Patent US3630698A successfully refreshed from Google Patents.
US3630698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel system
Assignee: JOSEPH H BALDWIN
•
Filing: 1970-01-21
•
Granted: 1971-12-28
•
Expires: 1990-01-21
Abstract
Abstract A fuel system constructed to furnish gaseous fuel, rather than liquid fuel, to an internal combustion engine. The delivery system converts liquid fuel to its gaseous state by lowering the pressure on the surface of the liquid, thereby causing the liquid to boil thereby providing the vapor which is fed to a venturi and thence into the intake manifold.
Inventors
- 👤 Joseph H Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:40
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/06; F02M21/04; F02B; F02B43/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y10; Y10S; Y10S261/00; Y10S261/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
The fuel system of claim 6 wherein the means to maintain a pool of liquid vaporizable fuel in the evaporating chamber is a float and needle valve connected to a fuel supply line.
Claim 2
Dependent Claim
23 words
The fuel system of claim 2 wherein the valve means has a plurality of holes which mate with like holes in the venturi.
Claim 3
Dependent Claim
26 words
The fuel system of claim 3 further including a butterfly valve located in the delivery tube for regulating the flow of gaseous vapor through the tube.
Claim 4
Dependent Claim
21 words
The fuel system of claim 4 wherein the valve means and the butterfly valve are mechanically coupled to the engine accelerator.
References Cited (Backward Citations)
US2856169A
Cited
US2957759A
Cited
US3081160A
Cited
US3171467A
Cited
US3227427A
Cited
US3279770A
Cited
US3433608A
Cited
US3464803A
Cited
US3486524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |