Pet litter box system which prevents the development of unpleasa

Details Pet litter box system which prevents the development of unpleasa Pet litter box system which prevents the development of unpleasa

1990-04-10

1991-07-16

Hirsch, Paul J.

Animal husbandry

Waste toilet or related device

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

119169, A01K 2900

Patent

active

050315781

ABSTRACT:
An animal litter box system which reduces odor and extends the useful life of litter by delivering and concentrating urine in an area specifically designed to prevent odor formation. The system of the present invention permits almost indefinite recycling of the substantially nonsorbent, nonclumping granular litter material used by the animal to bury its solid excreta. The combination further includes a porous filtering member exhibiting a pore size which will readily permit the granular litter material to pass therethrough, yet retain substantially all of the solid animal excreta coming in contact with the filtering member during the filtering operation. A protective member capable of substantially resisting damage when subjected to digging or clawing by animals is secured in superposed relation to and completely overlies the uppermost surface of the porous filtering member. The protective member includes means for forming an opening having a predetermined periphery in its uppermost surface when the protective member is lifted from the litter box to initiate the filtering operation. The filtering member is secured in underlying relation about the predetermined periphery of the opening formed in the protective member so that the filtering member is protected from damage due to digging or clawing by animals during the normal use cycle, yet substantially all of the nonsorbent, nonclumping granular litter material containing the solid animal excreta will pass through the opening and be filtered by the filtering member when the protective member is lifted from the litter box. The protective member further includes liquid sorbent means including an odor abatement agent to prevent or reduce the development of odor in the absorbed liquid. The liquid sorbent means absorbs liquid animal excreta so that the liquid animal excreta contained in the sorbent means can be removed from the litter box and disposed of along with the solid animal excreta retained on the filtering member when the filtering operation has been completed.

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PCT International Publication Number 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 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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