Combination vacuum/pressure pump and valve stopper for food or d

Details Combination vacuum/pressure pump and valve stopper for food or d Combination vacuum/pressure pump and valve stopper for food or d

1990-04-19

1991-07-16

Marcus, Stephen

Bottles and jars

Closures

Combined or convertible

215260, 215311, 141 65, 417547, 417553, 417554, B65D 5116

Patent

active

050317857

ABSTRACT:
A combination pressure and vacuum pump for food or drink containers including a pump housing having a pump cylinder therein, a pump head adapted for sealing engagement with a valve stopper on a food or drink container, and a piston in sliding airtight engagement with the pump cylinder; the pump cylinder, pump head and piston defining a pump chamber. A handle is provided for moving the piston and the pump cylinder relative to one another to pump a gas into or out of the food or drink container. The pump chamber is connected to the valve stopper via a first opening when the pump head is sealed to the valve stopper and to the atmosphere via a second opening through a combination pressure and vacuum valve, the combination valve being switchable from a vacuum position to a pressure position.
A combination pressure and vacuum valve stopper is also shown which includes a valve element reversible between a pressure position and a vacuum position to convert the stopper between pressure and vacuum use.

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