PATENT CLAIM ANALYSIS

Application Number: 15893853
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["251", "330000"]

Abstract:
A valve stem seal hermetically seals a space formed between a valve stem of a valve which establishes and interrupts communication between a cylinder and a port and a valve guide into which the valve stem is inserted in a reciprocally movable manner, wherein the valve stem seal includes: a reinforcing ring formed into an annular shape centered about an axis, and extending in a radial direction of a ring of the reinforcing ring; and an elastic body portion formed into an annular shape centered about the axis, attached to the reinforcing ring, and including a seal lip which abuts on the valve stem.

Claim (Index 3):
A hermetic sealing structure for hermetically sealing a space formed between a valve stem of a valve and a valve guide, the valve establishing and interrupting communication between a cylinder and a port, the valve guide having one end facing a cam side and another end facing a cylinder side, and the valve stem being inserted into the valve guide in a reciprocally movable manner, comprising:\n a cylinder head; a valve guide arranged on the cylinder head; the valve stem inserted into the valve guide in a reciprocally movable manner; a valve spring mounted on the cylinder head, and biasing the valve stem in a direction where communication between the cylinder and the port is interrupted; and a valve stem seal provided on the valve guide on a side of the one end, wherein the valve stem seal includes: a reinforcing ring formed into an annular shape centered about an axis, and extending in a radial direction of a ring of the reinforcing ring; and an elastic body portion formed into an annular shape centered about the axis, attached to the reinforcing ring, and including a seal lip which abuts on the valve stem, and the reinforcing ring is disposed between an inner wall of the cylinder head and the valve spring, and is fixed to the cylinder head by pressure from the valve spring.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 88.0
- Lexical Diversity: 2.09434
- Patent Class: 251.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15113066', '13179648', '10612454', '13628271', '14117808']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7563771909282889
- 35 USC 102 Novelty (BERT): 0.4707826663401622
- Combined Prediction Score: 0.7278177384694763
- Mean Citation Score: 227.33785
- Max Citation Score: 248.5882
- Similarity Product: 196.5882838871717

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