Patent ID: 6244929
Filing Date: 2001-06-12
Classification: B23Q,B24B

Abstract:
A processing system comprising:a slurry distribution system;a polisher;a water source;a drain;a first filter;a second filter;input valves for respectively connecting in first and second modes:said slurry distribution system to said first filter and disconnecting said second filter; andsaid slurry distribution system to said second filter and disconnecting said first filter;output valves for respectively connecting in said first and second modes:said first filter to said polisher and disconnecting said second filter;said second filter to said polisher and disconnecting said first filter; andsaid output valves precharge said first filter in said second mode by connecting said slurry distribution system thereto in said second mode and precharge said second filter in said first mode by connecting said slurry distribution system thereto in said first mode;drain valves to connect said drain to said first filter during said second mode and to said second filter during said first mode; anda control system for changing said valves between said first and second modes.