[특허]Self-cleaning pet litter box assembly with reciprocating bars

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Self-cleaning pet litter box assembly with reciprocating bars

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A01K-029/00
미국특허분류(USC)	119/166
출원번호	UP-0828413 (2007-07-26)
등록번호	US-7669555 (2010-04-21)
발명자 / 주소	Emery, Richard H.
대리인 / 주소	Wood, Herron & Evans, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 31

초록
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A self-cleaning pet litter box has a conveyor to incrementally transport clumped litter material and solid pet waste to a waste receptacle. The conveyor has one end configured to extend into a pet litter container of the self-cleaning litter box and an opposite exit end. The conveyor is configured for reciprocating movement to lift the clumped litter material and solid pet waste from below, transport it some distance along the conveyor, place the material down again, return to its original position, and repeat the motion again to incrementally move the m...

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Having described the invention, what is claimed is: 1. A self-cleaning pet litter box assembly configured to separate and remove clumped litter and solid pet waste from clean litter material, comprising: a base; an open-top pet litter container configured to hold litter therein and being mounted for substantially horizontal rotation relative to said base; a conveyor having one end configured to extend into the pet litter container and an opposite exit end, said conveyor comprising a first moving conveyor portion defined by a first plurality of horizontally spaced members and a second moving conveyor portion defined by a second plurality of horizontally spaced members, said first and second conveyor portions moving with reciprocating movement in an out-of-phase relationship and cooperating with each other to incrementally transport clumped litter and solid pet waste away from the litter within the pet litter container in a single direction toward the exit end thereof; a first transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the exit end; and a second transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the one end; each of the first and second transverse crankshafts having a fixed axis of rotation, and each of the first and second transverse crankshafts operating so as to rotate in only a single direction to incrementally transport the clumped litter and solid pet waste toward the exit end of the conveyor. 2. The self-cleaning pet litter box assembly of claim 1 wherein each of said first and second moving conveyor portions has a plurality of detents disposed along at least a partial length thereof. 3. The self-cleaning pet litter box assembly of claim 1 further comprising a waste receptacle positioned adjacent the exit end of said conveyor to receive the clumped litter and solid pet waste incrementally transported toward the exit end by said conveyor. 4. The self-cleaning pet litter box assembly of claim 1 further comprising a separating member positioned to contact the litter within the pet litter container and being configured to separate clumped litter and solid pet waste from the litter within the pet litter container and direct the clumped litter and solid pet waste toward said conveyor. 5. The self-cleaning pet litter box assembly of claim 4 wherein said separating member includes a plurality of openings configured to retain the clumped litter and solid pet waste and permit unclumped material to pass through said openings. 6. The self-cleaning pet litter box assembly of claim 1 further comprising a drive mechanism operatively connected to said pet litter container to rotate said container. 7. The self-cleaning pet litter box assembly of claim 1 further comprising a drive mechanism operatively connected to said conveyor to drive said conveyor. 8. The self-cleaning pet litter box assembly of claim 1 further comprising a cover configured to fit over said open-top pet litter container and having an opening to expose litter contained within said container and provide access to the litter for use by the pet. 9. A self-cleaning pet litter box assembly configured to separate and remove clumped litter and solid pet waste from clean litter material, comprising: a base; an open-top pet litter container configured to hold litter therein and being mounted for substantially horizontal rotation relative to said base; a drive mechanism operatively connected to said pet litter container to rotate said container; a conveyor having one end configured to extend into the pet litter container and an opposite exit end, said conveyor comprising a first moving conveyor portion defined by a first plurality of horizontally spaced members and a second moving conveyor portion defined by a second plurality of horizontally spaced members, said first and second conveyor portions moving with reciprocating movement in an out-of-phase relationship and cooperating with each other to incrementally transport clumped litter and solid pet waste away from the litter within the pet litter container in a single direction toward the exit end thereof; a first transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the exit end; and a second transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the one end; each of the first and second transverse crankshafts having a fixed axis of rotation, and each of the first and second transverse crankshafts operating so as to rotate in only a single direction to incrementally transport the clumped litter and solid pet waste toward the exit end of the conveyor; a separating member positioned to contact the litter within the pet litter container and being configured to separate clumped litter and solid pet waste from the litter within the pet litter container and direct the clumped litter and solid pet waste toward said conveyor; and a waste receptacle positioned adjacent the exit end of said conveyor to receive the clumped litter and solid pet waste incrementally transported by said conveyor. 10. The self-cleaning pet litter box assembly of claim 9 wherein each of said first and second moving conveyor portions has a plurality of detents disposed along at least a partial length thereof. 11. The self-cleaning pet litter box assembly of claim 9 wherein said separating member includes a plurality of openings configured to retain the clumped litter and solid pet waste and permit unclumped material to pass through said openings. 12. The self-cleaning pet litter box assembly of claim 9 further comprising a drive mechanism operatively connected to said conveyor to drive said conveyor. 13. The self-cleaning pet litter box assembly of claim 9 further comprising a cover configured to fit over said open-top pet litter container and having an opening to expose litter contained within said container and provide access to the litter for use by the pet. 14. A method of removing clumped material and solid pet waste from clean litter material in a pet litter box, the method comprising: obtaining a pet litter box assembly having a horizontally rotating pet litter container and a conveyor having one end configured to extend into the pet litter container and an opposite exit end, the conveyor comprising a first moving conveyor portion defined by a first plurality of horizontally spaced members and a second moving conveyor portion defined by a second plurality of horizontally spaced members, said first and second conveyor portions moving with reciprocating movement and cooperating with each other, a first transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the exit end, and a second transverse crankshaft operatively coupled to the first moving conveyor portion and the second moving conveyor portion proximate the one end, each of the first and second transverse crankshafts having a fixed axis of rotation, and each of the first and second transverse crankshafts operating so as to rotate in only a single direction to incrementally transport the clumped litter and solid pet waste toward the exit end of the conveyor, the method further comprising the steps of: rotating the pet litter container to advance the clumped material and solid pet waste toward the conveyor; and moving the first and second moving conveyor portions by reciprocating movement in an out-of-phase relationship to incrementally transport the clumped litter and solid pet waste away from the litter within the pet litter container in a single direction toward the exit end thereof. 15. The method of claim 14 further comprising the steps of: positioning a waste receptacle proximate the exit end of the conveyor; and receiving the separated-out clumped litter and solid pet waste in the waste receptacle. 16. The method of claim 14 wherein the pet litter box assembly further has a separating member positioned to contact the litter within the pet litter container, the method further comprising the steps of: separating the clumped material and solid pet waste from the clean litter material by passing the clean litter material through the separating member; and directing the clumped material and solid pet waste toward the conveyor with the separating member. 17. The method of claim 14 wherein each of the first and second moving conveyor portions has a plurality of detents disposed along at least a partial length thereof.

이 특허에 인용된 특허 (31)

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Self-cleaning pet litter box assembly with reciprocating bars

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Self-cleaning pet litter box assembly with reciprocating bars

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