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

Claim 16:
17. A method of compressing a gas, the method comprising:
reciprocating a first diaphragm along a pump axis and a second diaphragm along the pump axis with a drive, at least a portion of the drive disposed directly between the first diaphragm and the second diaphragm;
compressing the gas in a first compression chamber to a first pressure with the first diaphragm;
expelling the compressed gas from the first compression chamber through a first outlet of the first compression chamber;
routing the compressed gas from the first compression chamber into a second compression chamber;
amassing the compressed gas in the second compression chamber over a plurality of cycles of the first diaphragm and compressing the compressed gas to a second pressure greater than the first pressure in the second compression chamber with a second diaphragm configured to reciprocate on the pump axis; and
expelling the compressed gas from the second compression chamber based on the second pressure exceeding a crack pressure of an outlet check valve of the second compression chamber;
wherein a pumping stroke of the first diaphragm both compresses the gas within the first compression chamber and moves previously compressed gas into the second compression chamber.