| 摘要 |
A lever control assembly including a housing adapted for attachment to a support structure, the housing including a slot having oppositely disposed tracks defining a length of the slot and an edge between each end of the tracks defining a width of the slot. An actuator extends through the slot and is movably supported by the housing for movement along the slot. A slot closure shield is mounted on the actuator and has an upper surface, the slot closure shield being biased against the tracks and edges of the slot to engage and conform to the tracks and edges for perfecting a slidable seal therewith to close the slot while moving with the actuator along the slot.
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