Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2671906 A
Publication typeGrant
Publication dateMar 16, 1954
Filing dateNov 15, 1952
Priority dateNov 15, 1952
Publication numberUS 2671906 A, US 2671906A, US-A-2671906, US2671906 A, US2671906A
InventorsRobert W Potts
Original AssigneeRobert W Potts
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Liner for sanitary closets
US 2671906 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 16, 1954 Filed NOV. 15, 1952 F IG. 5.


Application November 15, 1952, Serial No. 320,643

5 Claims. 1

This invention relates to dry sanitary closets for use in aircraft, trains and other moving vehicles. Additionally, the invention may be advantageously used in camps, house trailers and the like where water or chemical supplies are not convenient or are not readily available.

An object of the invention is to provide a means for sacking and sealing waste material in dry sanitary closets.

A particular object of the invention is to provide a lightweight dry closet for aircraft, and one which requires very little space for its installation and operation.

An additional object of the invention is to provide a dry sanitary closet which will eliminate obnoxious odors, and at the same time provide a convenient and sanitary means for dis posing of waste materials.

An additional object of the invention is to provide, in a dry closet of the class described, a simple operation for effectively sealing and disposing the waste material, and at the same time preparing the bowl of the closet for the next user.

These and other objects will become apparent from the following description and the accompanying drawings of an exemplary form of the invention, wherein:

Figure l is a vertical sectional view of a dry closet embodying the features of the invention.

Figure 2 is a plan view of the lower housing showing the film sealing jaws in their closed position.

Figure 3 is a broken vertical sectional view showing the film moving jaws in a lower position as the same draws the film containing the waste material downwardly for subsequent disposal.

Figure 4 is a view similar to Figure 3, but showing a position of the film moving jaws during their upward movement.

Figure 5 is a perspective view of the film opera-ting mechanism, including the last referred to jaws.

Figure 6 is a broken elevation and sectional 7 view showing the installation of the mechanism illustrated in Figure 5.

The exemplary form of the invention shown includes a tubular upper housing It] mounted on a floor Ii and a toilet seat [2 mounted on its upper end. The lower end of the housing it includes an outwardly directed flange l 3 which may be detachably secured to the floor ll; however, in some installations it may be desirable to permanently secure the referred to flange.

2 The upper end of the housing In is inwardly flanged as at M for supporting the seat l2.

Within the upper housing In there is a tubular inner wall 15, spaced from the inner surface of said housing, and which wall supports a bowl l6 of formed sheet material. The bowl l6, converges at its lower end to provide a relatively small opening ll, whereas its upper end is outwardly formed into a rolled flange I8. Within the annular space l9 between the upper housing It and the inner wall I5 there is a tubular film 20 of plastic material, such as cellulose, vinyl, acetate or the like. Treated waterproof paper may be used, but preferably the same should include some adhesive substance for sealing purposes hereinafter referred to. As shown in Figlife 1 a considerable length of the film tubing '20 may be received within the annulus l9 by reversing the material on itself in the manner of accordion pleats. The upper end of the tubular film 2c is positioned around and over the rolled flange it of the bowl l6, lining the latter, and thence extending downwardly through the bowl opening I1. An opening 2| is provided in the floor It for receiving and supporting a lower housing 22, the upper end of which isoutwardly flanged as at 23 for engaging the floor surface. The lower end of the lower housing is open, as at 25, and extends into the upper end of a receptacle 26. If preferred, an incinerator may be employed instead of the receptacle 26, and reference is made to my copending application Serial Number 314,468, filed October 13, 1952, illustrating and describing an incinerator of the type referred to.

A film moving mechanism 21, illustrated in detail in Figures 5 and 6, is mounted within the lower housing 22 by means of brackets 28, the upper end of which mechanism is near the lower end of the bowl IS. The mechanism 21 includes a vertical arcuate member 29 having a vertical slot 30 therethrough, best illustrated in Figures 3 and 6, extending nearly its complete length. Parallel with the vertical arcuate member 29 there is a guide rod 3| mounted at its lower end on a laterally extending arm 32 of a depending bracket 33, the latter being provided with a foot 34 for attachment to the lower surface of the floor H. A tubular member 35 is slidably mounted on the guide rod 3i and extends upwardly through a collar 36 in a box-like extension 37 on the side of the upper housing [0. The upper end of the tubular member 35 is provided with a handle 38, whereas the lower end of the member is provided with a laterally extending arm 39 which is slidably received within and through the vertical slot 30 in the vertical arcuate member 29 of the film moving mechanism.

