PATENT CLAIM ANALYSIS

Application Number: 16064992
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["384", "286000"]

Abstract:
An oil-retaining sintered bearing in which friction coefficient can be reduced and a sliding property as a bearing can be improved by supplying a sufficient amount of oil to a sliding surface and preventing the supplied oil from moving to an interior from the sliding surface; a sliding surface  3  supporting an outer peripheral surface of a shaft and a helical oiling surface  4  around a shaft axis of a bearing hole are adjacently formed on an inner peripheral surface of the bearing hole into which the shaft is inserted; a surface open rate at the sliding surface  3  is not larger than 10%; and a surface open rate at the oiling surface exceeds 10%.

Claim (Index 5):
A method of producing the oil-retaining sintered bearing according to  claim 1 , comprising:\n a forming step of a pressurized powder body forming a pressurized powder body by filling and pressurizing material powder in a cylindrical space between a die plate and a core rod of a die; a sintering step sintering the pressurized powder body; a reforming step reforming an inner peripheral surface and an outer peripheral surface of the pressurized powder body after sintering; a giving step of an oiling surface forming the oiling surface on the inner peripheral surface of the pressurized powder body after reforming, wherein in the forming step of the pressurized powder body, flat-shape powder and granular powder are mixed as the material powder and filled, and pressurized in a state in which the flat-shape powder is concentrated on an outer peripheral surface of the core rod; in the reforming step, a dense layer is formed by plastically flowing an inner peripheral surface of the pressurized powder body so as to reduce a surface open rate of the inner peripheral surface; and in the giving step of the oiling surface, the oiling surface is formed by removing the dense layer.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 94.0
- Lexical Diversity: 1.95161
- Patent Class: 384.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12856381', '11802394', '11817270', '15021771', '14777889']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.779480589269632
- 35 USC 102 Novelty (BERT): 0.476255622590735
- Combined Prediction Score: 0.7491580926017424
- Mean Citation Score: 194.246202
- Max Citation Score: 202.9981
- Similarity Product: 155.38208868579864

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