Flaccid, Liner-type Separator Patents (Class 119/167)
  • Patent number: 11844327
    Abstract: A litter box sifting assembly for sifting cat feces and clumps from cat litter includes a plurality of mesh panels that is stacked upon each other. The plurality of mesh panels are positionable on a bottom of a litter box thereby facilitating cat litter to be poured over the plurality of mesh panels. Each of the mesh panels has a plurality of grip points each integrated into the mesh panels and each of the grip points on a topmost one of the plurality of mesh panels can be gripped for lifting the topmost mesh panel upwardly. Furthermore, each of the mesh panels is comprised of a mesh material to sift cat feces and clumps from the cat litter when the mesh panels are lifted upwardly through the cat litter. In this way the cat feces and clumps can be removed from the litter box in a single motion.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: December 19, 2023
    Inventor: Ryan Kaminski
  • Patent number: 11278143
    Abstract: An absorbent pad holder and containment system includes a frame that can be adjustable in length on all sides to accommodate a varying range of absorbent pad dimensions. The frame design allows the absorbent area of the pad to remain flat while the ramped perimeter design of the frame and the corner attachment system holds the outer edge of the absorbent pad into an upward position. This creates a containment barrier for liquid that would normally flow over the edge of the pad and onto the floor surface. The perimeter design of the liner keeps the pad centered and provides flow of all liquid landing on the pad within the absorbent area of the pad.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: March 22, 2022
    Assignee: SAK GROUP LLC
    Inventor: Steven King
  • Patent number: 11096371
    Abstract: The animal litter sifter comprising, a sifter receptacle having an internal chamber with an opening, and having a top edge, a sifter frame sized to rest on the top edge of the sifter receptacle, wherein the sifter receptacle having an opening substantially aligned with the sifter receptacle opening, and a sifter basket having a plurality of side walls converging towards a bottom extending into the sifter receptacle and secured to the sifter frame, wherein at least one sidewall having a impermeable and the remaining sidewalls having a plurality of passages therethrough.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: August 24, 2021
    Inventor: Amy Leah Wees
  • Patent number: 10206370
    Abstract: A disposable liner assembly to be placed in a pan for the successive sifting of litter and removal of animal waste, each sheet is arranged above and below one another such that the sifting apertures in the sheet are above and below the solid portions of a sheet below and above it to form an apertures closure. Some embodiments are provided with positioning apertures in each sheet make it easy to properly offset the thin flexible sheets relative to one another. The present invention also includes a shielded liner retainer to be removably placed over the pan to cover and clamp the liners in a fix position.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: February 19, 2019
    Inventor: Paul Huang
  • Patent number: 10154647
    Abstract: An animal toilet has a lengthwise direction, a horizontal direction and an up-down direction that are orthogonal to each other. The animal toilet is provided with an upper container that is provided with a plurality of holes through which urine passes below, a lower container that is positioned below the upper container and has formed an insert hole on a front face along the lengthwise direction, a tray that is housed from the insert hole into the lower container in a manner being allowed to be pulled out forward, and an absorbent sheet that is placed on a bottom face of the tray and receives and absorbs the urine that falls through the holes of the upper container.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 18, 2018
    Assignee: Unicharm Corporation
    Inventors: Chiyo Takagi, Shinya Kaneko
  • Patent number: 10117960
    Abstract: An air treating apparatus for a pet sanitary station, preferably an open, non-enclosed disposable cat litter box, and methods of liquid dosing and mounting said apparatus to an upper wall member integral or attached to the top of a vertical wall of the cat litter box. The apparatus comprises a moisture resistant, preferably paperboard blank folded approximately in-half forming a matchbook like folded apparatus having a top cover, bottom cover, opposing open sides, a convertible open and closing means, absorbent material attached to the bottom cover inside surface, three embodiments for liquid dosing the absorbent material whose fragrance or aroma permeates out said apparatus to treat the air above the cat litter and four embodiments for mounting said apparatus to the upper wall member. The invention includes methods to introduce the pet to a new fragrance, extend the useful life of used cat litter, mount, liquid dose the absorbent material, and open and close the apparatus.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: November 6, 2018
    Inventor: Wallace Noonan
  • Publication number: 20130327278
    Abstract: The present technology provides a litter box debris trap. The litter box debris trap includes a tray and a mat. The tray has an outer barrier surrounding the outside of the tray. The mat has a plurality of film layers, including a bottom film layer and at least one removable (or upper) film layer. The bottom film layer and each of the at least one removable film layers have a tacky top surface. The mat is attached to the tray such that the outer barrier of the tray surrounds the mat. Each of the removable film layers of the mat can be peeled away from the mat to expose the tacky top surface of the film layer beneath the peeled away film layer.