The upper and lower ends of the vertical arcuate member are provided with a horizontal plates 40 and 4| for supporting a vertical rod 42 on which vertically slidable film moving jaws 43 are mounted. The inner end of the arm 39 secured to the vertically movable tubular member 35, is provided with a yoke 44 having openings (not shown) therethrough for receiving the last described rod 42. The inner ends of the jaws 43 are received within the yoke 44, and which inner ends include angularly extending followers 45 for engaging grooves 46 in the inner surface of the vertical arcuate member 29 and on opposite sides of the vertical slot 30. The jaws 43 are spring loaded (not shown) to normally move the same away from each other. However, the upper ends of the grooves 46 are shaped so as to close the jaws 43 when the same reach the upper end of the latter and to spread apart when they reach their lowermost position. During their downward movement the followers 45 are engaged in the vertical slot 30. The last described operation is carried out by means of dogs 41 pivotally mounted in the upper ends of the grooves 46 where the same join the slot 30. The dogs 41 are spring loaded to normally close the upper ends of the grooves 45. The lower ends of the grooves 46 converge, as at 48, and whereby the spring loaded jaws 43 will cause the followers to expand when the latter reach the lower end of the slot 30, thus releasing the film 20 drawn downwardly by the jaws 43.

Sealing jaws are mounted on the upper flange of the lower housing 22 by means of pairs of pivoted arms 50, mounted on rods which in turn are supported at their ends by means of bearings 52. The opposing surfaces of the sealing jaws 49 are provided with interfitting longitudinal grooves 53, and which jaws may be electrically heated as shown by means of wiring connections 54. Ears 55 are provided on the arms 50 adjacent the film moving mechanism 21 for pivotally engaging the upper ends of rods 56, the lower ends of which are angular and pivotally connected with each other, as at 51, near the converging portions 48 of the described grooves 46. Thus, when the film moving jaws 43 move downwardly they contact the joined ends of the last described rods 56, thereby causing the sealing jaws 49 to move inwardly, as shown by means of dotted lines in Figure 1, and close and seal the film 20.

In operation, the film is arranged as shown in Figure 1 and the handle 38 is initially operated to seal an area of the film on itself by means of the sealing jaws 49. After waste material has been deposited in the film 20 lining the bowl IS, the handle 38 is pushed downwardly causing the film moving jaws 43 to engage the film and draw the same downwardly, and at which time the waste material is secured within a bag 59 thereby formed of said film. When the film moving jaws 43 contact the joined portion of the rods 50 the sealing jaws are brought together for sealing the upper end of the bag thus formed. The length of material 20 enclosing the bags 59 are progressively received within the receptacle 26 or the incinerator, as the case may be.

It is to be understood that the invention herein shown and described may additionally be used for other purposes, such as for disposal of garbage and for other purposes. The invention is not limited to the construction herein shown and described, but may be made in many ways within the scope of the appended claims. As set forth in the appended claims, the invention is directed to the liner 20 and its arrangement around, over and through the bowl, since various film moving means may be provided other than the specific film moving construction herein shown and described.

What is claimed is:

1. In a sanitary closet, a bowl having an open ing through the bottom thereof, a supply of tubular film around said bowl and extending upwardly over the periphery thereof and down: wardly through said opening, and means drawing said film downwardly through said bowl.

2. In a sanitary closet as defined in claim 1, the construction wherein said means drawing said film downwardly through said bowl is comprised of a pair of vertically movable jaws adapted to engage the film near said opening and to release said film when said jaws are remote from said opening.

3. In a sanitary closet as defined in claim 1, the combination of a pair of sealing jaws mounted beneath said bowl and on opposite sides of said film, and means moving said sealing jaws inwardly and outwardly relative to each other.

4. In a sanitary closet as defined in claim 1, the construction wherein the length of said tubular film around said bowl is vertically arranged in the manner of accordion pleats.

5. A sanitary closet comprising a housing, a bowl having an opening in the bottom thereof mounted within said housing and spaced from the inner wall thereof, a supply of tubular film within said housing and around said bowl, said film extending upwardly over the periphery of said bowl and downwardly through said opening, and means drawing said film downwardly through said bowl.


