Patent ID: 11964277
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC A  B  C  G

Claim 8:
9. A microfluidic system, comprising:
a metered volume microfluidic device comprising fluid flow microfluidics, the fluid flow microfluidics including:
an inflow channel,
a metered volume chamber positioned to receive working fluid from the inflow channel,
a metered volume outflow channel configured to receive and direct a metered volume of the working fluid to a second chamber when the working fluid is discharged from the metered volume chamber, and
a capillary check valve configured to allow the excess working fluid to exit the metered volume chamber when the metered volume chamber is being filled via the inflow channel and to prevent the excess working fluid from being reintroduced into the metered volume chamber after passing through the capillary check valve; and

an overflow chamber to receive the excess working fluid from the capillary check valve.