초록 ▼

An internal pump assembly including a fluid tank defining a fluid compartment, and first and second vessels positioned in the tank. The second vessel has a second vessel port through which fluid can flow relative to the fluid compartment. A bellows pump assembly positioned at least partially in the

An internal pump assembly including a fluid tank defining a fluid compartment, and first and second vessels positioned in the tank. The second vessel has a second vessel port through which fluid can flow relative to the fluid compartment. A bellows pump assembly positioned at least partially in the first vessel pumps fluid from the fluid compartment through the second vessel port into the second vessel from which the fluid can be subsequently removed. The fluid in the compartment acts on the bellows surface to thereby bias the pump assembly towards one of a pumping or a non-pumping position.

대표청구항 ▼

An internal pump assembly comprising: a fluid tank defining a fluid compartment; a first vessel positioned in said fluid tank; a second vessel positioned in said fluid tank, said second vessel including a second vessel port through which fluid can flow relative to said fluid compartment; and bellows

An internal pump assembly comprising: a fluid tank defining a fluid compartment; a first vessel positioned in said fluid tank; a second vessel positioned in said fluid tank, said second vessel including a second vessel port through which fluid can flow relative to said fluid compartment; and bellows pump means positioned at least partially in said first vessel for pumping fluid from said fluid compartment through said second vessel port into said second vessel from which the fluid can be subsequently removed; wherein said bellows pump means includes a bellows pump movable between a first position wherein fluid is being pumped to said second vessel and a different second position; wherein said bellows pump includes a bellows surface on which fluid pressure of said fluid compartment acts to thereby bias said bellows pump towards the second position; wherein said bellows surface has an inwardly-disposed inside surface and an opposite outside surface; and wherein said first vessel has a passageway through which fluid of said fluid compartment can flow to thereby act directly on said inside surface and bias said bellows pump towards one of the first and second positions.