US3824974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply system with pressure regulator
Assignee: Motors Liquidation Co
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Filing: 1972-11-03
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Granted: 1974-07-23
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Expires: 1992-11-03
Abstract
Abstract A fluid pressure regulator to control the pressure of fuel pumped by an electric motor fuel pump. Carbon piles are sandwiched between two conducting plates in series with the fuel pump motor; springs cause the conducting plates to compress the carbon piles between them; and a chamber in the fuel line downstream from the pump has a flexible diaphragm linked to one of the conducting plates to vary the pressure on the carbon piles inversely with the pressure in the fuel line.
Inventors
- 👤 Flame F La
- 👤 W Sones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:14
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F04; F04B; F04B49/00; F04B49/08; F04B49/20; F02M2037/085; F02M2037/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
351 words
An engine fuel supply system including a fuel tank, an electric motor fuel pump for pumping fluid from the tank to the engine, a source of electric current and a fluid pressure regulator, the fluid pressure regulator comprising: a housing; a stationary conducting plate in the housing, the stationary plate having a plurality of holes therethrough; a movable conducting plate in the housing substantially parallel to the stationary conducting plate, the movable conducting plate having a plurality of holes axially aligned with, and of smaller diameter than, the holes in the stationary conducting plate; a plurality of carbon piles sandwiched between the conducting plates in electrical contact therewith, each carbon pile having a hole axially aligned with, and of larger diameter than, a hole in the movable conducting plate, each carbon pile being connected through the conducting plates in parallel with each other and in series with the electric motor fuel pump and the source of electric current to vary the speed of the electric motor fuel pump inversely with the resistance of the carbon piles; a plate in the housing adjustable with respect thereto, the adjustable plate being substantially parallel to the movable plate; a plurality of coil springs between the adjustable and movable plates, each of the springs being axially aligned with a hole in the movable plate; an actuator having a plurality of stops projecting therefrom, each of the stops projecting through holes in the stationary conducting plate and carbon pile and abutting on the movable conducting plate, each of the stops having a finger projecting therefrom through one of the holes in the movable conducting plate and coaxially within one of the coil springs to anchor the spring; and an expansible chamber motor in the housing through which fuel is pumped on its way to the engine, the expansible chamber motor comprising a flexible diaphragm, the flexible diaphragm biasing the actuator against the movable conducting plate in opposition to the coil springs to vary the pressure across each carbon pile inversely with the pressure in the fuel line and thereby vary the resistance of the carbon piles.
Claim 2
Dependent Claim
351 words
An engine fuel supply system including a fuel tank, an electric motor fuel pump for pumping fluid from the tank to the engine, a source of electric current and a fluid pressure regulator, the fluid pressure regulator comprising: a housing; a stationary conducting plate in the housing, the stationary plate having a plurality of holes therethrough; a movable conducting plate in the housing substantially parallel to the stationary conducting plate, the movable conducting plate having a plurality of holes axially aligned with, and of smaller diameter than, the holes in the stationary conducting plate; a plurality of carbon piles sandwiched between the conducting plates in electrical contact therewith, each carbon pile having a hole axially aligned with, and of larger diameter than, a hole in the movable conducting plate, each carbon pile being connected through the conducting plates in parallel with each other and in series with the electric motor fuel pump and the source of electric current to vary the speed of the electric motor fuel pump inversely with the resistance of the carbon piles; a plate in the housing adjustable with respect thereto, the adjustable plate being substantially parallel to the movable plate; a plurality of coil springs between the adjustable and movable plates, each of the springs being axially aligned with a hole in the movable plate; an actuator having a plurality of stops projecting therefrom, each of the stops projecting through holes in the stationary conducting plate and carbon pile and abutting on the movable conducting plate, each of the stops having a finger projecting therefrom through one of the holes in the movable conducting plate and coaxially within one of the coil springs to anchor the spring; and an expansible chamber motor in the housing through which fuel is pumped on its way to the engine, the expansible chamber motor comprising a flexible diaphragm, the flexible diaphragm biasing the actuator against the movable conducting plate in opposition to the coil springs to vary the pressure across each carbon pile inversely with the pressure in the fuel line and thereby vary the resistance of the carbon piles.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |