Pneumatic system for controlling aluminum bath crust breaker
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United States of America Patent
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Dec 16, 2014
Grant Date -
Dec 13, 2012
app pub date -
Jun 13, 2011
filing date -
Jun 13, 2011
priority date (Note) -
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Abstract
A pneumatic system controlling a bath crust breaker includes a cylinder defining a piston chamber. A piston is slideably displaced within the cylinder by pressurized fluid directed to either a piston chamber first portion with respect to the piston or a piston chamber second portion oppositely positioned about the piston. A pneumatic valve system includes a first control valve aligned between first control valve first and second positions, the first control valve first position aligned with the first portion, and in the first control valve second position is aligned with the second portion. A second control valve is aligned between second control valve first and second positions. An orifice between a pressure source and first control valve is sized to control fluid flow rate so a pressure reached in either the first or second portion during a crust breaking cycle is less than a pressure source maximum pressure.
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