    Type: Application
    Filed: November 13, 2012
    Publication date: December 12, 2013
    Inventor: Matthew Reichert
  • Patent number: 8387568
    Abstract: Described is a litter box liner having handle ties and a form-fitted bottom. The bottom may be square or rectangular-shaped and may be sized to fit into a particular size litter box. The bottom may include the feature that there are no foldovers contained therewithin. At least a bottom portion of the litter box liner may be reinforced to resist tears. Such a reinforcement layer may include a woven polypropylene fabric layer or an extruded polypropylene film. The litter box liner may be, at least in part, formed of high density polyethylene (HDPE), thereby providing an additional means for tear resistance in the litter box liner.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 5, 2013
    Assignee: The Clorox Company
    Inventor: Alan F. Savicki
  • Patent number: 8360006
    Abstract: A first embodiment of this invention is a cat litter bag composed of a thin plastic bag having a scratch resistant surface on the upper surface to avoid being damaged when used by cats. The scratch resistant material also serves to absorb cat urine to minimize odor during use. By a second embodiment the cat litter bag is shown filled with clean litter for convenience and travel.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: January 29, 2013
    Inventors: John S. Lechaton, Marie Lechaton
  • Publication number: 20130019810
    Abstract: The invention provides an apparatus and method for maintaining pet waste in a fully-encapsulated environment whereby waste may be removed and litter may be added/replaced in a substantially sealed, dust-free, and clean manner. In one aspect, the pet waste management system comprises a sealed means by which litter may added and/or removed and/or exchange with fresh litter without the substantial release of contaminated dust and materials from the litter system. The invention also provides a vessel or container for receiving spent litter and/or for housing fresh litter where said vessel or container comprises a connection means for sealably connecting the vessel or container to an enclosed pet management system so that litter may be added and/or exchanged therewith. Further, the invention provides a continuous bagging dispenser fitted to a pet management system which allows for continuous removal of pet waste from the pet management system.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Inventor: Christoper Romano
  • Publication number: 20120291712
    Abstract: The disclosure relates to containers and other shaped articles that have a relatively thick substrate layer and one or more relatively thin liner sheets peelably adhered thereto. Animal litter can be placed atop the liner sheets, preferably in a concave portion to contain the litter. The liner sheets have perforations extending therethrough that permit the passage of non-soiled litter, but do not permit the passage of at least one of animal feces and soiled animal litter, such as clumps of litter and urine. After an animal has deposited waste on or in the litter, the liner sheet can he peeled from the container and waste unable to pass through the perforations can be collected.
    Type: Application
    Filed: August 3, 2012
    Publication date: November 22, 2012
    Applicant: Converter Manufacturing, Inc.
    Inventor: Millard F. WALLACE
  • Publication number: 20120118241
    Abstract: The present invention for a pet waste management system for use by domestic animals includes a shallow container; having a bottom and four sidewalls, for receiving and collecting domestic animal waste product, excrement, and urine, a receptacle combined with the container, for holding and dispensing plastic disposal bags for the animal excrement, a moisture absorbent pad, a polymeric grid disposed within the container for providing support for the weight of the animal, and a porous synthetic green grass surface shaped to overlie the polymeric grid base.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 17, 2012
    Inventors: Tilden A. SMITH, II, Dylan M. Balsz
  • Patent number: 8074603
    Abstract: A waste disposal system includes a basin having a bottom and at least one side. A retainer is disposed in the basin. A plurality of flexible nets are disposed in the basin. A securing rim is in abutting contact over the at least one side edge of the basin. The plurality of nets have at least one edge disposed between the securing rim and the basin.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: December 13, 2011
    Assignee: Millenium Research Group, Ltd.
