Patent ID: 7137355
Filing Date: 2006-11-21
Classification: A01K

Abstract:
1. A self-cleaning cat litter apparatus that separates and extracts clumped litter waste material from litter material contained therein during use, comprising: a chamber adapted to contain a quantity of litter material; said chamber being rotatable about a centrally disposed vertical axis; a rake disposed within said chamber, said rake including a plurality of tines for receiving clumped litter waste material from the litter material and for extracting the received clumped litter waste material from said chamber, said rake being rotatable about a vertical axis, said rake vertical axis being spaced apart from and parallel to said chamber vertical axis; and a drive assembly simultaneously rotating said chamber about said chamber vertical axis and rotating said rake tines through the litter material while said rake is disposed in said chamber about said rake vertical axis, such that said rake sweeps within said chamber and through the litter material while said chamber rotates, such that clumped litter waste material is directed toward said rake by rotation of said chamber to thereby separate clumped litter waste material from litter material in said chamber, collect the separated clumped litter material and extract the separated collected clumped litter waste material from said chamber.