PATENT CLAIM ANALYSIS

Application Number: 15761710
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-12
Patent Classification: ["277", "641000"]

Abstract:
To provide a sealing structure for a housing join of a fluid machine such as a compressor or expander, which can prevent a twist in an O ring and resultant reduction in sealing property. The sealing structure for a housing join of a fluid machine, which is used to seal a join between a first housing member  1  and a second housing member  2  that constitute a housing of the fluid machine, includes: a ring groove  14  formed in an end surface  11  of the first housing member  1 , and an O ring  3  to be inserted into the ring groove  14 . The ring groove  14  has an inverted trapezoid shape in cross section, and when the first housing member  1  and the second housing member  2  are joined together, the inserted O ring  3  is compressed between a bottom surface  14 a  and an end surface  21  of the second housing member  2  and the compressed O ring  3  comes into contact with the bottom surface  14 a  and both of a pair of side surfaces  14 b,  14 c  extending upward from the bottom surface  14 a  at its opposite ends in a width direction.

Claim (Index 1):
A sealing structure for a housing join of a fluid machine, which is used to seal a join between first and second housing members constituting a housing of the fluid machine, the sealing structure comprising:\n a ring groove formed in an end surface of the first housing member; and an O ring to be inserted into the ring groove, wherein the ring groove has an inverted trapezoid shape in cross section, of which a width of an opening edge is larger than a width of a bottom surface, when the first and second housing members are joined together, the inserted O ring is compressed between the bottom surface and an end surface of the second housing member and the compressed O ring comes into contact with the bottom surface and both of a pair of side surfaces extending upward from the bottom surface at its opposite ends in a width direction, one side surface of the pair of side surfaces of the ring groove is formed as a perpendicular surface at right angle to the bottom surface and the other side surface of the pair of side surfaces of the ring groove is formed as an inclined surface that gradually increases a distance from the perpendicular surface in a direction from the bottom surface to the opening edge, and the one side surface formed as the perpendicular surface is positioned close to an outer wall surface of the housing, and the other side surface formed as the inclined surface is positioned close to an inner wall surface of the housing, at which a pressure becomes higher than at the outer wall surface during operation of the fluid machine.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 90.0
- Lexical Diversity: 2.3908
- Patent Class: 277.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15764401', '12297718', '15451803', '13623372', '14946982']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7809743584933089
- 35 USC 102 Novelty (BERT): 0.4509565816702696
- Combined Prediction Score: 0.747972580811005
- Mean Citation Score: 164.47938200000004
- Max Citation Score: 166.31065
- Similarity Product: 139.94672176395358

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

Dataset: test