Patent ID: 6837253
Filing Date: 2005-01-04
Classification: B08B,F16K,H01L,Y10S

Abstract:
1. A liquid processing tank, including: a bottom wall assembly, and means for supporting and immobilizing said bottom wall assembly; a side wall assembly operatively associated with said bottom wall assembly; sealing means extending between a lower edge portion of said side wall assembly and said bottom wall assembly, said sealing means releasably joining together said side wall assembly and said bottom wall assembly to define a liquid-containing enclosure; actuator means for moving said side wall assembly from a first, retracted disposition in which said sealing means is joined to define said liquid-containing enclosure, to a second, extended disposition in which said lower edge portion is separated from said bottom wall assembly to define a quick discharge outlet at the lower periphery of said enclosure, means in said tank for supporting a plurality of wafers above said bottom wall assembly with said wafers adapted to be positioned below the upper edge portion of said side wall assembly when said side wall assembly is in said first retracted position, said discharge outlet extending substantially completely around the periphery of said bottom wall assembly, the spacing between said wafer supporting means and said bottom wall assembly being substantially the same irrespective of the disposition of said side wall assembly.