US3723999A - Portable waste disposal unit - Google Patents

Portable waste disposal unit Download PDF

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Publication number
US3723999A
US3723999A US00191595A US3723999DA US3723999A US 3723999 A US3723999 A US 3723999A US 00191595 A US00191595 A US 00191595A US 3723999D A US3723999D A US 3723999DA US 3723999 A US3723999 A US 3723999A
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United States
Prior art keywords
cage
pawl
rotation
shaft
disposal unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00191595A
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English (en)
Inventor
M Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mileahead Industries Inc
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Mileahead Industries Inc
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Filing date
Publication date
Application filed by Mileahead Industries Inc filed Critical Mileahead Industries Inc
Application granted granted Critical
Publication of US3723999A publication Critical patent/US3723999A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K11/00—Closets without flushing; Urinals without flushing; Chamber pots; Chairs with toilet conveniences or specially adapted for use with toilets
    • A47K11/02—Dry closets, e.g. incinerator closets
    • A47K11/026—Dry closets, e.g. incinerator closets with continuous tubular film for receiving faeces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Definitions

  • ABSTRACT There is disclosed a portable unit for the reception of human waste having interrelated self-synchronizing equilateral polygon cage means for the sequential sealing and disposition in the unit of increments of plastic tube material containing waste.
  • the disposal unit provides a closed outer casing supported upon a rigid internal frame.
  • Tubular plastic material is stored in folds in a groove immediately adjacent to the seat and can be freely withdrawn downwardly to flush the unit when desired. During such movement of the plastic tube, it is restrained slightly by passing between the edge of the groove and the edge of the seat.
  • a unique tube sealing and withdrawing mechanism is provided in the form of two counter-rotating selfsynchronizing equilateral polygon cages, each having opposing pairs of sealing elements between which the tube must pass.
  • One of the cages rotates about a fixed axis while the other, spring-urged toward the first, is permitted freedom to rotate while moving horizontally.
  • At all times at least one pair of sealing elements is maintained in contact with the tube as it passes through and is pulled downwardly by the cages.
  • two pairs of sealing elements are in contact with the tube for double protection.
  • increments of tube with waste encapsulated therein pass into the base of the unit for storage within a plastic liner.
  • the liner is removable upon separation of the outer casing by lifting the upper portion and frame clear of the lower section of casing which is devoid of sharp edges which might tear the liner.
  • FIG. 1 is a three-quarter perspective view of the disposal unit of the present invention
  • FIG. 2 is a top view of the unit of FIG. 1 with parts broken away;
  • FIG. 3 is a horizontal section taken generally through the center of the waste disposal unit
  • FIG. 4 is a vertical section taken in the direction of arrows 4-4 of FIG. 2;
  • FIG. 5 is an enlarged fragmentary view of portions of FIG. 4 showing additional parts
  • FIG. 6 is a view similar to that of FIG. 5 with the parts thereof shown in a sequential position;
  • FIG. 7 is a partial top view of handle actuating portions of the disposal unit.
  • FIG. 8 is a section taken in the direction of arrows 88 of FIG. 7.
  • Unit 10 is a portable dry flush sanitary disposal unit for the receipt of waste, having lower and upper casings 11 and 12 of a suitable plastic material, a plastic seat 13 and cover 14.
  • the upper casing 12 has an outer peripheral flange 12a which is closely fitted over and rests upon an inner peripheral flange 11a of the lower casing 11.
  • Releasable clasps 16 secure the casings together.
  • a frame 17 having vertical side walls 18 of sheet steel having outer peripheral flanges 18a. Side walls 18 have cutouts 18b therein to lighten the structure (see FIGS. 3 and 4). Side walls 18 are connected further and run by horizontal cross members 19.
  • the frame 17 is secured to the casing 12 by suitable mechanical fastening means interconnecting casing I2 with flanges 18a.
  • the casing 12 includes a top portion 21 having an annular groove 22 therein for the reception of folded layers of plastic tube 23.
