US4781729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for improving the efficiency of internal combustion engines
Assignee: BIDWELL HOWARD A US CITIZEN
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Filing: 1987-04-23
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Granted: 1988-11-01
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Expires: 2007-04-23
Abstract
Abstract The method of blending powdered magnesium into diesel engine fuel for increasing engine power output.
Inventors
- 👤 Howard Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:20
CPC Classifications
F; F02; F02M; F02M25/00; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A combustion process involving the burning of a diesel fuel in an internal combustion engine comprising: separately introducing into the combustion zone to the top of the dead center of the engine the fuel charge blend of fuel oil and of a finely powdered magnesium, to which combustion zone a charge of steam is flowed in the environment of compression of approximately 500 p.s.i. and of temperature approximating 800° F. with the fuel/magnesium mixture taking fire on contact with the steam.
Claim 2
Dependent Claim
81 words
A combustion process involving the burning of a diesel fuel in an internal combustion engine comprising: separately introducing into the combustion zone to the top of the dead center of the engine the fuel charge blend of fuel oil and of a finely powdered magnesium, to which combustion zone a charge of steam is flowed in the environment of compression of approximately 500 p.s.i. and of temperature approximating 800° F. with the fuel/magnesium mixture taking fire on contact with the steam.
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |