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专利名称：COIN TESTING APPARATUS发明人：WAITE, Timothy, Peter申请号：EP90912110.0申请日：19900809公开号：EP04041A1公开日：19920610
摘要： Apparatus for checking coins in which two magnetic fields oscillated interactwith a workpiece, these interactions being controlled to verify the acceptability and / orthe presence of a room. Fields are associated with respective inductive coils that have acommon core disposed so that neither a greater or a smaller proportion of the field of acoil interacts with the other coil. In a preferred embodiment, one of the two coils
encircles the other, providing a work sensing device with two very compact fields. In someversions, a coil surrounds the other but they have respective core elements.
申请人：MARS INCORPORATED
地址：6885 Elm Street McLean Virginia 22101-3883 US
国籍：US
代理机构：Wright, Peter David John, et al
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