PATENT CLAIM ANALYSIS

Application Number: 15881240
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["060", "226100"]

Abstract:
A gas turbine engine includes a gear system that provides a speed reduction between a fan drive turbine and a fan rotor. Aspects of the gear system are provided with some flexibility. The fan drive turbine has a first exit area and rotates at a first speed. A second turbine section has a second exit area and rotates at a second speed, which is faster than said first speed. A performance quantity can be defined for both turbine sections as the products of the respective areas and respective speeds squared. A performance quantity ratio of the performance quantity for the fan drive turbine to the performance quantity for the second turbine section is relatively high.

Claim (Index 18):
A gas turbine engine comprising:\n a shaft driving a fan having fan blades; an epicyclic gear system which drives said shaft; said epicyclic gear system having a gear mesh lateral stiffness and a gear mesh transverse stiffness, and including a ring gear having a ring gear lateral stiffness and a ring gear transverse stiffness, at least one of said ring gear lateral stiffness and said ring gear transverse stiffness being less than 12% of a respective one of said gear mesh lateral stiffness and said gear mesh transverse stiffness; a high pressure turbine section; a low pressure turbine section, said low pressure turbine in driving engagement with at least one of a plurality of gears in said epicyclic gear system;\n wherein said low pressure turbine section has a first exit area at a first exit point and rotates at a first speed, \n wherein said high pressure turbine section has a second exit area at a second exit point and rotates at a second speed, which is faster than said first speed, \n wherein a first performance quantity is defined as the product of said first speed squared and said first area, \n wherein a second performance quantity is defined as the product of said second speed squared and said second area, \n wherein a performance quantity ratio of said first performance quantity to said second performance quantity is between 0.5 and 1.5; and \n a bypass ratio greater than 10;

Metadata:
- Claim Count in Document: 80.0
- Percentile: 86.0
- Lexical Diversity: 2.0678
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15484441', '13908177', '13974136', '14260557', '14859381']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.79710501080001
- 35 USC 102 Novelty (BERT): 0.5956181795278698
- Combined Prediction Score: 0.776956327672796
- Mean Citation Score: 468.870238
- Max Citation Score: 491.59018
- Similarity Product: 402.86127272107

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