PATENT CLAIM ANALYSIS

Application Number: 15949296
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["123", "14300B"]

Abstract:
An igniter, such as a corona igniter for an internal combustion engine, and a method of manufacturing the igniter, are provided. The igniter includes an insulator with enlarged upper and lower end regions extending axially beyond opposite ends of a constrained, reduced diameter region of a shell through passage. The enlarged lower end region of the insulator is disposed axially outwardly of a lower end of the shell. The insulator is hermetically sealed to the shell and is permanently fixed against being removed axially outwardly from the shell. The method can include conforming the shell to the contour of the insulator by plastically deforming the shell, or casting the shell about the insulator. Alternatively, separate pieces of metal can be disposed around the insulator to form the shell which is conformed to the insulator.

Claim (Index 9):
A corona igniter according to  claim 1 , wherein said central electrode is formed of an electrically conductive material for receiving a high radio frequency voltage;\n said central electrode extends longitudinally along a center axis from a terminal end to an electrode firing end; said central electrode includes a corona-enhancing tip for emitting a radio frequency electric field in a range of 0.9 to 1.1 MHz; said corona enhancing tip includes a plurality of radially outwardly extending prongs; said prongs are formed of nickel, nickel alloy, copper, copper alloy, iron, or iron alloy; said insulator is a monolithic piece of electrically insulating material extending longitudinally from an insulator upper end to an insulator nose end; said insulator outer surface includes an insulator nose region extending continuously and tapering from said insulator lower end region to said insulator nose end; said maximum first diameter ID 1  of said insulator intermediate region is constant and extends continuously from said insulator upper end region to said insulator lower end region; said insulator upper end region presents a bulbous shape; said maximum first diameter ID 1  extending along said insulator intermediate region is constant; said minimum third diameter ID 3  of said insulator lower end region is constant; said insulator inner surface defines a through bore receiving said central electrode therein; said through bore extends longitudinally along said center axis from said insulator upper end to said insulator nose end; said metal of said shell is steel, said steel is plastically deformable; said shell outer surface faces radially outwardly and away from said center axis from a shell upper end to a shell lower end; said shell inner surface surrounds said insulator intermediate and upper end regions; said insulator lower end region extends axially outwardly from said shell lower end; said threaded region of said shell extends axially to a shell shoulder; said shell shoulder provides a seat for sealing abutment against a mount surface of an engine cylinder head; said shoulder extends radially outwardly and transitions into an axially extending enlarged region of said shell outer surface; said shell is plastically deformed along said threaded region adjacent said shoulder; said shell inner surface includes a shell upper region extending opposite said enlarged region of said shell outer surface; said shell upper region extends radially outwardly to provide a minimum upper diameter SD 2 ; said minimum upper diameter SD 2  is greater than said minimum second diameter ID 2  of said insulator outer surface; said insulator is permanently fixed against being removed axially outwardly from the shell; and a braze, sealing material, and/or gasket provides a hermetic seal between said insulator outer surface and said shell inner surface.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 91.0
- Lexical Diversity: 2.02778
- Patent Class: 123.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13843336', '15240652', '14742064', '15240502', '13589617']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7901317860929656
- 35 USC 102 Novelty (BERT): 0.5030363222402989
- Combined Prediction Score: 0.761422239707699
- Mean Citation Score: 304.947758
- Max Citation Score: 312.92624
- Similarity Product: 246.94283248687745

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