Fuel drain safety system for fuel pumps and the like

Details Fuel drain safety system for fuel pumps and the like Fuel drain safety system for fuel pumps and the like

1988-08-01

1989-10-03

Croyle, Carlton R.

Pumps

Including separate port on noncyclic valve for draining pump...

417360, 4174231, 41743314, 417313, 415201, F04B 2100

Patent

active

048713031

ABSTRACT:
A fuel drain system for use in a fuel pump for an aircraft fuel tank or the like which includes a housing and a pump cartridge positionable in the housing for removal therefrom. A drain plug is removably mounted on and projects from the pump cartridge for draining residual fuel from the cartridge prior to removal of the cartridge from the housing. A stop is located in a path of movement of the projecting drain plug to prevent removal of the pump cartridge from the housing unless the drain plug is removed from the pump cartridge. This provides for verification that the main inlet closure to the fuel pump has been closed and, thus, prevents massive fuel leakage.

REFERENCES:
patent: 4318667 (1982-03-01), Miller
patent: 4324532 (1982-04-01), Knife
patent: 4781527 (1988-11-01), Miller

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