    Inventors: Vernon C. Ohlman, Barry Lilly
  • Publication number: 20110139081
    Abstract: Apparatus for cleaning a cat litter box to remove lumps of excrement while leaving most of the particles of liter in the box, and for hygienically disposing of the removed lumps. The apparatus includes a flexible bag (32) with a front bag end (36) forming a main opening (34) and with a rear bag portion (72) having multiple small openings (70). A wire frame ((40) holds the bag main opening in an open state, and a cardboard handle (42) holds the wire frame and bag front end. The handle is used to drag the bag forwardly through the pool of particles in the litter box while lumps larger than the small openings are captured in the bag. The handle is then slid down to close the bag, and the bag with lumps therein is disposed of as by dropping it in a garbage can.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Inventor: Bart E. Greenhut
  • Publication number: 20110011347
    Abstract: A waste disposal system includes a basin having a bottom and at least one side. A retainer is disposed in the basin. A plurality of flexible nets are disposed in the basin. A securing rim is in abutting contact over the at least one side edge of the basin. The plurality of nets have at least one edge disposed between the securing rim and the basin.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Inventors: Vernon C. Ohlman, Barry Lilly
  • Publication number: 20100258056
    Abstract: The present invention relates to a Gizmo Comfort Station, an animal toilet which automatically cleans and collects animal excrements; the Gizmo Comfort Station allows animals to relieve in a flexible schedule, and relieves humans/owners from daily pet waste cleaning and allows a sanitary way of cleaning and collecting excrements. The Gizmo Comfort Station comprises of a toilet body having an excrement receptacle space and an opening for extending to the excrement receptacle drawer; step plate covers, for moving left/right from the center of the opening of the toilet body in order to open/close the opening; a cover driving unit, which is positioned in the toilet body, for driving the step plate covers in a left/right direction; and an excrement transfer apparatus, which is installed at both sides of the toilet body, for moving excrements of pet animals towards an end of the step plate cover in order for excrements to drop into the excrements receptacle drawer.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 14, 2010
    Inventor: Kee Seon HONG
  • Publication number: 20100095899
    Abstract: A disposable litter pan that is made of a flexible material, preferably biodegradable non-plastic material, such as thermally pressed cardboard or other paper fiber material treated with an aqueous coating that inhibits degradation of the pan in the presence of fluids. The pan is a generally self-supporting pan structure having two end walls, two sidewalls, and a floor; wherein the floor having several perforations, openings, or orifices sized to allow unused cat litter to be sifted into a retaining pan underneath that can be of the same or imperforate construction. The litter pan folds, allowing the sidewalls to engage in a manner that does not allow litter or excrement to escape. The pan can be retained in the folded condition by an integral latching arrangement that also can serve as a handle.
    Type: Application
    Filed: September 18, 2009
    Publication date: April 22, 2010
    Inventors: John M. Lipscomb, Stanley L. Suring
  • Publication number: 20100047119
    Abstract: A system for treating and deodorizing objects such as clothing, bedding, or the like, comprising a bag for receiving said objects, and a system for dispersing a deodorizing treatment fluid such as ozone or the like therethrough. Another embodiment of the present invention contemplates a liner to contain and direct a treatment fluid into an absorbent such as pet litter or the like, to disinfect and renew. A complimentary system to the present invention teaches a deodorization, disinfectant, treatment bin for treating litter infused with animal waste, which treatment bin includes a treatment area utilizing ozone to contain and treat the contaminated litter, rendering same re-useable.
    Type: Application
    Filed: August 31, 2009
    Publication date: February 25, 2010
    Inventor: Laura Sutis Cressy
  • Publication number: 20100043717
    Abstract: A litter containment and disposal apparatus is provided, the apparatus comprising: an open top rectangular portion having a bottom with at least one cutout opening therein and at least three sides; a drawer in communication with a portion of the bottom, wherein the drawer is directly below and slightly larger than the at least one cutout opening; and a container comprising a support portion and a liquid impervious shell which may contain absorbent material attached to the support portion, wherein the support portion is smaller than the drawer and adapted to fit inside the drawer and liquid impervious shell containing absorbent material hangs from the support portion below the drawer.
