Abrading – Abrading process – Abradant supplying
Reexamination Certificate
2005-04-19
2005-04-19
Wilson, Lee D. (Department: 3723)
Abrading
Abrading process
Abradant supplying
C451S064000, C451S444000, C451S255000
Reexamination Certificate
active
06881132
ABSTRACT:
A grinding water tank unit which enables reuse of grinding water that has been used for processing an eyeglass lens, includes: a tank in which the grinding water is stored; a filter, disposed in the tank, for filtering the grinding water to be separate from processing debris, the filter having a sealed hollow portion; a first water suction pump; and a first water suction passage which connects the hollow portion to the first pump, and through which the grinding water filtered by the filter is sucked by suction of the first pump.
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Nidek Co. Ltd.
Sughrue & Mion, PLLC
Wilson Lee D.
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