PATENT CLAIM ANALYSIS

Application Number: 15769048
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-02
Patent Classification: ["137", "596170"]

Abstract:
A trip system for a steam turbine closes a trip-and-throttle valve and a control valve of a steam turbine in an emergency. The trip system includes: an emergency shut-off device that shuts off supply of control oil for the trip-and-throttle valve and the control valve to close the trip-and-throttle valve and the control valve; and a drain device that includes a plurality of solenoid valves connected in parallel and drains the control oil by opening the solenoid valves. The emergency shut-off device includes a cylinder, a piston that slides in the cylinder, a spring that applies biasing force to the piston, a plurality of piston valves provided to the piston, and a plurality of chambers formed by the piston valves.

Claim (Index 5):
The trip system for a steam turbine according to  claim 1 , further comprising:\n a stroke-testing port that communicates with the transfer chamber in the normal operation; and a stroke testing apparatus including:\n a first two-way valve having one end connected to the supply-drainage port and the other end connected to the second piping; and \n a second two-way valve having one end connected to the stroke-testing port and the other end being a drain side, \n wherein the stroke testing apparatus causes a stroke test of the piston by causing the first two-way valve to be closed and the second two-way valve to be opened to drain the control oil from the transfer chamber in the normal operation.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 91.0
- Lexical Diversity: 2.52941
- Patent Class: 137.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15843814', '15528954', '11448895', '15506042', '15272871']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8110684838623804
- 35 USC 102 Novelty (BERT): 0.4746719931600835
- Combined Prediction Score: 0.7774288347921507
- Mean Citation Score: 216.748636
- Max Citation Score: 226.25902
- Similarity Product: 181.9460527491426

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

Dataset: test