  • the cover 14 is secured to the casing 12 at 24 as is the seat 13 at 26. The top portion 21 of the casing 12 and the seat 13 therefore structurally rest upon the upper end of the frame 17 and the casings 11 and 12 are therefore not-required to provide structural support.
  • tubular plastic material 23 can be withdrawn from groove 22 by an advancing means to be described.
  • the tube 23 will pass between the inner annular edge 21a and a depending lip 13a of the seat 13.
  • the spacing between the members 21a and 13a is such that tube 23 will be restricted somewhat from being freely withdrawn from the groove 22.
  • tube 23 forms a closed receptacle 23a for waste, the lower end of the tube being sealed by passing between a roller 27 which is maintained in close contact against a mating L- shaped member 28, except for the interposition of the tube 23.
  • Rollers 27 define the corners of a rectangular cage 29 having sheet metal ends 30 rigidly secured to the rollers.
  • L-shapedmembers 28 (four in number) similarly form a part of a second cage 31 whose ends are sheet metal plates 32.
  • the relationship between cages 29 and 31 provides for the sequential mating of rollers 27 in contact with L-shaped members 28 to provide a sealing pressure against the tube 23 as it passes between the respective cages 29 and 31.
  • FIGS. 5-8 it will be seen that plates 30 are supported upon a rectangular shaft 33 extending therebetween.
  • Shaft 33 passes through plates 30 and is rotatably supported within each side wall 18 passing through openings 18b (see FIGS. 7 and 8).
  • Shaft 33 is welded on one side externally of the adjacent wall 18 to an actuating plate 34 having in its periphery four rectangular slots 34a spaced at intervals.
  • Shaft 33 receives in telescoping relation a second, round shaft 36 attached to handle 37.
  • Shaft 36 has a reduced diameter portion 360 (FIG. 3) whose inner end forms with the enlarged portion of shaft 36 a shoulder 36b.
  • a stop pin 39 connected internally to rectangular shaft 33 therefore permits relative rotation between portion 36a and member 33 but prevents the withdrawal of shaft 36 in an outward direction beyond the outward travel of shoulder 36b.
  • Shaft 36 furthermore defines a slot 360 which is keyed to a pawl bearing plate 40 by key 40a.
  • a pawl 42 is pivotally attached by pin 41 to the plate 40.
  • the pawls actuating end 42a is received within each of the slots 34a of plate 34.
  • the pawl 42 furthermore has a tab 42b extending through plate 40 which passes through slot 18c in the side wall 18.
  • the bottom portion of slot 180 is shaped as a cam surface whose function will be described.
  • the actuating end 42a of the pawl is urged toward plate 34 by means of a spring 44 attached to plate 40.
  • FIGS. 5 and 6 illustrate the result of the foregoing actuation of plate 34 through an initial phase of 45. It will be seen that as plate 34 rotates it carries with it cage 29 and an upper roller 27 engaging against an upper L-shaped member 28 of cage 31, thereby effecting a counter-rotation of cage 31 which causes pulling downward of the tube 23 trapped therebetween. Cage 31 is supported for rotation about a central shaft 47 which passes through side walls 18 at opposite ends thereof.
  • cage 29 has completed approximately 45 of downward rotation.
  • springs 49 cause the final 45 of rotation to take place without further actuation by the shaft 36. It will be observed, furthermore, that immediately prior to actuation of cage 29, there is contact between two opposing rollers 27 and members 28 to effect a double seal.
  • sealing is maintained by one of the rollers 27 against a member 28 which is assisted by the spring pressure of springs 49. As the final 90 movement of the cage takes place, double sealing again takes effect.
  • tab 42b will contact and ride outwardly upon the cam surface of 180 to lift the pawl end 42b from engagement in a slot 34a.
  • the final position of tab 42b is shown in dotted FIG. 8. This allows the handle 37 and shaft 36 to be then rotated in a reverse direction for a subsequent engagement of the pawl and actuating plate and subsequent 90 rotation of cages 29 and 31.
  • a plastic liner 52 is secured within the lower casing 11 by clips 53.
  • cage 29 rotates relative to cage 31 beginning with the position shown in FIG. 5, a section of tube 23 containing waste will be drawn downwardly (see FIG. 6) until the next roller 27 in rotation again contacts the tube 23 (FIG. 5), after of rotation of the respective cages. In this position waste is sealed in the tube 23 between upper and lower rollers 27 and L-shaped members 28.
  • a second 90 rotation of cages 29 and 31 will cause the further progress of encapsulated waste to be deposited in the liner 52.
  • the clasps 16 are opened to release the upper casing 12 from the lower casing 11, whereupon the upper casing and frame 17 can be removed to expose the liner 52 which is sealed in a suitable manner prior to removal. It will be noted that when the frame 17 and casing 12 are removed, there are no sharp edges to tear or snag the liner 52 as it is removed.
  • cage 29 drives cage 31 through an initial 45 of rotation, cage 31 driving cage 29 from 45-90 of rotation.
  • This driving of the cages is accomplished without complicated gearing.
  • at all times during the driving of cages 29 and 31 there is at least one pair of sealing elements in contact with the tube 23 and at the end of each 90 of rotation two pairs of sealing elements provide double protection.
  • plates 32 are so shaped in relation to the position of rollers 27 and members 28 that the rollers will automatically be brought back into paired positioning with members 28.
  • a waste disposal unit of the type including a closed portable closet for the reception of waste sealed and contained in a continuous tube of plastic sheet material, said unit having a seat and an annular receptacle area for holding a quantity of said plastic material beneath an opening in said seat means for successively withdrawing increments of said plastic material downwardly into said unit and means for sealing waste in said increments and depositing same in said unit for storage and subsequent removal, the improvement comprising, a first equilateral polygon cage rotatable about a fixed horizontal axis, a second equilateral polygon cage rotatable about a horizontal axis movable in a horizontal direction toward and away from said first cage, a first set of spaced, horizontal sealing elements on said first cage, a second set of horizontal mating sealing elements on said second cage contacting said first set of elements lengthwise in sequence, the contact between said elements being sufficient to grip said plastic material and seal a flattened widthwise strip of said material when passed therebetween, means for counter-rotating said cages to draw said plastic material
  • the waste disposal unit according to claim 1 wherein said unit includes a rigid frame, an outer casing enclosing said frame means for supporting said first cage in said frame for rotation about a fixed axis, means for supporting said second cage for rotation in said frame about a second horizontally movable axis, and spring means urging said second cage into contact with said first cage.
  • said first cage comprises two generally square end plates connected at each corner by one of said sealing elements, the sealing elements of said first cage consisting of rollers and the sealing elements of the second cage consisting of L- shaped members whose open sides receive said rollers.
  • Said second cage comprises two generally square end plates notched intermediate each side thereof to receive said L-shaped members which join said end plates, the relation between the square shaped ends of the second cage and the rollers of the first cage causing automatic centering of said rollers in said L-shaped members to maintain said cage automatically in synchronization.
  • the disposal unit according to claim 4 wherein said first cage rotates upon a shaft, an actuating plate attached to said shaft defining in its periphery actuating notches, a second shaft telescopically received within said cage shaft and freely rotatable with respect thereto, a pawl bearing plate connected to said second shaft, a pawl pivotally mounted to said pawl bearing shaft, spring means urging the end of said pawl toward the periphery of said actuating plate and said notches, a pawl tab and cam means for causing said tab to lift said pawl clear of each notch upon rotation of said pawl bearing plate in one direction and handle means for rotating said second shaft and pawl bearing plate to drive said actuating plate and cage.
  • a plastic liner is provided within said lower casing to receive increments of plastic tube encapsulating waste therein and said lower casing is free of sharp edges to tear or snag said liner.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Refuse Receptacles (AREA)
  • Processing Of Solid Wastes (AREA)
  • Non-Flushing Toilets (AREA)
US00191595A 1971-10-22 1971-10-22 Portable waste disposal unit Expired - Lifetime US3723999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19159571A 1971-10-22 1971-10-22

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US00191595A Expired - Lifetime US3723999A (en) 1971-10-22 1971-10-22 Portable waste disposal unit

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US (1) US3723999A (enrdf_load_stackoverflow)
JP (1) JPS4850873A (enrdf_load_stackoverflow)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878572A (en) * 1973-09-21 1975-04-22 Eleon Gustav Eriksson Collecting device for solid or liquid waste material
US4027625A (en) * 1975-05-14 1977-06-07 Wheeler David C Pet commode
DE3433969A1 (de) * 1984-06-19 1985-12-19 Jürgen H. Dipl.-Kaufm. 8700 Würzburg Lietz Trockenklosett
EP0432643A1 (de) * 1989-12-14 1991-06-19 Johannes Löbbert Trockentoilette
WO1994010893A1 (fr) * 1992-11-13 1994-05-26 Innovation - Ingenierie - Integration - Systeme Dispositif de recuperation et de stockage de dechets
US5765339A (en) * 1994-08-26 1998-06-16 Garland; Thomas A. Diaper pail
US20030131569A1 (en) * 2002-01-02 2003-07-17 Playtex Products, Inc. Odor control cassette
EP3087887A1 (de) * 2015-04-27 2016-11-02 Liftac Ag Folienkassette für eine toilettenvorrichtung
WO2017132466A1 (en) * 2016-01-28 2017-08-03 Edgewell Personal Care Brands, Llc Film cassette having an ovoid shape
US9867512B1 (en) * 2016-08-03 2018-01-16 Mark Ellinghuysen Self-contained portable toilet
USD808680S1 (en) 2014-12-03 2018-01-30 Munchkin, Inc. Cassette
US10053282B2 (en) 2012-10-24 2018-08-21 Munchkin, Inc. Cassette for dispensing pleated tubing
US10206546B1 (en) 2018-03-26 2019-02-19 Mark Ellinghuysen Self-contained portable toilet
US10889433B2 (en) 2007-10-05 2021-01-12 International Refills Company Limited Cassette and apparatus for packing disposable objects into an elongated tube of flexible material
USD995730S1 (en) * 2022-05-22 2023-08-15 Huiyuandong (xiamen) Health Technology Co., Ltd. Portable toilet
USD999348S1 (en) * 2022-02-17 2023-09-19 Xiuling Du Portable toilet
US11974703B2 (en) 2020-01-04 2024-05-07 Kohler Co. Liner toilet
USD1047092S1 (en) * 2023-04-27 2024-10-15 Camper Active GmbH Water closet
USD1071109S1 (en) * 2024-01-11 2025-04-15 Qingdao Chuanghui Times Trade Service Co., Ltd. Portable toilet
WO2025129245A1 (en) * 2023-12-20 2025-06-26 Insight SC Pty Ltd Portable toilet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136992U (enrdf_load_stackoverflow) * 1985-02-15 1986-08-26
JPH07204123A (ja) * 1994-01-14 1995-08-08 Masayuki Nakaya 密封式トイレ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671906A (en) * 1952-11-15 1954-03-16 Robert W Potts Liner for sanitary closets
US2794989A (en) * 1954-08-31 1957-06-11 Pellerito Philip Alexander Sanitary dry-commode
US3401409A (en) * 1966-04-08 1968-09-17 Hans G. Ekrut Waste disposal unit
US3452368A (en) * 1966-10-07 1969-07-01 Fts Corp Portable waste disposer
US3619822A (en) * 1969-11-18 1971-11-16 Thomas Carmichael Sanitary closet
US3648302A (en) * 1970-10-22 1972-03-14 Dev Ind Inc Portable waterless water closet
US3665522A (en) * 1969-11-17 1972-05-30 Pactosan Ab Apparatus for collecting solid or liquid wastes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671906A (en) * 1952-11-15 1954-03-16 Robert W Potts Liner for sanitary closets
US2794989A (en) * 1954-08-31 1957-06-11 Pellerito Philip Alexander Sanitary dry-commode
US3401409A (en) * 1966-04-08 1968-09-17 Hans G. Ekrut Waste disposal unit
US3452368A (en) * 1966-10-07 1969-07-01 Fts Corp Portable waste disposer
US3665522A (en) * 1969-11-17 1972-05-30 Pactosan Ab Apparatus for collecting solid or liquid wastes
US3619822A (en) * 1969-11-18 1971-11-16 Thomas Carmichael Sanitary closet
US3648302A (en) * 1970-10-22 1972-03-14 Dev Ind Inc Portable waterless water closet

