发明名称 |
Multiple coil electromagnetic pickup |
摘要 |
A multiple coil electromagnetic pickup converts into signals the flux variations produced by the passing of the teeth of a sound wheel. The pickup comprises at least two assemblies each consisting of at least one coil, one pole piece and one straight magnet all axially aligned, the assemblies being arranged in parallel to each other and magnetically insulated from each other by a screen. Measurement of rotational speed produces two output signals.
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申请公布号 |
US4276489(A) |
申请公布日期 |
1981.06.30 |
申请号 |
US19790058489 |
申请日期 |
1979.07.18 |
申请人 |
SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION |
发明人 |
DRON, SYLVAIN M.;EVRARD, GERARD M. G. |
分类号 |
G01P3/488;(IPC1-7):H02K21/38 |
主分类号 |
G01P3/488 |
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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