发明名称 |
Portable card-like article |
摘要 |
A portable card-like article having a force sensing assembly for use in a force monitoring system comprises a support (3) to which is pivoted a plate (1) via a pair of laterally spaced arms (2). A pair of leaf springs (4) urge the plate (1) towards a normal, rest position. A Hall effect transducer (8) and permanent magnet (7) are mounted to a base (5) of the assembly and an underside of the plate (1) respectively and sense pivotal movement on the plate (1) due to the action of a writing instrument of the upper surface of the plate. The output signals from the Hall effect transducer (8) provide an indication on the magnitude of the applied force.
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申请公布号 |
US4800260(A) |
申请公布日期 |
1989.01.24 |
申请号 |
US19870136376 |
申请日期 |
1987.12.22 |
申请人 |
DE LA RUE SYSTEMS, LIMITED |
发明人 |
SIMPSON-DAVIS, RAYMON W.;BENNETT, ALLAN |
分类号 |
B42D15/10;G01L5/00;G07C9/00;G07F7/10 |
主分类号 |
B42D15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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