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专利名称：Automatic mixture control apparatus and
method
发明人：Pitts, Alan J.,Case, Leonard Ray,Broaddus,
James Everrett
申请号：EP90303133.4申请日：19900323公开号：EP0390437A1公开日：19901003
专利附图：
摘要：Solid/liquid mixtures, such as cement, are made to a predetermined density andat a predetermined rate, by controlling the admission of liquid and solid to a conduit (2)
using valves (6,8) controlled by a data acquisition and control means (38), utilising ameasured flow rate (8) of the liquid (measured in device 28) and a measured density ofthe mixture (measured in device 34).
申请人：HALLIBURTON COMPANY
地址：P.O. Drawer 1431 Duncan Oklahoma 73536 US
国籍：US
代理机构：Wain, Christopher Paul
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