    Type: Application
    Filed: July 27, 2009
    Publication date: February 25, 2010
    Inventor: Ernest Walker
  • Patent number: 7594480
    Abstract: A system for lining a container or the like containing an absorbent, utilizing the liner to contain and direct a treatment fluid into the absorbent to disinfect and renew. A complimentary system to the present invention teaches a deodorization, disinfectant, treatment bin for treating litter infused with animal waste, which treatment bin includes a treatment area utilizing ozone to contain and treat the contaminated litter, rendering same re-useable. The system of the present invention further contemplates an ozone generator having a timer circuit for providing a flow of ozone to the apparatus of the present invention, the ozone generator further contemplating as exemplary features a timer apparatus for providing optimal treatment, as well as a proximity sensor system for sensing the presence of an animal in the litter area, for controlling the ozone generator.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: September 29, 2009
    Inventor: Laura Sutis Cressy
  • Publication number: 20090194033
    Abstract: An array of disposable mesh liner bags are removably attached to a rigid flat insert that is held in place with retainers in the bottom of a pet litter box. Each bag has a center mesh and peripheral draw string to lift each bag individually. Litter is sifted through the mesh and solid waste lifted out and tied up in the bag for disposal. A solid mesh bag at the bottom of the array lifts out all of the litter after the top bags have all been used. A removable lid with a peripheral rim holds down the bags overlapping a top ridge of the box walls. A center lid opening admits pets to use the litter box.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 6, 2009
    Inventor: Delbert J. Modlin
  • Patent number: 7434539
    Abstract: A waste disposal system includes a receptacle with a base adapted to receive a waste tray assembly on a top panel thereof. The top panel includes an inlet drain opening. A discharge drain is provided in the receptacle base. The waste tray assembly can include natural or artificial turf, and is removable from the top panel. A cover can be mounted on the receptacle base and can be movable between open and closed positions. Alternatively, a lid can be provided for removably mounting on the receptacle base.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: October 14, 2008
    Assignee: Epic Pets Incorporated
    Inventor: Theodore R. Gloor
  • Patent number: 7380519
    Abstract: A pet litter box includes a litter container for storing liquid-passing litter and a liquid-absorbing sheet tray for holding a liquid-absorbing sheet. The front-back direction of the liquid-absorbing sheet can be changed without removing the liquid-absorbing sheet from the tray. The pet litter box includes a litter box main body having an opening from which pets enter. The litter box main body includes a litter container for storing liquid-passing litter formed of plural of granular materials provided therein, a liquid-absorbing sheet placed below the litter container for absorbing the liquid passing through the litter, and a liquid-absorbing sheet tray for holding the liquid-absorbing sheet. The liquid absorbing sheet tray can be withdrawn and removed from the front of the litter box main body and reversible in the front-back direction.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: June 3, 2008
    Assignee: Uni-Charm Petcare Corporation
    Inventors: Takeshi Ikegami, Takayuki Matsuo
  • Publication number: 20080083376
    Abstract: A collapsible animal litter pan has polymeric surfaces that are immune to urine soaking. A plurality of hinges collapse and expand the litter pan. The litter pan has sidewalls that locate, receive and stabilize a urine absorption sheet. The urine absorption sheet has a liquid impervious bottom layer, a urine absorption layer composed of cotton, cellulose fluff pulp, commuted pulp, soft wood fine chips, or hydrophilic paper and combinations thereof, together with superabsorbent polymers and a top, liquid permeable, layer. The top and bottom layers are bonded to constrain the urine absorbent layer. An adhesive coating is applied to the bottom layer of the urine absorption sheet for temporarily adhering the sheet to the foldable litter pan for enhanced stability of the urine absorption sheet. Animal urine is substantially completely absorbed by the urine absorbent sheet, and the soiled sheet replaced with a fresh sheet without soiling the litter pan.
