US 11,718,427 B1
Volumetric isobaric filling system
Joshua Richard Bradshaw, Maple Ridge (CA)
Filed by Vital Manufacturing Inc., Port Coquitlam (CA)
Filed on Jun. 17, 2022, as Appl. No. 17/842,799.
Claims priority of provisional application 63/337,127, filed on May 1, 2022.
Int. Cl. B65B 3/32 (2006.01); B65B 3/12 (2006.01); B65B 37/06 (2006.01); B65B 31/04 (2006.01)
CPC B65B 3/32 (2013.01) [B65B 3/12 (2013.01); B65B 31/04 (2013.01); B65B 37/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A fluid fill piston pump device comprising:
a piston chamber comprising an inner surface;
an oscillating piston having an outer surface forming a sliding seal to the inner surface of the piston chamber;
the oscillating piston separating the piston chamber into a gas chamber and a fluid chamber;
an external source of fill fluid connected via a fill fluid conduit to the fluid chamber;
a releasable sealing surface between the fluid chamber and a fluid container forming a fluid seal to the fluid container;
a container fill conduit connecting the fluid chamber and the fluid container;
a fluid fill valve configured to close the container fill conduit as the oscillating piston is increasing the volume of the fluid chamber;
a gas conduit connecting the gas chamber and the fluid container;
a gas valve selectively configured to open the gas conduit as the oscillating piston is increasing the volume of the gas chamber;
a source of inert gas;
a purge gas conduit connecting the source of inert gas and the gas chamber; and
a purge gas valve selectively configured to close the purge gas conduit.