PATENT CLAIM ANALYSIS

Application Number: 15954746
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["290", "052000"]

Abstract:
There is disclosed an auxiliary rotation device  28  for a gas turbine engine  10 . The auxiliary rotation device  28  comprises: an electric machine  30  configured to be coupled to a rotor of the gas turbine engine  10 ; and a dedicated electrical storage device  32  coupled to the electric machine  30 . During a period of powered operation of the gas turbine engine  10  the electric machine  30  is configured to act as a generator so as to charge the dedicated electrical storage device  32 . Following the period of powered operation of the gas turbine engine  10  the electric machine  30  is configured to act as a motor by discharging the dedicated electrical storage device  32  so as to cause the rotor to rotate for a period of time to provide even cooling of the rotor around its circumference. There is also disclosed a method of cooling a rotor of a gas turbine engine  10  using an auxiliary rotation device  28.

Claim (Index 11):
A method of cooling a rotor of a gas turbine engine using an auxiliary rotation device, the method comprising:\n during a period of powered operation of the gas turbine engine, charging a dedicated electrical storage device of the auxiliary rotation device via an electric machine of the auxiliary rotation device acting as a generator coupled to the rotor of the gas turbine engine; following the period of powered operation of the gas turbine engine, discharging the dedicated electrical storage device such that the electric machine acts as a motor so as to cause the rotor to rotate for a period of time to provide even cooling of the rotor around its circumference, wherein the electric machine ceases to rotate the rotor when the dedicated electrical storage device is discharged such that insufficient charge remains to rotate the rotor; such that the period of time over which the rotor rotates is determined by the capacity of the dedicated electrical storage device.

Metadata:
- Claim Count in Document: 30.0
- Percentile: 91.0
- Lexical Diversity: 2.81356
- Patent Class: 290.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15027264', '12594826', '12109929', '15151297', '12518350']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6076241409278089
- 35 USC 102 Novelty (BERT): 0.4828841699095903
- Combined Prediction Score: 0.5951501438259872
- Mean Citation Score: 210.71128600000003
- Max Citation Score: 213.54738
- Similarity Product: 161.86116589695098

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