Patent ID: 8096329
Filing Date: 2012-01-17
Classification: B65B

Abstract:
1. A hand-held vacuum device for evacuating a container, the device comprising: a housing to hold an electrical motor operable to drive a piston pump and a piston valve, the piston pump and the piston valve being configured to draw a substantially continuous vacuum during each complete cycle of the piston pump, wherein the piston pump comprises a first cylinder having a first piston and a first check-valve and a second cylinder having a second piston and a second check-valve, a first piston shaft eccentrically connected to a worm gear wheel and the first piston and a second piston shaft eccentrically connected to the worm gear wheel and the second piston, wherein the electrical motor is operatively connected to a worm gear that drives the worm gear wheel to reciprocate the first piston and the second piston within the first cylinder and the second cylinder to draw the substantially continuous vacuum; an expansion chamber releasably connected to and in fluid communication with the housing and the piston pump, the expansion chamber having a deflector to alter a fluid pathway of a fluid before entering an interior volume of the expansion chamber; and a vacuum interface having a vacuum connecter in fluid communication with the expansion chamber and configured to releasably couple to a valve disposed on a container to form an airtight seal therewith, wherein the expansion chamber separates air and liquid from the fluid drawn into the interior volume of the expansion chamber and collects the liquid therein.