    Type: Application
    Filed: November 15, 2007
    Publication date: April 10, 2008
    Inventor: Marni Markell Hurwitz
  • Patent number: 7107934
    Abstract: A transportable litter box has a container body and a lid removably received over an open end of the container body. The container body has wheels rotatably connected thereto at an end opposite the open end. The lid has an opening therein suitable for allowing an animal to enter the container body therethrough. A support structure is connected to the lid so as to retain a bag in an open configuration within the container body regardless of the orientation of the container body. The wheels are formed of wheel halves hingedly connected together over an axle.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: September 19, 2006
    Inventor: Robert Hanks
  • Patent number: 7082892
    Abstract: A cat litter box is provided, comprising four side walls connected in a rectangular shape, a rounded top edge, two hinged bottom trap doors, and protective edges connected to the bottom trap doors to keep litter from emptying when the doors are closed. The cat litter box has particular utility in connection with quickly and completely emptying all litter contents from the box through the bottom trap doors when the cat litter box is lifted.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: August 1, 2006
    Inventors: Patti F. Fraser, Kelly J. Fraser
  • Publication number: 20040118357
    Abstract: A cat lavatory with a lower part and a container holding an absorbent material that can be inserted into the lower part, characterised in that the container comprises a lining layer of non-woven material.
    Type: Application
    Filed: February 9, 2004
    Publication date: June 24, 2004
    Inventor: Dietmar Lange
  • Patent number: 6668755
    Abstract: Device (1) for carrying objects, in particular excrement. This device consists of a film sheet which is provided with openings (3-5) and is placed on the base of a cat litter tray. The cat litter tray is then filled with grit in the conventional manner. To remove excrement the user has to grasp the film at handles (7) in the film sheet which extend outside the cat litter tray close to the ends. The openings (3-5) are made such that excrement cannot pass through openings but the cat litter grit will remain on the base of the cat litter tray. Optionally a number of such film sheets can be placed on top of one another for regular removal of excrement without a large quantity of grit being consumed.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: December 30, 2003
    Inventor: Berend Koster
  • Patent number: 6595159
    Abstract: A bag sifting system, for use with a cat litter box in separating waste products and clumped litter from uncontaminated litter, using a plurality of bags which are extended over the litter box before the litter box is filled with litter. As the litter becomes partially soiled, an uppermost of the bags is lifted from the litter box. Each bag has a sifting region having a plurality of sifting holes which allow uncontaminated litter to fall onto the remaining bags in the litter box below. The waste products and clumped litter, being too large to fall through the sifting holes, remains in the bag. The bag has a non-sifting region without holes, such that the bag is then tilted and rotated so that the waste products and clumped litter fall into the non-sifting region, and are contained therein for disposal.
    Type: Grant
    Filed: February 9, 2002
    Date of Patent: July 22, 2003
    Inventor: Carlo Montalbano
  • Patent number: 6523495
    Abstract: A waste management system including a vessel having an opening into a recess defined at least partially by a bottom wall. A separation device is included having a porous surface disposed substantially laterally across the recess, and spaced-apart from, and adjacent the bottom wall. The waste management system further includes a plurality of substantially non-porous particulate material disposed atop the separation device in a manner spaced above the bottom wall such that liquids impinged upon the particulate materials are caused to pass directly therethrough and separate therefrom for collection on the bottom wall.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: February 25, 2003
    Inventor: Gaye A. Rydman
  • Publication number: 20020073928
    Abstract: The present invention relates to a method for treatment of liquid or semi-liquid animal waste using porosive particulate matter to remove malodorous materials, and to an organic fertilizer composition comprising organic substances derived from animal waste, said organic substance being held in pores of porosive, nutritionally inert particulate matter.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 20, 2002
    Applicant: Innovative Material Solutions, LLC
    Inventors: Dov Ingman, Valdimir M. Ogenko
  • Patent number: 6135058
    Abstract: A sanitary cat litter box and method of use. The sanitary cat litter box comprises a box top sized to frictionally fit onto a box bottom, an impervious bag sized to fit into the box bottom, and at least one sieve bag nested in the impervious bag. The box has a box mouth and a box aperture. The impervious bag has an impervious bag mouth co-extensive with the box mouth and an impervious bag aperture co-extensive with the box aperture. Each sieve bag has a sieve bag mouth co-extensive with the box mouth and a sieve bag aperture co-extensive with the box aperture. Means is provided to hold the corresponding box, impervious bag, and sieve bag mouths together, and to hold the corresponding box, impervious bag, and sieve bag apertures together. In use, the sieve bag(s) and impervious bag are placed within the box bottom, and the corresponding apertures attached. Cat litter is placed in the uppermost sieve bag, the corresponding mouths are attached, and the box top is installed on the box bottom.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: October 24, 2000
    Inventor: Alice Jaeger
  • Patent number: 5983832
    Abstract: A cat litter box with bag system (10) comprising a pan (12). A litter disposal bag (14) is nested into the pan (12). A plurality of feces disposal bags (16) are nested into the pan (12) over the litter disposal bag (14). A protective insert (18) having an open bottom is nested into the pan (12) over the uppermost feces disposal bag (16). When a quantity of litter (20) is placed into the pan (12) and used by a cat (22) to deposit feces (24), the protective insert (18) can be withdrawn and each feces disposal bag (16) can be removed one at a time as needed to separate the feces (24) from the litter (20), then tied and discarded. When the litter disposal bag (14) is reached and withdrawn it will take all of the litter (20) out of the pan (12) to be discarded.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: November 16, 1999
    Inventor: Eun Sook Seo
  • Patent number: 5890452
    Abstract: A flexible, reusable quick sifter for use with a litter box which employs litter of the clumping type. The sifter has an expandable or stretchable netting secured to a hydrophobic surface across an opening such as a slit in a central area of the box. On lifting, clumping litter disposed in the central area spreads the netting and the slit open to allow unclumped litter to sift through the netting. The clumped litter is retained in the quick sifter and netting material for convenient disposal. The quick sifter is made from a rubberized fabric for reusability.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: April 6, 1999
    Assignee: Marcee G. Lundeen
    Inventors: Marcee G. Lundeen, Daniel N. Lundeen, Milton Gaman
  • Patent number: 5752466
    Abstract: A liner-sieve system for use with a litter box which employs litter of the clumping type. The system includes a cassette having a plurality of flexible liner sheets stacked over the litter box with an expandable or stretchable netting secured to a surface of each liner sheet disposed in a central area of the box. A releasable flap in the form of a slit is formed in each liner sheet beneath the netting. The liner sheets are fused together at peripheral edges which can be draped over the wall of the litter box, and the liner sheets are perforated adjacent the peripheral edges for separation of an uppermost liner sheet from the next lower liner sheet. Clumping litter disposed in the central area opens the flap to allow the unclumped litter to sift through the netting onto the next lower liner sheet. The clumped litter and feces is retained in the liner and netting material for convenient disposal.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: May 19, 1998
    Assignee: Marcee G. Lundeen
    Inventors: Marcee G. Lundeen, Daniel N. Lundeen, Milton Gaman
  • Patent number: 5709171
    Abstract: A disposable cat litter box includes a supporting base and a removable, disposable bag of litter which is designed to fit inside of the base. The disposable bag is provided with a draw string to facilitate its closure after use, and a cardboard bottom inside of the bag provides for a conforming fit of the bag within the base. In a modified embodiment, a plurality of disposable bags are nested inside of the base, and each bag is of a pleated structure with small reinforcement wires going in vertical and horizontal directions. This allows one side of the bag to be lifted upwardly within the base so as to form a deflecting shield which reduces the amount of litter spillage from the bag during a use of the box by a cat.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 20, 1998
    Inventor: Johnnie Moore, III
  • Patent number: 5564366
    Abstract: A litter box system and method for containing and separating animal waste from litter includes a first box and a second box forming a container which houses the litter, a floor card, and a cover sheet for absorbing odors. The litter box system also includes an additional floor card for use during the cleaning process, which includes installation of the additional floor card, a clean cover sheet, and a filter bag. The litter box system is inverted, depositing the litter into the filter bag for filtering litter through apertures in the filter bag, while retaining animal waste within the filter bag for disposal. Each of the boxes is substantially identical having an opening for passage of animal waste into the litter box system. A flange surrounds the opening for helping to retain the litter within the litter box system during use by an animal. The cover sheet may be coated with a protective material, such as wax, for substantially preventing the passage of liquid animal waste therethrough.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: October 15, 1996
    Inventor: Michael T. Hancock
