| 摘要 |
A self cleaning cat litter box has the ability to automatically filter and separate clumped soiled litter and fecal matter from clean litter. The apparatus includes a rotatable drum, a spiral filter within the drum, and a stationary back plate.. The drum has front and back walls, and the front wall has a front opening which permits access and egress by a domestic pet. The back wall has a first opening for both the removal of soiled litter and the addition of clean litter. The spiral filter is slotted, and is mounted on the inner surface of the drum. The stationary back plate is parallel to the plane of the back wall and has a second opening which permits the passage of soiled litter away from the drum, and a third opening to permit the passage of clean litter into the drum. The drum is rotated by a suitable drive, which can be electively actuated by a switch. The filter is configured to act as a scoop, and when the drum is at its re st position the filter is at least 10.degree. from the bottommost point on the drum. When the second opening is aligned with the first opening, passage of soiled litter from the filter into disposable collection means occurs. When the third opening is aligned with the first opening, passage clean litter into the drum from a reservoir mounted on the back of theback plate will occur. A domestic pet includes a cat, rabbit, ferret, or skunk.</ SDOAB>
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