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878572A (en) * 1973-09-21 1975-04-22 Eleon Gustav Eriksson Collecting device for solid or liquid waste material
US4027625A (en) * 1975-05-14 1977-06-07 Wheeler David C Pet commode
DE3433969A1 (de) * 1984-06-19 1985-12-19 Jürgen H. Dipl.-Kaufm. 8700 Würzburg Lietz Trockenklosett
EP0432643A1 (de) * 1989-12-14 1991-06-19 Johannes Löbbert Trockentoilette
US5884346A (en) * 1992-11-13 1999-03-23 Innovation-Ingeniere-Integration-Systeme Device for the recovery and storage of waste
WO1994010893A1 (fr) * 1992-11-13 1994-05-26 Innovation - Ingenierie - Integration - Systeme Dispositif de recuperation et de stockage de dechets
US5765339A (en) * 1994-08-26 1998-06-16 Garland; Thomas A. Diaper pail
US20030131569A1 (en) * 2002-01-02 2003-07-17 Playtex Products, Inc. Odor control cassette
US7629036B2 (en) 2002-01-02 2009-12-08 Playtex Products, Inc. Odor control cassette
US10889433B2 (en) 2007-10-05 2021-01-12 International Refills Company Limited Cassette and apparatus for packing disposable objects into an elongated tube of flexible material
US12404096B2 (en) 2007-10-05 2025-09-02 International Refills Company Limited Cassette and apparatus for packing disposable objects into an elongated tube of flexible material
US11772888B2 (en) 2007-10-05 2023-10-03 International Refills Company Limited Cassette and apparatus for packing disposable objects into an elongated tube of flexible material
US11383925B2 (en) 2007-10-05 2022-07-12 International Refills Company Limited Cassette and apparatus for packing disposable objects into an elongated tube of flexible material
US10053282B2 (en) 2012-10-24 2018-08-21 Munchkin, Inc. Cassette for dispensing pleated tubing
USD808680S1 (en) 2014-12-03 2018-01-30 Munchkin, Inc. Cassette
EP3087887A1 (de) * 2015-04-27 2016-11-02 Liftac Ag Folienkassette für eine toilettenvorrichtung
WO2017132466A1 (en) * 2016-01-28 2017-08-03 Edgewell Personal Care Brands, Llc Film cassette having an ovoid shape
US9867512B1 (en) * 2016-08-03 2018-01-16 Mark Ellinghuysen Self-contained portable toilet
US10206546B1 (en) 2018-03-26 2019-02-19 Mark Ellinghuysen Self-contained portable toilet
US11974703B2 (en) 2020-01-04 2024-05-07 Kohler Co. Liner toilet
USD999348S1 (en) * 2022-02-17 2023-09-19 Xiuling Du Portable toilet
USD995730S1 (en) * 2022-05-22 2023-08-15 Huiyuandong (xiamen) Health Technology Co., Ltd. Portable toilet
USD1047092S1 (en) * 2023-04-27 2024-10-15 Camper Active GmbH Water closet
WO2025129245A1 (en) * 2023-12-20 2025-06-26 Insight SC Pty Ltd Portable toilet
USD1071109S1 (en) * 2024-01-11 2025-04-15 Qingdao Chuanghui Times Trade Service Co., Ltd. Portable toilet

Also Published As

Publication number Publication date
JPS4850873A (enrdf_load_stackoverflow) 1973-07-17

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