Patent ID: 11914401
Assignee: PNEUMA SYSTEMS CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  F  A | IPC F  G

Claim 0:
1. A system for precision liquid delivery, the system comprising:
a gas reservoir having a known volume;
a tightly load-coupled pneumatic driver (a “TLCP driver”) configured to receive input power causing the TLCP driver to move gas into the gas reservoir to produce a gas drive pressure;
a valve configured to couple the gas reservoir with a fluid reservoir having an unknown volume of a liquid, the valve further configured to selectively isolate or pneumatically couple pressures in the gas reservoir and the fluid reservoir;
a gas-fluid interface that couples pressure in the fluid reservoir to pressure in a fluid path, the gas-fluid interface configured so that the fluid drive pressure driving liquid in the fluid path is substantially the same as the fluid reservoir pressure; and
a pressure sensor configured to detect pressure in the gas reservoir and/or the fluid reservoir.