초록 ▼

A cartridge-type pump particularly adapted for aircraft or rotorcraft fuel systems incorporates a pump housing which is mounted in a wall of the fuel tank, which housing defines a cartridge pump cavity and a fuel inlet and a fuel outlet. A cartridge-type pump is received in the pump cavity with port

A cartridge-type pump particularly adapted for aircraft or rotorcraft fuel systems incorporates a pump housing which is mounted in a wall of the fuel tank, which housing defines a cartridge pump cavity and a fuel inlet and a fuel outlet. A cartridge-type pump is received in the pump cavity with ports which communicate with the inlet and the outlet. The inlet is provided with an inlet valve which is normally biased to the closed position and is retained in the open position when the pump cartridge is seated in the pump housing so that upon removal of the cartridge, the inlet is automatically closed preventing loss of fuel from the tank. The cartridge is provided with a handle which, in a stored position, operates the inlet valve and which also serves to cam or lift the cartridge out of its seated position and which also operates to cam or force the cartridge into a seated position when the cartridge is being re-installed. The pump is further provided with a bleed valve through which air entrapped within the pump may be automatically purged and which provides for flow of fluid over the pump for the purpose of cooling the pump and lubricating the pump bearings.

대표청구항 ▼

A cartridge pump assembly in which a pump housing is positioned within a tank of liquid to be pumped and a motor-driven cartridge pump unit is removably received in said pump housing, the improvement comprising: means in said pump housing defining an inlet and an outlet, cooperating inlet and discha

A cartridge pump assembly in which a pump housing is positioned within a tank of liquid to be pumped and a motor-driven cartridge pump unit is removably received in said pump housing, the improvement comprising: means in said pump housing defining an inlet and an outlet, cooperating inlet and discharge ports formed in said cartridge pump unit opening into said housing inlet and outlet, valve means in said pump housing at said inlet movable between open and closed positions to permit flow of liquid to be pumped to flow through said inlet to the corresponding inlet port of the cartridge pump unit, valve operator means on said housing for moving said valve means from said closed to said open position, a bale-type handle on said cartridge pump unit for lifting said cartridge pump unit out of its seated position within said housing, said handle movable between a raised lifting position and a lowered storage position, and said valve operator means being engaged by said handle only in said storage position to open said valve means.