Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1992-10-07
1994-07-19
Cusick, Ernest G.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
141 39, 141 48, 141 92, 141 63, B67C 306
Patent
active
053299639
ABSTRACT:
A can (1) has a primary chamber and a secondary chamber in communication through a restricted orifice and its exterior maintained at atmospheric pressure. The can (1) is filled with beer through a filling block (24) from a bowl (8). Prior to filling the can (1) is pressurized through the block (24) with nitrogen gas to greater than atmospheric pressure and subsequently evacuated to atmospheric pressure. Such pressurization and evacuation is repeated sequentially to dilute the atmospheric oxygen content within the primary and secondary chambers. A gas exchange conduit (40) extends between the bowl headspace (12) and the can (1). Conduit (40) has a gas control valve (55) closeable by movement of lever (60). A beer flow valve (37/46) controls flow of beer (9) from the bowl. During nitrogen pressurization of the can (1) the lever (60) is adjusted to maintain valves (55) and (37/46) closed and insure that high pressure gas in the can (1) cannot flow through conduit (40) into the bowl (8).
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Jones Michael E.
Kenward Andrew J.
Cusick Ernest G.
Guinness Brewing Worldwide Limited
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