Concrete mix declassifier apparatus and method

Claim 1

THAT METHOD OF FLUSHING THE DRUM OF A TRANSIT MIXER OF CONCRETE MIX AND OF RECOVERING SAND AND AGGREGATE CONSTITUENTS OF THE MIX FOR REUSE WHICH COMPRISES RECIRCULATING A CAPTIVE QUANTITY OF WATER BETWEEN A DECLASSIFYING CHAMBER, A CLARIFIER CHAMBER AND AN AUXILIARY CHAMBER LOCATED IN A CLEAN WATER RETURN PORTION OF SAID CIRCUIT AND NORMALLY CONTAINING A SUPPLY OF CLEAN WATER FOR USE IN FLUSHING MIX INTO SAID DECLASSIFYING CHAMBER, UTILIZING WATER FROM SAID AUXILIARY CHAMBER TO FACILITATE CLEANING AND FLUSHING SAID MIXER DRUM OF MIX, DISCHARGING SAID FLUSHING WATER AND MIX FROM THE DRUM INTO SAID DECLASSIFYING CHAMBER, SEPARATING CEMENT FROM SAID MIX IN SAID DECLASSIFYING CHAMBER BY PLACING THE CEMENT IN WATER SUSPENSION, CIRCULATING CEMENT SUSPENDED IN WATER FROM SAID DECLASSIFYING CHAMBER TO SAID CLARIFIER CHAMBER, AND SKIMMING AND RETURNING RELATIVELY CLEAN WATER FROM SAID CLARIFIER CHAMBER TO SAID AUXILIARY CHAMBER AND TO SAID DECLASSIFYING CHAMBER TO REPLACE WATER AND SUSPENDED CEMENT WITHDRAWN FROM SAID DECLASSIFYING CHAMBER AND TO REPLACE CLEAN WATER WITHDRAWN FROM SAID AUXILIARY CHAMBER FOR USE TO FLUSH SAID TRANSIT MIXER DRUM.