Chemical dispensing system for a portable concrete plant

Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system

Reexamination Certificate

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Details

C700S265000, C700S266000, C700S275000, C700S281000, C700S283000, C366S002000, C366S006000, C366S008000, C366S016000, C366S017000

Reexamination Certificate

active

07050886

ABSTRACT:
A computer controlled pumping and measuring system is used to dispense chemicals into a concrete mix. The redundant use of positive displacement pumps and flow meters ensure that any problems with the chemical dispensing are immediately caught. The computerized control system may be operable to control exact batch configurations of concrete and aggregate in conjunction with the chemical dispensing, as well as provide precise mixture control and recording of the various components.

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patent: 2003/0127534 (2003-07-01), Firestone
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PCT/US 03/41052 PCT International Search Report May 24, 2004.

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