| 摘要 |
A tapered pot-like hub is disclosed which includes a bottom section and a rim, the rim comprising a plurality of circumferentially spaced resilient fingers extending at a slight incline outwardly from the axis of the pot-like hub away from the bottom section, the fingers having inner surfaces facing the axis and outer surfaces facing away from the axis, and an electrically conductive resilient loop spring comprising a first end, a second end and an arcuate intermediate section between the first end and the second end, the first end extending outwardly away from the axis past beyond the outer surfaces of adjacent fingers, the arcuate intermediate section extending around the inner surfaces of the fingers to form an arc in pressure contact with the inner surface of the fingers and the second end is adjacent the axis. This hub is utilized in a drum assembly comprising a hollow cylindrical drum comprising an electrically conductive substrate and an electrically conductive shaft positioned along the axis of the drum. This assembly may be fabricated by installing the hub in one end of a drum along with an electrically conductive resilient loop spring.
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