Filtering and disposal system for pet litter

Details Filtering and disposal system for pet litter Filtering and disposal system for pet litter

1990-04-10

1991-11-05

Weiss, John G.

Animal husbandry

Waste toilet or related device

Walled receptacle; e.g., litter box, etc., containing...

119169, A01K 2900

Patent

active

050623923

ABSTRACT:
A combined litter filtering and disposal system. A particularly preferred system comprises a highly porous litter filtering member underlying a protective member which prevents the pet from coming in contact with and damaging the filtering member in use. The protective member includes a centrally located slit, for allowing granular material, such as litter, to readily pass through onto the underlying filtering member when the system is lifted from the litter box. By employing two discrete members oriented as described, the functions of filtering and resistance to cat's claws are decoupled from one another, i.e., there is no longer a need to compromise between strength and filtering efficiency. Each member of the present bicomponent system can be optimally designed for its intended function, i.e., the uppermost protective member which underlies the litter is designed to provide reliable resistance to ripping by or entanglement of the cat's claws, while the lowermost highly porous filtering member is designed to maximize filtering efficiency by providing more rapid separation of fecal excrement from the litter when the system is lifted from the litter pan.

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PCT International Publication No. WO 88/00434, International Publication Date 1/28/88, P. Yananton--Non-Absorbent Litter for Use with Absorbent Pad.
Co-pending commonly assigned U.S. Patent Application of J. L. Hammons et al., Ser. No. 507,696 filed Apr. 10, 1990 (No copy supplied)--Pet Litter Box System Which Prevents the Development of Unpleasant Odors.
Co-pending commonly assigned U.S. Patent Application of W. R. Ouellette et al., Ser. No. 507,695 filed Apr. 10, 1990 (No copy supplied)--Animal Waste Collection System Comprising Nonsorbent, Nonclumping Litter, Liquid Sorbent Means & Filter.

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