Reserve fuel shut-off valve

Patent · Tue Feb 28 04:00:00 EST 1989

OSTI ID:6312930

Tuckey, C H

This patent describes a fuel system for vehicles which includes a fuel tank and a vertical canister mounted within the fuel tank, and a fuel pump mounted in the canister, that improvement which includes: a base plate in the canister spaced from the bottom of the tank having a first fuel inlet passage to be connected to the inlet of a pump, and having a second passage formed by a well upstanding from the base plate to admit fuel from the canister to the area below the base plate, a first float valvecomprising a cap of inverted cup-shaped buoyant material construction having a base overlying the well and a peripheral wall surrounding the well to close the second passage when fuel in the canister approaches the base plate, and means positioned within the canister above the well to capture the first float valve over the well with the peripheral wall surrounding the well, a second valve associated with the second passage to open and close the passage, and a biased diaphragm means responsive to reduced pressure in the pump inlet connected to the second valve to open the second valve in response to lowered pressure above the diaphragm, thus allowing reserve fuel in the canister to reach the pump inlet.

• Assignee: Walbro Corp., Cass City, MI
• Patent Number(s): US 4807582
• OSTI ID: 6312930
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000 -- Petroleum-- Transport
Handling
& Storage
024000* -- Petroleum-- Storage-- (-1989)
CONTAINERS
CONTROL
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLOW REGULATORS
FUELS
FUNCTIONS
LIQUID FUELS
MATERIALS HANDLING
PLATES
PRESSURE CONTROL
PUMPING
PUMPS
RESPONSE FUNCTIONS
STORAGE
TANKS
VALVES
VEHICLES