ) and the second casing ( 2 ), said other open end of the labyrinth path ( 85 ) is communicated with the sealing space ( 80 ), and an air venting hole ( 14 ) communicated with the sealing space ( 80 ) is provided in the first casing ( 1 ) and/or the second casing ( 2 ).

Metadata:
- Claim Count in Document: 12.0
- Percentile: 88.0
- Lexical Diversity: 2.88889
- Patent Class: 218.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13115895', '14251408', '15110080', '11712899', '11252604']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6530137345731242
- 35 USC 102 Novelty (BERT): 0.5272045317819206
- Combined Prediction Score: 0.6404328142940039
- Mean Citation Score: 261.640056
- Max Citation Score: 318.36768
- Similarity Product: 234.71054721479416

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