Patent ID: 6568348
Filing Date: 2003-05-27
Classification: A01K

Abstract:
A self-cleaning litter device that extracts solid waste from a litter material contained therein during use, comprising:a substantially circular chamber bounded by a side wall; a rake, said rake comprised of a means to deflect solid waste out of the litter material and outwards toward said side wall of said circular chamber, said rake comprised of a plurality of tines, said tines extending with generally downward slopes into said chamber to deflect said solid waste upwards, and at least one of said tines is helically-shaped with a radius of curvature about equal to said tine's radial distance from said central axis of said chamber; a means to produce a rotational motion between said rake and said chamber; a means to prevent said rake from pushing said solid waste against said side wall of said chamber; and a means to remove said solid waste collected by said rake from said chamber.