Load handling apparatus with vacuum attaching means

Claim 1

IN LOAD-HANDLING APPARATUS INCLUDING VACUUM-ATTACHING MEANS, A MOTOR-DRIVEN VACUUM PRODUCER, VACUUM CONDUIT MEANS CONDUCTING THE VACUUM PRODUCER AND THE VACUUM-ATTACHING MEANS WHEREBY A VACUUM TO OPERATE SAID ATTACHING MEANS IS SUPPLIED BY SAID VACUUM PRODUCER, SAID CONDUIT MEANS INCLUDING VALVE MEANS FOR CONTROLLIING OPERATING PERIODS OF SAID VACUUM-ATTCHING MEANS, AND MEANS FOR OPERATING SAID VACUUM-ATTACHING MEANS RESPONSIVE TO A LOSS OF VACUUM IN SAID VACUUM CONDUIT MEANS, SAID MEANS COMPRISING A RESERVOIR FOR HOLDING GAS UNDER PRESSURE, AND EJECTOR OPERATED BY THE FLOW OF GAS THERETHROUGH INCLUDING AN INLET CONNECTED TO SAID RESERVOIR TO ENABLE THE SUPPLY OF GAS TO THE EJECTOR FROM SAID RESERVOIR AND A VACUUM SUPPLY CONNECTION WHEREIN A VACUUM IS PRODUCED ON OPERATION OF THE EJECTOR, AND CONDUIT MEANS CONNECTING SAID VACUUM-SUPPLYING CONNECTION WITH SAID VACUUM-ATTACHING MEANS.