US3729273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-tank fuel pump reservoir
Assignee: Bendix Corp
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Filing: 1970-11-23
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Granted: 1973-04-24
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Expires: 1990-11-23
Abstract
Abstract A fuel reservoir arranged about the intake or suction conduit of a fuel pump supply line in a fuel tank utilized by internal combustion engines, consisting of a cylindrical container having a bottom and open top and to which a venturi nozzle is mounted. The venturi receives the return fuel and injects it into the reservoir. The auxiliary fuel is provided through an inlet opening at the throat of the venturi. The return flow of excess fuel delivered by said fuel pump creates a low pressure zone at the throat of the venturi thereby sucking the auxiliary fuel into the venturi causing both auxiliary fuel and return fuel to be injected into the reservoir in a vortical motion about said suction conduit.
Inventors
- 👤 Y Shimrony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:07
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/02; F02M37/025; F04; F04D; F04D29/00; F04D29/70; F04D29/708; F04D9/00; F04D9/04; F04D9/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A fuel reservoir for the intake of an internal combustion engine fuel pump or the like of the type delivering fuel to the engine in excess of the engine requirements and wherein the excess of fuel delivered to the engine is returned to the fuel tank by a return line, the intake for the pump being disposed within said reservoir, comprising: a generally cylindrical structure having a base, a side wall, the side wall having an aperture; and a venturi for receiving said return fuel mounted to said wall adjacent said base, said venturi having a flow channel extending therethrough generally tangentially relative to said side wall and forming an inlet passage, a throat, and a discharge passage respectively in the flow direction, said venturi also having at least one radial orifice therein opening into said throat, said venturi being mounted to said wall such that said radial orifice and said side wall aperture are aligned.
Claim 2
Dependent Claim
156 words
A fuel reservoir for the intake of an internal combustion engine fuel pump or the like of the type delivering fuel to the engine in excess of the engine requirements and wherein the excess of fuel delivered to the engine is returned to the fuel tank by a return line, the intake for the pump being disposed within said reservoir, comprising: a generally cylindrical structure having a base, a side wall, the side wall having an aperture; and a venturi for receiving said return fuel mounted to said wall adjacent said base, said venturi having a flow channel extending therethrough generally tangentially relative to said side wall and forming an inlet passage, a throat, and a discharge passage respectively in the flow direction, said venturi also having at least one radial orifice therein opening into said throat, said venturi being mounted to said wall such that said radial orifice and said side wall aperture are aligned.
Claim 3
Dependent Claim
136 words
In combination with a fuel pump or an intake line for a fuel pump disposed within a fuel tank used by internal combustion engines, and having an excess engine fuel return line therein, a fuel reservoir arranged about said fuel pump or intake line comprising: a cylindrical structure having a base and a relatively smooth continuous side wall extending upwardly therefrom, said wall having at least one aperture therethrough adjacent said base, and a venturi mounted tangential to the interior of said wall, said venturi having a flow channel including a throat extending therethrough for receiving and delivering said return fuel to the reservoir, said venturi also having a radial orifice opening into said flow channel at the throat of said venturi, said orifice and said aperture in said wall being aligned one with the other.
Claim 4
Dependent Claim
136 words
In combination with a fuel pump or an intake line for a fuel pump disposed within a fuel tank used by internal combustion engines, and having an excess engine fuel return line therein, a fuel reservoir arranged about said fuel pump or intake line comprising: a cylindrical structure having a base and a relatively smooth continuous side wall extending upwardly therefrom, said wall having at least one aperture therethrough adjacent said base, and a venturi mounted tangential to the interior of said wall, said venturi having a flow channel including a throat extending therethrough for receiving and delivering said return fuel to the reservoir, said venturi also having a radial orifice opening into said flow channel at the throat of said venturi, said orifice and said aperture in said wall being aligned one with the other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |