| 摘要 |
Disclosed is a vibrator assembly having a cylindrical counterweight with an unbalanced core. A conductive shield the length of the unbalanced rotatable counterweight is positioned about the length of the unbalanced rotatable counterweight, the conductive shield having a shield axis along the rotatable axis. The shield is a cylinder, a portion of a cylinder, or another form of a hollow structure. The shield can be, for example, welded, tightly fitted, or glued to the rotary vibrator assembly. In another embodiment, the conductive shield and unbalanced rotatable counterweight are a single component. In another embodiment, the assembly can include an end cap at a distal end of the shield. In still another embodiment, a circuit element can be electrically connected to the conductive shield.
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