US3762385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air fuel preheater for internal combustion engine
Assignee: Individual
•
Filing: 1971-03-29
•
Granted: 1973-10-02
•
Expires: 1991-03-29
Abstract
Abstract A water-jacketed fuel vaporizing chamber is interposed between the carburetor and the intake manifold on an internal combustion engine. The flow path is tortuous and of considerable length which induces some turbulence and insures full vaporization of the gasoline. Carbon monoxide emission was reduced 73 percent on a test vehicle to a level below the 1975 Federal Standards. Unburned hydrocarbons and nitrogen oxides were respectively reduced 40.6 percent and 36 percent but not to the 1975 Federal Standards.
Inventors
- 👤 H Hollnagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:18
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/10; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A combination as set forth in claim 1 wherein said housing includes a plurality of sleeves extending between said top and bottom to define bores through said housing isolated from said flow path and said passages, and fastening means extending through said bores for connecting said carburetor and said housing to said manifold.
Claim 2
Dependent Claim
30 words
A combination as set forth in claim 1 wherein said housing includes an inlet and outlet to said passage and a PCV valve connection in fluid communication with said passage.
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) | 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 |