US4930456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfected feeding devices for internal combustion engines
Assignee: Individual
•
Filing: 1989-11-15
•
Granted: 1990-06-05
•
Expires: 2009-11-15
Abstract
Abstract A device to be attached to the air-fuel inlet manifold of internal combustion engines. In particular on the carburetor inlet manifold and connected to the oil sump to convey oil saturated air that is then mixed with the inlet air of the engine. It improves the combustibility of the air-petrol (fuel) mixture resulting in an increase in engine efficiency.
Inventors
- 👤 Cesare Schiavi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:38
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A fuel injection device designed for internal combustion engines having a carburetor with an inlet manifold, the inlet manifold having a central axis wherein means are provided for directing a flow of oil saturated air developed in an oil sump to the carburettor inlet manifold, wherein said means comprise a nozzle connected between the oil sump of the internal combustion engine and the carburetor inlet manifold; the axis of said nozzle being coincident with the central axis of the carburetor inlet manifold.
Claim 2
Dependent Claim
82 words
A fuel injection device designed for internal combustion engines having a carburetor with an inlet manifold, the inlet manifold having a central axis wherein means are provided for directing a flow of oil saturated air developed in an oil sump to the carburettor inlet manifold, wherein said means comprise a nozzle connected between the oil sump of the internal combustion engine and the carburetor inlet manifold; the axis of said nozzle being coincident with the central axis of the carburetor inlet manifold.
Claim 3
Independent Claim
27 words
The device as described in claim "1" wherein said means comprises a nozzle connected between the engine oil sump and the inlet manifold of a diesel engine.
Claim 4
Dependent Claim
20 words
The device as described in claim 1 "3" wherein the mouth of the nozzle outlet has an inward conical profile.
Claim 5
Dependent Claim
41 words
The device as described in claim 3 wherein the mouth of the nozzle is placed at a pre-determined distance from the inlet manifold such that when the oil saturated air is sprayed, it covers the maximum cross-sectional area of the manifold.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |