US4637358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug cap apparatus
Assignee: Honda Motor Co Ltd
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Filing: 1985-09-27
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Granted: 1987-01-20
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Expires: 2005-09-27
Abstract
Abstract A spark plug cap apparatus for an internal combustion engine having relatively deep and generally vertical spark plug receiving bores. The upper end of the bore is provided with an annular protrusion. A resilient head cover has a bent flange for extending over and sealably engaging the annular protrusion. The head cover has a downwardly extending seal lip for engaging the inside of the bore. A pipe is molded to the head cover and extends downwardly to engage the top of the spark plug. The spark wire extends through the head cover and pipe. A vent hole is provided in the head cover.
Inventors
- 👤 Yoshiki Yano
- 👤 Toshihiro Oikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/242; H; H01; H01T; H01T13/00; H01T13/02; H01T13/04; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
76 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a flange with means for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a downwardly extending seal lip for sealably engaing an inner surface of the bore.
Claim 2
Dependent Claim
76 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a flange with means for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a downwardly extending seal lip for sealably engaing an inner surface of the bore.
Claim 3
Dependent Claim
26 words
The spark plug cap apparatus of claim 1 wherein said cover means includes an opening therethrough for receiving a wire for connecting to a spark plug.
Claim 4
Dependent Claim
42 words
The spark plug cap apparatus of claim 1 wherein said seal lip is of a hollow cylindrical shape for allowing radial compression insertion into the bore, and said seal lip has an outer diameter slightly larger than the diameter of the bore.
Claim 5
Dependent Claim
64 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a vent hole.
Claim 6
Dependent Claim
64 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a vent hole.
Claim 7
Dependent Claim
26 words
The spark plug cap apparatus of claim 4 wherein said cover means includes an opening therethrough for receiving a wire for connecing to a spark plug.
Claim 8
Dependent Claim
27 words
The spark plug cap apparatus of claim 4 wherein said cover means includes a downwardly extending seal lip for sealably engaging an inner surface of the bore.
Claim 9
Dependent Claim
44 words
The spark plug cap apparatus of claim 6 wherein said seal lip is of a hollow cylindrical shape for allowing radial inward compression upon insertion into the bore, and said seal lip has an outer diameter slightly larger than the diameter of the bore.
Claim 10
Dependent Claim
28 words
The spark plug cap apparatus of claim 4 wherein said cover means is provided with an upwardly extending protrusion and said vent hole extends upwardly through said protrusion.
Claim 11
Dependent Claim
96 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a hollow cylindrical seal lip extending downwardly for sealably engaging the bore and an upwardly extending protrusion with a vent hole therethrough, said vent hole having a lower end located inwardly of said seal lip.
Claim 12
Dependent Claim
96 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper open end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and said cover means having a hollow cylindrical seal lip extending downwardly for sealably engaging the bore and an upwardly extending protrusion with a vent hole therethrough, said vent hole having a lower end located inwardly of said seal lip.
Claim 13
Dependent Claim
37 words
The spark plug cap apparatus of claim 9 wherein said cover means is of an elastic material, said member is elastically stretched over said annular protrusion, and said seal lip is elastically compressed inwardly in the bore.
Claim 14
Dependent Claim
74 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and a pipe means extending downwardly from said cover means for engaing a spark plug mounted in the bore.
Claim 15
Dependent Claim
74 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, and a pipe means extending downwardly from said cover means for engaing a spark plug mounted in the bore.
Claim 16
Dependent Claim
24 words
The spark plug cap apparatus of claim 11 wherein the lower end of said pipe means is enlarged for closely fitting within the bore.
Claim 17
Dependent Claim
86 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, a pipe means extending downwardly from said cover means for engaging a spark plug mounted in the bore, and a wire means passing through said pipe means to the spark plug.
Claim 18
Dependent Claim
86 words
A spark plug cap apparatus for an engine having an elongated and generally vertical spark plug receiving bore having an upper open end, comprising, an upwardly extending annular protrusion on said upper end of the bore, a cover means including a member for extending over and sealably engaging an outer surface of said annular protrusion, a pipe means extending downwardly from said cover means for engaging a spark plug mounted in the bore, and a wire means passing through said pipe means to the spark plug.
Claim 19
Dependent Claim
75 words
In a spark plug cap apparatus for an engine having a spark plug receiving bore with an outwardly extending annular protrusion with an outer surface at an upper end of the bore, a head cover including, an outwardly extending member for extending over and sealably engaging the outer surface of the annular protrusion, a downwardly extending seal lip for sealably engaging an inner surface of the bore, and a vent hole through the head cover.
Claim 20
Dependent Claim
75 words
In a spark plug cap apparatus for an engine having a spark plug receiving bore with an outwardly extending annular protrusion with an outer surface at an upper end of the bore, a head cover including, an outwardly extending member for extending over and sealably engaging the outer surface of the annular protrusion, a downwardly extending seal lip for sealably engaging an inner surface of the bore, and a vent hole through the head cover.
References Cited (Backward Citations)
US1484335A
Cited
US1689690A
Cited
US1801023A
Cited
US1785861A
Cited
US2301572A
Cited
US1993014A
Cited
US1979999A
Cited
US2171165A
Cited
US3697796A
Cited
US4135635A
Cited
US4078696A
Cited
US4267811A
Cited
US4354609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |