Patent US3620456A successfully refreshed from Google Patents.
US3620456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection nozzle for internal combustion engines
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1970-07-15
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Granted: 1971-11-16
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Expires: 1990-07-15
Abstract
Abstract An injection nozzle for fuel injection engines with a nozzle needle acted upon by a plurality of springs, in which the resultant of the spring forces is conveyed through a universally journaled spring dish upon the nozzle needle the axis of which is in substantially axial alignment with said resultant.
Inventors
- 👤 Josef Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:33
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
An injection nozzle for fuel injection internal combustion engines which includes: nozzle housing means having conduit means therein for connection to a fuel supply, nozzle body means connected to said nozzle housing means and having passage means therethrough and also having an axial bore therethrough provided with nozzle opening means, nozzle needle means axially movable in said axial bore for controlling said nozzle opening means, said nozzle body having annular fuel-receiving chamber means surrounding said needle means and communicating with said nozzle opening means, spring housing means arranged within said nozzle housing means and having conduit means therein establishing fuel fluid communication between said conduit means in said nozzle housing means and said passage means in said nozzle body means, bearing means supported by said nozzle needle means and extending into said spring housing means, spring dish means supported by said bearing means, and a plurality of spring means arranged within said spring housing means and under preload having one end engaging said spring dish means, the resultant line of force of said plurality of spring means passing through said bearing means and being in substantially axial alignment with the axis of said needle means.
Claim 2
Dependent Claim
195 words
An injection nozzle for fuel injection internal combustion engines which includes: nozzle housing means having conduit means therein for connection to a fuel supply, nozzle body means connected to said nozzle housing means and having passage means therethrough and also having an axial bore therethrough provided with nozzle opening means, nozzle needle means axially movable in said axial bore for controlling said nozzle opening means, said nozzle body having annular fuel-receiving chamber means surrounding said needle means and communicating with said nozzle opening means, spring housing means arranged within said nozzle housing means and having conduit means therein establishing fuel fluid communication between said conduit means in said nozzle housing means and said passage means in said nozzle body means, bearing means supported by said nozzle needle means and extending into said spring housing means, spring dish means supported by said bearing means, and a plurality of spring means arranged within said spring housing means and under preload having one end engaging said spring dish means, the resultant line of force of said plurality of spring means passing through said bearing means and being in substantially axial alignment with the axis of said needle means.
Claim 3
Dependent Claim
25 words
An injection nozzle according to claim 1, in which said spring dish means is self-adjustably and in a universal manner supported by said bearing means.
Claim 4
Dependent Claim
24 words
An injection nozzle according to claim 2, in which said bearing means includes a pointed pin having its point support said spring dish means.
Claim 5
Dependent Claim
61 words
An injection nozzle according to claim 1, in which said spring dish means and the inner contour of said spring housing means is in conformity with the outer contour of said plurality of spring means, and in which said conduit means of said spring housing means is arranged within the area of the greatest wall thickness of said spring housing means.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |