Patent ID: 11873802
Assignee: GRACO MINNESOTA INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 6:
7. The pump of claim 1, wherein:
a charge chamber is disposed within the housing between the first diaphragm and the second diaphragm, wherein the charge chamber is configured to be filled with a pressurized fluid configured to displace the first diaphragm and the second diaphragm through respective pumping strokes; and
the first diaphragm comprises:
a first rigid portion forming an inner diameter portion of the first diaphragm; and
a first membrane extending radially outward from the first rigid portion and secured between the first cover and the first end of the housing at a first static interface, the first membrane having an outer side and an inner side, the outer side at least partially defining the first compression chamber;
wherein a portion of the first membrane radially between the rigid portion and the static interface is configured to flex axially into the first compression chamber.