Pressure balanced sealing pistons for cathodes in an electrolyte chamber
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United States of America Patent
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-
Jan 10, 1989
Issued Date -
N/A
app pub date -
Dec 11, 1987
filing date -
Mar 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrolyte chamber includes a cathode movable in the chamber toward a workpart to machine same and spaced from a wall of the chamber by a transverse clearance space and further includes a sealing piston movable transversely in the chamber in opposite directions toward and away from the cathode to substantially close off or open the clearance space. The sealing piston includes one or more fluid passages extending therethrough such that electrolyte pressure exerted on the sealing piston is substantially balanced in the opposite directions of movement such that unbalanced electrolyte pressure forces do not prevent the sealing piston from closing off the transverse clearance.
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