Metering pump with diaphragm

Details Metering pump with diaphragm Metering pump with diaphragm

1985-10-15

1987-01-20

Smith, Leonard E.

Pumps

Serially formed pumping chambers

417251, 417572, F04B 1914, F01D 2300, F03B 900

Patent

active

046377840

ABSTRACT:
There is disclosed a metering pump for metering and pumping small volumes of fluid. A continuous member with annular elements carries pumping fluid through a first passageway containing a diaphragm which defines a second passageway. Provision is made for changing the pressure of the pumping fluid being carried through the passageway. This causes the diaphragm to expand into the first passageway drawing fluid to be pumped into one end of the second passageway. The pumped fluid is then carried through the second passageway by movement of the continuous member with annular elements along the first passageway and delivered out of the other end of the second passageway.

REFERENCES:
patent: 3859010 (1975-01-01), Loftquist
patent: 3924973 (1975-12-01), Loftquist

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