PATENT CLAIM ANALYSIS

Application Number: 16180508
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-04
Patent Classification: ["148", "581000"]

Abstract:
A rail-manufacturing method according to the present invention performs forced cooling on at least a head of a hot rail hot-rolled at or heated to the austenite region temperature or higher. The forced cooling is performed for 10 seconds from start of the forced cooling so that the cooling rate at the head surface becomes 1° C./s or higher to 20° C./s or lower, the forced cooling is performed after a lapse of 10 seconds from the start of the forced cooling until heat generation during transformation begins in the head surface so that the cooling rate at the head surface becomes 1° C./s or higher to 5° C./s or lower, the forced cooling is performed during transformation from beginning to end of the heat generation during transformation so that the cooling rate at the head surface becomes lower than 1° C./s or the temperature-rising rate becomes 5° C./s or lower, and the forced cooling is performed after the end of the heat generation during transformation until the rail-head surface temperature becomes 450° C. or lower so that the cooling rate at the head surface becomes 1° C./s or higher to 20° C./s or lower.

Claim (Index 2):
A rail-manufacturing equipment that performs forced cooling on at least a head of a rail that is hot after hot-rolled at an austenite region temperature or higher or after heated to the austenite region temperature or higher, the rail-manufacturing equipment comprising:\n a first cooling device including a first head-cooling header configured to jet a cooling medium toward the head of the rail and a first head thermometer configured to measure surface temperature of the head of the rail; a second cooling device including a second head-cooling header configured to jet the cooling medium toward the head of the rail and a second head thermometer configured to measure surface temperature of the head of the rail; and a controller configured to adjust jet of the cooling medium from the first head-cooling header and the second head-cooling header, wherein the controller includes a temperature-monitoring unit configured to monitor measurement results by the first head thermometer and the second head thermometer during the forced cooling, and the controller further includes a cooling-rate controller configured to:\n adjust the jet of the cooling medium from the first head-cooling header for 10 seconds from start of the forced cooling so that a cooling rate at a surface of the head becomes 1\u00b0 C./s to 20\u00b0 C./s; \n determine beginning and end of heat generation during transformation based on a history of the measurement results by the first head thermometer monitored by the temperature-monitoring unit, and adjust the jet of the cooling medium from the first head-cooling header during a period from the beginning to the end of the heat generation during transformation so that the cooling rate at the surface of the head becomes lower than 1\u00b0 C./s or a temperature-rising rate becomes 5\u00b0 C./s or lower; \n adjust the jet of the cooling medium from the first head-cooling header during a period after the end of the heat generation during transformation until temperature inside the head of the rail becomes 550\u00b0 C. to 650\u00b0 C. so that the cooling rate at the surface of the head becomes 1\u00b0 C./s to 20\u00b0 C./s; \n instruct the rail to be conveyed to the second cooling device after the temperature inside the head of the rail becomes 550\u00b0 C. to 650\u00b0 C.; and \n adjust the jet of the cooling medium from the second cooling header during a period until temperature at the surface of the head of the rail becomes 450\u00b0 C. or lower toward the rail forcedly cooled in the first cooling device so that the cooling rate at the surface of the head of the rail becomes 2\u00b0 C./s to 20\u00b0 C./s.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 3.1746
- Patent Class: 148.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14770664', '15503361', '14407141', '13584145', '12794191']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7819183047016955
- 35 USC 102 Novelty (BERT): 0.5703681154674731
- Combined Prediction Score: 0.7607632857782733
- Mean Citation Score: 288.031834
- Max Citation Score: 450.68582
- Similarity Product: 349.6769226468109

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

Dataset: test