Automatic mixture control apparatus and method
March 31, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3379421 3908967 Method and apparatus for on-line non-interactive blending using an uncoupling matrix Process of cementing wells Controlled additive metering system Method and apparatus for monitoring fluid flow Slurry producing apparatus Additive metering control system Additive material metering system with pneumatic discharge Additive material metering system with weighing means InventorsAssigneeApplicationNo. 332314 filed on 03/31/1989US Classes:700/67, Plural variables366/17, By condition sensing means366/152.1, Proportioning plural material components366/182.2, Including pump700/285Fluid mixingExaminersPrimary: Ruggiero, JosephAttorney, Agent or FirmInternational ClassesG06F 015/46G05D 011/13 AbstractAn automatic mixture control apparatus includes a micro-computer-based data acquisition and control device which responds in real time to flowmeter and densimeter signals to control water inlet and bulk cement valves so that a cement slurry is produced at the desired rate and density. The data acquisition and control device is programmed to provide means for computing desired positions for the valves and for computing corrections for the positions. A related automatic mixture control method is also disclosed.Other References
Field of SearchBy ingredient proportioningBy condition sensing means With automatic control means Including automatic control means Including means to monitor or control operation By single endless or screw conveyor WITH TEST, SIGNAL, OR INDICATOR MEANS Mixing of plural fluids of diverse characteristics or conditions Mixture condition maintaining or sensing With electrical controller Flow displacement element actuates electrical controller PROCESSES OF DISPENSING AUTOMATIC CONTROL Constant weight, volume or pressure control by output Delivery from source controlled by quantity in discharging receiver By weight, volume or pressure of a second dispensed material | |
