PATENT CLAIM ANALYSIS

Application Number: 15777786
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["251", "333000"]

Abstract:
A sealing element for a ball valve with a first sealing ring and a second sealing ring whose central axes are parallel, the first sealing ring and the second sealing ring being made of different materials, and the first sealing ring being located on a side of the second sealing ring facing towards a ball in a ball valve in an axial direction, and being used to make contact with a spherical surface of the ball to form a seat The first and second sealing rings are fixed together, and the first sealing ring is a stamped annular polytetrafluoroethylene (PTFE) sheet. Since PTFE has a very low friction coefficient, the friction torque between the first sealing ring and the spherical surface of the ball is relatively small, and the first sealing ring does not wear easily and is not prone to sealing failure. A ball valve using the sealing element is also disclosed.

Claim (Index 7):
The sealing element as claimed in  claim 2 , wherein the direction pointing from one axial end of the flared opening to the other axial end is defined as an extending direction, and the first sealing ring comprises a first unit ring and a second unit ring arranged spaced apart from each other in the extending direction; and\n an annular concave cavity surrounding the central axis is arranged on a side of the second sealing ring facing towards the ball in the axial direction, the annular concave cavity in the extending direction is located between the first unit ring and the second unit ring, and the first unit ring and the second unit ring are both adapted to make contact with the spherical surface, such that the annular concave cavity is adapted to enclose an annular sealing cavity with the spherical surface.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 93.0
- Lexical Diversity: 2.24658
- Patent Class: 251.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12809903', '13172078', '12269127', '11047183', '10565437']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7551124824639455
- 35 USC 102 Novelty (BERT): 0.4625788925753253
- Combined Prediction Score: 0.7258591234750834
- Mean Citation Score: 193.434872
- Max Citation Score: 202.01569
- Similarity Product: 152.68149757947506

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