| 摘要 |
An eraser crumb cleaner held in hand like a writing pen for collecting eraser crumbs and the like simultaneously while erasing, consisting of an eraser holder; a suction pipe to suck and transport the crumbs from the collection points to the removable container; a baffle within the container to reduce the momentum of the eraser crumbs and to force them to settle; an inlet pipe to conveniently support the apparatus of this invention on hand and direct air to the inlet of a backwardly curved-vane centrifugal fan; an enclosure for the centrifugal fan to provide an appropriate outlet area for the sucked air; an electric motor to run the centrifugal fan; a power means; and a switching means. The suction produced by the centrifugal fan forces and transports the eraser crumbs through the suction pipe to the baffle where the crumbs are deflected, lose momentum, and are forced to settle in the removable container for final disposal.
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