US4766861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition device for air-compressing internal combustion engine
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1987-09-14
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Granted: 1988-08-30
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Expires: 2007-09-14
Abstract
Abstract An ignition device for an air-compressing internal combustion engine which, in addition to reducing electrode erosion, requires low energy consumption. The ignition device includes a high-voltage spark plug (2) to which a casing (6) is connected, a rod (8) inserted coaxially into the casing (6) and an incandescent helix (11) wound around the rod (8).
Inventors
- 👤 Gerhard Finsterwalder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/001; H; H01; H01T; H01T13/00; H01T13/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
An ignition device for an air-compressing internal combustion engine having a combustion chamber, said ignition device comprising: a high voltage spark plug serving as the source of fuel ignition including a shell electrode extending into said combustion chamber, a casing surrounding said electrode and presenting at least one fuel inlet opening, said casing including a wall disposed within said combustion chamber, a rod secured to said wall and extending into the interior of said casing and an incandescent helix coiled about said rod and supported at one of its ends on said wall and at the other of its ends on said shell electrode of said spark plug.
Claim 2
Dependent Claim
108 words
An ignition device for an air-compressing internal combustion engine having a combustion chamber, said ignition device comprising: a high voltage spark plug serving as the source of fuel ignition including a shell electrode extending into said combustion chamber, a casing surrounding said electrode and presenting at least one fuel inlet opening, said casing including a wall disposed within said combustion chamber, a rod secured to said wall and extending into the interior of said casing and an incandescent helix coiled about said rod and supported at one of its ends on said wall and at the other of its ends on said shell electrode of said spark plug.
Claim 3
Dependent Claim
20 words
The ignition device of claim 1 wherein said rod has a hollow chamber which is open to said combustion chamber.
Claim 4
Dependent Claim
19 words
The ignition device of claim 2 wherein said hollow chamber is substantially coextensive with the length of said rod.
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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |