US3710772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fouling spark ignition devices
Assignee: ELDAPAT GENERAL Inc
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Filing: 1970-08-07
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Granted: 1973-01-16
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Expires: 1990-08-07
Abstract
Abstract An axially elongated member is provided with an antechamber at one end thereof for receivably engaging the firing end of a spark ignition device. The axially elongated member includes a diverging-converging exit nozzle in its other end and a narrow bore or port extending between and connecting the antechamber with the exit nozzle. The nozzle''s exit aperture is formed in the end face of the member and thus defines an annular baffle means axially displaced from the point where the narrow bore opens into the exit nozzle. Because of its diverging-converging construction the interior recess of the nozzle is enlarged with respect to the diameter of its exit aperture which latter, in turn, is enlarged with respect to the diameter of the narrow bore or port. The axial member further includes means for preventing a fluid flowing along a wall surface perpendicular to the axis thereof from flowing over the end face of its other end and entering the enlarged interior recess of the exit nozzle.
Inventors
- 👤 R Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:16
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/54
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
173 words
Apparatus for use with a spark ignition device including an insulting core body and a center electrode carried by said core body and protruding thErefrom at one end thereof, comprising: an axially extending member adapted for cooperative engagement with said spark ignition device; said member including an interior cavity for receivably enclosing said protruding center electrode, an exit mouth axially displaced from said cavity, and a connecting port extending between said cavity and said exit mouth, one end of said connecting port communicating with said interior cavity and the other end of said connecting port communicating with said exit mouth; said exit mouth having an exit aperture axially displaced from said other end of said connecting port, the diameter of said exit aperture being greater than the diameter of said port, said exit mouth forming a diverging-converging interior recess having a major diameter axially disposed between said other end of said connecting port and said exit aperture, said major diameter of said diverging-converging recess being greater than the diameter of said exit aperture.
Claim 2
Dependent Claim
173 words
Apparatus for use with a spark ignition device including an insulting core body and a center electrode carried by said core body and protruding thErefrom at one end thereof, comprising: an axially extending member adapted for cooperative engagement with said spark ignition device; said member including an interior cavity for receivably enclosing said protruding center electrode, an exit mouth axially displaced from said cavity, and a connecting port extending between said cavity and said exit mouth, one end of said connecting port communicating with said interior cavity and the other end of said connecting port communicating with said exit mouth; said exit mouth having an exit aperture axially displaced from said other end of said connecting port, the diameter of said exit aperture being greater than the diameter of said port, said exit mouth forming a diverging-converging interior recess having a major diameter axially disposed between said other end of said connecting port and said exit aperture, said major diameter of said diverging-converging recess being greater than the diameter of said exit aperture.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 wherein said axially extending member includes a remotely disposed end face defining its axial extremity, said exit aperture being located in said end face.
Claim 4
Dependent Claim
31 words
The apparatus of claim 1 wherein said major diameter of said converging-diverging recess is axially located relatively nearer to said exit aperture than to said other end of said connecting port.
Claim 5
Dependent Claim
34 words
The apparatus of claim 2 wherein said end face is substantially flat and defines an annular radially extending baffle axially displaced from said other end of said connecting port and surrounding said exit aperture.
Claim 6
Dependent Claim
56 words
The apparatus of claim 2 wherein said end face of said axially extending member is adapted for cooperation with the inner wall surface of an internal combustion engine and includes means for preventing a fluid flowing along said inner wall surface from flowing over said end face and entering the interior recess of said exit mouth.
Claim 7
Dependent Claim
47 words
The apparatus of claim 5 wherein said last mentioned means includes an annular groove recessed into the exterior surface of said axially extending member near said end face, said annular groove being located adjacent to said inner wall surface when said member is in cooperative engagement therewith.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6 wherein said end face is flush with respect to said inner wall surface.
Claim 9
Dependent Claim
15 words
The apparatus of claim 6 wherein said end face extends beyond said inner wall surface.
Claim 10
Dependent Claim
38 words
The apparatus of claim 1 wherein said insulating core body is positioned within an outer shell member surrounding said protruding electrode, and said interior cavity is adapted to threadedly receive said outer shell member in sealing engagement therewithin.
Claim 11
Dependent Claim
24 words
The apparatus of claim 1 wherein said insulated core body is positioned within an outer shell member integrally joined with said axially extending member.
Claim 12
Dependent Claim
18 words
The apparatus of claim 1 wherein said axially extending member comprises the wall of an internal combustion engine.
Claim 13
Dependent Claim
34 words
The apparatus of claim 5 wherein said axially extending member includes an externally threaded portion adjacent said end face for engaging an internally threaded spark plug receiving port communicating with said inner wall surface.
Claim 14
Dependent Claim
55 words
The apparatus of claim 1 wherein said diverging-converging interior recess forming said exit mouth comprises a pair of inverted frusto-conical chambers having an imaginary common base the diameter of which conforms to said major diameter, said common base being axially located nearer to said exit aperture than to said other end of said connecting port.
Claim 15
Dependent Claim
153 words
Anti-fouling means for use with a spark plug device, comprising: an outer shell member having an antechamber at one end and an exit nozzle at the other end, narrow passageway means for communicating the inner end of said antechamber with the inner end of said exit nozzle, said exit nozzle having means for preventing fluid such as oil from entering the narrow passageway means and collecting in said antechamber when said outer shell Member is maintained in a substantially horizontal position, said last mentioned means including an annular lip formed at the outer extremity of said exit nozzle, said annular lip defining an exit aperture of smaller diameter than the inner portion of said nozzle, said narrow passageway mans being of smaller diameter than said aperture whereby any oil tending to collect within the inner portions of said nozzle will flow outwardly over said lip before backflowing through said passageway into said antechamber.
Claim 16
Dependent Claim
153 words
Anti-fouling means for use with a spark plug device, comprising: an outer shell member having an antechamber at one end and an exit nozzle at the other end, narrow passageway means for communicating the inner end of said antechamber with the inner end of said exit nozzle, said exit nozzle having means for preventing fluid such as oil from entering the narrow passageway means and collecting in said antechamber when said outer shell Member is maintained in a substantially horizontal position, said last mentioned means including an annular lip formed at the outer extremity of said exit nozzle, said annular lip defining an exit aperture of smaller diameter than the inner portion of said nozzle, said narrow passageway mans being of smaller diameter than said aperture whereby any oil tending to collect within the inner portions of said nozzle will flow outwardly over said lip before backflowing through said passageway into said antechamber.
Claim 17
Dependent Claim
66 words
The apparatus of claim 14 wherein said other end of said outer shell member is adapted for cooperation with the inner wall surface of an engine, and said last mentioned means further comprises means exteriorly formed with respect to said exit nozzle in the vicinity of said wall surface for preventing said fluid as may be flowing along said wall surface from entering said exit nozzle.
Claim 18
Dependent Claim
25 words
The apparatus of claim 15 in which said means exteriorily formed with respect to said exit nozzle comprises an annular groove surrounding said exit nozzle.
Claim 19
Dependent Claim
51 words
The apparatus of claim 16 in which said annular groove defines an outwardly flared extremity at said other end of said outer shell member, said outwardly flared extremity terminating in a substantially flat end face, said exit nozzle having its exit aperture located in the plane of said flat end face.
Claim 20
Dependent Claim
21 words
The apparatus of claim 14 wherein said antechamber is adapted to receivably engage the firing end of said spark plug device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |