Carl A Roesler

US Patent:

48713031, Oct 3, 1989

Filed:

Aug 1, 1988

Appl. No.:

7/226744

Inventors:

Carl A. Roesler - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

F04B 2100

US Classification:

417434

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.