US3762378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection means and process for making same
Assignee: Individual
•
Filing: 1971-11-08
•
Granted: 1973-10-02
•
Expires: 1991-11-08
Abstract
Abstract In an internal combustion engine, a fuel injector having a valve with an elongated hollow stem which functions as a conduit for fuel being delivered to the valve opening. A heater probe is telescopically disposed in the stem to preheat the fuel. The valve is biased by a calibrated spring arrangement that is suited for automatic assembly.
Inventors
- 👤 F Bitonti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
F; F02; F02M; F02M53/00; F02M53/04; F02M53/06; F02B; F02B3/00; F02M31/00; F02M31/02; F02M31/16; F02B2720/00; F02B2720/22; F02B2720/226; F02M2200/00; F02M2200/24; F02M2700/00; F02M2700/07; F02M2700/077; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
In an internal combustion engine, the combination comprising: an engine housing having a combustion chamber therein; a power member movably disposed in the combustion chamber; fuel injection means for deliverying fuel to said chamber for combustion including: a body mounted on said engine housing, said body having an inlet for receiving fuel, and an outlet for the passage of fuel from the body toward the combustion chamber; a valve member mounted in the body adjacent said outlet so as to be movable toward an open position to allow fuel passage through the outlet; a bias member mounted in the body and connected to the valve member to urge it toward a closed position to block fuel passage through the outlet; an elongated valve stem connected to the valve member, and having an inlet for receiving fuel, and an outlet adjacent the valve member for passing fuel; and electrically operated heating means mounted on the body, including an elongated heating probe disposed in the inlet of the valve stem, the heating probe having a length such that it is disposed adjacent the outlet of the valve stem at such times as the valve member is disposed in said closed position.
Claim 2
Dependent Claim
199 words
In an internal combustion engine, the combination comprising: an engine housing having a combustion chamber therein; a power member movably disposed in the combustion chamber; fuel injection means for deliverying fuel to said chamber for combustion including: a body mounted on said engine housing, said body having an inlet for receiving fuel, and an outlet for the passage of fuel from the body toward the combustion chamber; a valve member mounted in the body adjacent said outlet so as to be movable toward an open position to allow fuel passage through the outlet; a bias member mounted in the body and connected to the valve member to urge it toward a closed position to block fuel passage through the outlet; an elongated valve stem connected to the valve member, and having an inlet for receiving fuel, and an outlet adjacent the valve member for passing fuel; and electrically operated heating means mounted on the body, including an elongated heating probe disposed in the inlet of the valve stem, the heating probe having a length such that it is disposed adjacent the outlet of the valve stem at such times as the valve member is disposed in said closed position.
Claim 3
Dependent Claim
33 words
A combination as defined in claim 1, including a pump connected to the inlet of said body for deliverying fuel at a pressure sufficient to move the valve member toward said open position.
Claim 4
Dependent Claim
24 words
A combination as defined in claim 1, in which the valve member has a frusto-conical surface engageable with a seat having a complementary shape.
Claim 5
Dependent Claim
36 words
A combination as defined in claim 1, in which the body has an annular retainer with a bore slideably receiving the valve stem, the retainer being shaped to seat the valve member in said closed position.
Claim 6
Dependent Claim
77 words
A combination as defined in claim 4, including a bias member engaged with the retainer and a second retainer mounted on the valve sTem so as to be movable therewith, the second retainer being engaged with the bias member and so spaced with respect to the first mentioned retainer whereby the bias member prevents motion of the valve member from said closed position unless fuel of a predetermined pressure urges the valve member toward said open position.
Claim 7
Dependent Claim
33 words
A combination as defined in claim 1, in which the valve stem is moved with respect to the heating probe as the valve member is moved from its open toward its closed positions.
Claim 8
Dependent Claim
36 words
A combination as defined in claim 1, including a source of fuel, heat exchanger means, and a fuel pump for deliverying fuel from said source through the heat exchanger means to the inlet of said body.
Claim 9
Dependent Claim
56 words
A combination as defined in claim 7, in which the heat exchanger means includes a head having an exhaust passage for passing combustion products from the combustion chamber, and a conduit for receiving fuel from the fuel pump, the conduit forming a coil disposed in the path of combustion products being passed through the exhaust passage.
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |