Anti-back-streaming carburetor valve
AssigneeCentral Coast Patent Agency, Inc.
InventorsDuncan Keller, Arthur Langlie
Life of this patent
Estimating the term…
Abstract
A valve for sealing a carburetor inlet of a first diameter, includes a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element, and a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the inlet allowing a free flow into the carburetor.
Claims21
A valve for sealing a carburetor inlet of a first diameter, comprising:
- a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element;
- and
- a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the inlet allowing a free flow into the carburetor.
An air filter device comprising:
- a base plate;
- a filter housing;
- and
- a valve for sealing a carburetor inlet of a first diameter, the valve including a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element;
- and
- a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the inlet allowing a free flow into the carburetor.
A method for preventing backflow of fuel vapor from an inlet opening of a first diameter in a carburetor, comprising steps of:
- (a) fashioning a valve element having a curved surface for sealing the inlet opening, and a through hole of substantially the first diameter extending through the valve element;
- (b) mounting the valve element rotably so that rotation to a first position causes the curved surface to block the inlet, and rotation to a second position aligns the through hole with the inlet;
- and
- (c) rotating the valve element to the first position to prevent backflow of fuel, and to the second position to allow air to flow into the inlet.
A valve assembly connected to a carburetion system comprising:
- a housing having at least one outlet opening of a first diameter leading to the carburetion system;
- a valve, the valve including a valve element having a curved surface for sealing the outlet opening, and a through hole of substantially the first diameter extending through the valve element;
- and
- a translation mechanism for rotating the valve element between a first position wherein the curved surface completely seals the opening and a second position wherein the through hole aligns with the outlet allowing a free flow toward the carburetion system.
Dependencies are inferred from the claim text.