  • Patent number: 5551376
    Abstract: A liner-sieve system for use with a litter box which employs litter of the clumping type. The system includes a cassette having a plurality of flexible liner sheets stacked over the litter box with a netting secured to an upper surface of each liner sheet disposed in a central area of the box. A releasable flap is formed in each liner sheet beneath the netting. The liner sheets are fused together at peripheral edges which can be draped over the wall of the litter box, and the liner sheets are perforated adjacent the peripheral edges for separation of an uppermost liner sheet from the next lower liner sheet. Clumping litter disposed in the central area opens the flap to allow the unclumped litter to sift through the netting onto the next lower liner sheet. The clumped litter and feces is retained in the liner and netting material for convenient disposal. The flap generally inhibits litter from passing through the netting until the uppermost liner sheet is lifted from the next lower liner sheet.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: September 3, 1996
    Inventors: Marcee G. Lundeen, Daniel N. Lundeen, Milton Gaman
  • Patent number: 5207772
    Abstract: A litter box liner system and method for use with an animal waste litter box and litter material has separably attached layers of perforated filters which line the bottom of the box over which litter material is spread. Periodic removal of each filter recirculates the litter material from the bottom up and catches solid waste for convenient and sanitary disposal. An unperforated bottom layer lines and protects the interior of the litter box from contact with the litter material and captures all of the litter material for convenient and sanitary disposal. The separably attached layers of perforated filters may be individual sheets or incorporated into individual interfitting filter liner bags which fit over the litter box and contain solid waste upon removal. Alternatively, the top facing surface of a single liner bag may include layers of separably attached filters.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: May 4, 1993
    Inventors: John J. Lauretta, Romana A. Lauretta
  • Patent number: 5158042
    Abstract: A kitty litter disposal device for hygienically reusing kitty litter in a litter box has a plurality of fine-meshed nets in juxtaposition with the bottom of the litter box in the box. Each net covers the bottom of the litter box and extends along the inside surfaces of the sides of the litter box, over the lip of the litter box and along at least part of the outside surfaces of the sides. Net fasteners in the nets and on selected sides of the litter box releasably fasten the nets in position in the box, whereby kitty litter in the litter box on the nets is siftable via the uppermost of the nets upon unfastening of the uppermost of the nets and manual holding of same in the box at a distance above the remaining ones of the nets thereby to pass the kitty litter into the box.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: October 27, 1992
    Assignee: C. M. Hammerslag Associates, Inc.
    Inventors: Charles M. Hammerslag, Joyce A. Moebes
  • Patent number: 5129364
    Abstract: A disposable cat litter box is provided which is made entirely of a single piece of cardboard. The litter box has a lower portion to hold cat litter and an expandable upper portion which completely encloses the cat litter except for providing an opening for ingress and egress of the cat. A removable mesh-type litter bag is provided which can be simply removed and thrown away when the litter box is full to renew the same for additional use. A charcoal filter can be provided to control odors.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: July 14, 1992
    Inventor: Randall Pirkle
  • Patent number: 5121712
    Abstract: An animal litter box liner of flexible, sheet-like material is provided with holes of an appropriate size and location for allowing clean, dry litter to sift therethrough while simultaneously retaining clumps of urine-soiled litter and feces within the liner as it is lifted from a litter pan.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: June 16, 1992
    Assignee: Alfa-Pet, Inc.
    Inventors: Benjamin M. Schulein, Jr., Joan E. Polsen
  • Patent number: 5062392
    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.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: November 5, 1991
    Assignee: The Procter & Gamble Company
    Inventor: Bruce W. Lavash
  • Patent number: 5038721
    Abstract: A system which separates the pet excreta collection, storage and disposal functions wherein each individual component used to perform each of these functions is optimized for its intended purpose. 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 of the present invention 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 fitering 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.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: August 13, 1991
    Assignee: The Procter & Gamble Company
    Inventors: William R. Ouellette, John L. Hammons, Bruce W. Lavash
  • Patent number: 5031578
    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.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: July 16, 1991
    Assignee: The Procter & Gamble Company
    Inventors: John L. Hammons, William R. Ouellette, Bruce W. Lavash