ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,739, issued on June 17, was assigned to MIXTRON S.R.L. (Reggio Emilia, Italy).
"Piston pump" was invented by Stefano Brevini (Reggio Emilia, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piston pump is described for pumping a liquid including a head in which at least a cylinder is disposed, a piston slidably inserted in the cylinder, a first sealing annular gasket which circumferentially sealingly contacts the piston, a second sealing annular gasket which circumferentially sealingly contacts the piston, and an annular body which circumferentially encloses the piston and is at least partially accommodated in a housing seat disposed in the he...