US Patent 6874545 Wine saver machine and stopper

A machine includes a body, a hollow cylinder fixedly attached to the body, a piston assembly slidable within the hollow cylinder, and a lever handle pivotally attached to the body. The hollow cylinder has a sealing end, and the sealing end is capable of engaging with and sealing to a stopper. The piston assembly includes a cross wall at a first end. The lever handle is coupled to the piston assembly so as to be capable of sliding the piston assembly in the hollow cylinder.