Fluid transfer hand pump

摘要

The fluid transfer hand pump has a first chamber separated from a second chamber by a barrier with air passages. Air is drawn into the first chamber upon elevation of a knobbed rod. Air is forced into the second chamber by plunging the rod with a cupped seal into the first chamber. The second chamber is sealably joined to a fluid containing vessel to pressurize the vessel, which in turn forces fluid out of the pump and into a desired receptacle.

主权项

1. What is claimed is a fluid transfer hand pump comprising:
a tube having a closed top end spaced apart from an open bottom end; an outward flange disposed on the open bottom end; a first chamber disposed within the tube proximal the closed top end; a second chamber disposed within the tube proximal the open bottom end; a barrier dividing the first chamber from the second chamber, the barrier having a plurality of air passages; a rubberized grommet disposed on the outward flange; at least one vent disposed in the closed top end; a first groove disposed within the first chamber adjacent the closed top end; an air filter disposed within the first chamber adjacent the first groove; wherein the vent and the air filter are in operational communication with the first chamber; a guide disposed within the first chamber adjacent the air filter; a second groove disposed within the first chamber between the air filter and the guide; a third groove disposed within the first chamber adjacent the guide and distal the closed top end; a plurality of snap rings, one of each snap ring of the plurality of snaps rings disposed within each of the first groove, the second groove, the third groove wherein the air filter and the guide are configured to be removably retained; a knobbed rod slidably disposed through the closed top end, the air filter, the guide, the knobbed rod having a distal end disposed without the closed top end, a proximal end disposed within the first chamber; a first disc disposed on the proximal end; a first cupped seal disposed adjacent the disc, the first cupped seal facing the open bottom end, the first cupped seal slidable within the first chamber; a first retainer selectively retaining the first cupped seal and the first disc to the proximal end; a shoulder disposed on the barrier within the first chamber; a second disc disposed atop the shoulder; a second cupped seal disposed between the second disc and the shoulder, the second cupped seal facing the barrier; a second retainer selectively retaining the second disc and the second cupped seal to the shoulder; a sleeve disposed continuously from the barrier to the open bottom end; a collar disposed between the sleeve and the tube; a hollow fitting disposed within the collar; a flexible first tubing fitted to the hollow fitting external the tube; a threaded coupling having an inward flange slidably engaging the tube and the outward flange; and a flexible second tubing disposed on the sleeve; wherein the threaded coupling is configured to engage a fluid container; wherein the rubberized grommet is configured to seal the outward flange to the fluid container; wherein the second tubing is configured to extend within the fluid container; wherein the second tubing is in operational communication with the first tubing; wherein forcing the knobbed rod downwardly within the first chamber is configured to capture air within the first chamber with the first cupped seal and pass the air beyond the second cupped seal, through the plurality of air passages, and into the second chamber; wherein the second cupped seal substantially prevents air from reentering the first chamber from the second chamber; wherein the air within the second chamber is configured to create an approximate two psi of pressurized air within the container; and wherein the pressurized air within the container forces a fluid in the container through the second tubing, the sleeve, and out of the first tubing.