Animal husbandry – Waste toilet or related device – Walled receptacle; e.g. – litter box – etc. – containing...
Reexamination Certificate
2006-04-04
2009-02-10
Nguyen, T. (Department: 3644)
Animal husbandry
Waste toilet or related device
Walled receptacle; e.g., litter box, etc., containing...
C119S165000, C119S161000
Reexamination Certificate
active
07487742
ABSTRACT:
An apparatus and method for separating animal waste from litter are provided. In one form, the apparatus includes a drum that contains litter and a helical rake that is rotatable in the drum. The rake can rotate relative to the drum to reduce power requirements for the rotary rake drive. Preferably, the drum is also rotatable by turning of the rake in the drum, but only for a limited, fixed angular distance which also reduces peak power requirements for the rotary drive motor for the rake.
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Fitch Even Tabin & Flannery
Nguyen T.
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