PATENT CLAIM ANALYSIS

Application Number: 16015987
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["277", "443000"]

Abstract:
A multi-piece oil ring includes an oil ring main member in which two rails are connected together by a columnar part and which has a roughly I-shaped cross section; and a coil expander disposed in an inner circumferential groove formed on the inner circumferential surface of the columnar. Each rail in the oil ring main member possesses a sliding section protuberance whose tip possesses a jutting portion. The axial length of the jutting portion is 0.02-0.18 mm. The change rate of the axial length of the individual jutting portion is in the range of 0 to 80% at least in a region of from its sliding surface to be faced to a cylinder, which is positioned at the tip of the jutting portion, to a position of 0.03 mm away from the aforementioned sliding surface in the radial direction of the oil ring main member.

Claim (Index 9):
A multi-piece oil ring comprising:\n an oil ring main member in which two rails arranged in an axial direction are connected together by a columnar part and which has a roughly I-shaped axial cross section; and a coil expander which is placed in an inner circumferential groove formed on an inner circumferential surface of the columnar part of the oil ring main member, and which applies force to the oil ring main member in such a way as to press the same outwardly in a radial direction of the oil ring main member, wherein each of the two rails in the oil ring main member comprises an individual protuberance extending from a top surface of the rail outwardly in the radial direction, the protuberance having a first portion and a second portion respectively,\n the first portion being formed at a tip of the protuberance as a jutting portion with a sliding surface configured to engage with an associated piston cylinder, a first surface having a taper shape, a second surface having a taper shape, and a third surface which is parallel to the sliding surface and is formed at between the second portion and the second surface, \n the second portion being formed at between the first portion and the top surface of the rail, and having a taper shape that tapers off to the sliding surface, the second portion having a first side and a second side opposite from the first side arranged along the axial direction, \n the first side being formed by continuously linearly connecting to the first surface and by tapering off from the top surface of the rail to the sliding surface with the first surface, and \n the second side being formed by connecting to the second surface via the third surface and by continuously linearly tapering off from the top surface of the rail to the third surface; \n wherein the second surface is formed at either an outer side of the sliding surface or at an inner side of the sliding surface in the axial direction of the protuberance facing towards or away from the other protuberance, the second surface having a taper shape that continuously tapers off from second side to the sliding surface and a concave curved shape in axial cross section, the concave curved shape being concave in the direction towards the first side of the individual protuberance, the concave curved shape connecting to the second side.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 94.0
- Lexical Diversity: 1.98701
- Patent Class: 277.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13497417', '13697957', '15551673', '10527637', '15552299']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.772645323892684
- 35 USC 102 Novelty (BERT): 0.5554625416514265
- Combined Prediction Score: 0.7509270456685584
- Mean Citation Score: 231.567134
- Max Citation Score: 419.0033
- Similarity Product: 401.8548548168361

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