' References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 479,897 Murphy Aug. 2, 1892 1,986,422 Zwoyer Jan. 1, 1935 2,041,187 Janda May 19, 1936 2,113,636 Vogt Apr. 12, 1938 2,192,335 Stevens Mar. 5, 1940 2,205,405 Harm June 25, 1940

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US479897 *May 25, 1891Aug 2, 1892 Commode
US1986422 *Nov 28, 1933Jan 1, 1935Transparent Wrap Machine CorpAutomatic packaging machine
US2041187 *Oct 24, 1935May 19, 1936Janda Jeannette HSanitary toilet
US2113636 *Nov 15, 1935Apr 12, 1938Owens Illinois Glass CoMethod and apparatus for forming packages
US2192335 *Jan 14, 1938Mar 5, 1940Stevens Clarence DToilet device
US2205405 *Jul 28, 1938Jun 25, 1940Owens Harm GeorgeMeans for the sanitary disposition of fecal and other refuse materials
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2858778 *Dec 20, 1956Nov 4, 1958White Motor CoDry toilet with incinerator passage closure
US2989828 *Sep 4, 1958Jun 27, 1961Flex O Glass IncPlastic plant package
US3158874 *Mar 15, 1963Dec 1, 1964Lundy Electronics And SystemsSpace waste collecting valve and pump
US3176317 *Dec 6, 1963Apr 6, 1965Kelseaux MarieDisposable water closet bowl liners
US3295223 *Jan 23, 1964Jan 3, 1967Bambenek Robert AClosed environmental simulator for three men
US3401409 *Apr 8, 1966Sep 17, 1968Hans G. EkrutWaste disposal unit
US3405409 *Jan 24, 1966Oct 15, 1968Lundy Electronics & Syst IncMethod and apparatus for disposal of waste liquid and solid material
US3416164 *Jun 23, 1967Dec 17, 1968Hans G. EkrutPortable waste disposal unit
US3422985 *Apr 13, 1965Jan 21, 1969North American RockwellWaste collection assembly
US3452368 *Oct 7, 1966Jul 1, 1969Fts CorpPortable waste disposer
US3457567 *Jun 28, 1967Jul 29, 1969Jeremy F CrissHuman waste disposal system
US3488780 *Jun 14, 1967Jan 13, 1970Ames Blanche AmesApparatus for antipollution of sewage systems at toilet source
US3495278 *Jun 12, 1967Feb 17, 1970Alfred H PetersDisposable bag toilet
US3500480 *Jul 30, 1968Mar 17, 1970Michal John H JrUrinal attachment for toilet bowl
US3643266 *Nov 24, 1970Feb 22, 1972Robert D BlackPortable waste receptacle
US3648302 *Oct 22, 1970Mar 14, 1972Dev Ind IncPortable waterless water closet
US3657763 *Oct 6, 1969Apr 25, 1972Hurd Raymond MTool sheath
US3665522 *Nov 17, 1969May 30, 1972Pactosan AbApparatus for collecting solid or liquid wastes
US3693193 *Nov 23, 1970Sep 26, 1972Coleman CoPortable sanitary toilet
US3723999 *Oct 22, 1971Apr 3, 1973Mileahead Ind IncPortable waste disposal unit
US3878572 *Sep 21, 1973Apr 22, 1975Eleon Gustav ErikssonCollecting device for solid or liquid waste material
US4025969 *Sep 18, 1975May 31, 1977Trailer Finans AbSanitary closet
US4870709 *Apr 7, 1987Oct 3, 1989The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationApparatus for waste collection and storage
US4937891 *Aug 10, 1989Jul 3, 1990The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationValve for waste collection and storage
US4942632 *Aug 10, 1989Jul 24, 1990The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationMethod for waste collection and storage
US5765339 *May 12, 1997Jun 16, 1998Garland; Thomas A.Diaper pail
US5884346 *Nov 13, 1993Mar 23, 1999Innovation-Ingeniere-Integration-SystemeDevice for the recovery and storage of waste
US6003162 *Jan 15, 1998Dec 21, 1999Toyota Jidosha Kabushiki KaishaWaste disposal apparatus
US6713140Dec 21, 2001Mar 30, 2004Kimberly-Clark Worldwide, Inc.Latently dispersible barrier composite material
US6783826Dec 21, 2001Aug 31, 2004Kimberly-Clark Worldwide, Inc.Flushable commode liner
US7617660 *Jul 27, 2006Nov 17, 2009International Refills Company Ltd.Apparatus for forming waste containing packs
US8959880Oct 13, 2011Feb 24, 2015International Refills Company LimitedFilm-dispensing cassette and rimmed bag for waste-disposal unit
US9085404Nov 28, 2012Jul 21, 2015Munchkin, IncCassette for dispensing pleated tubing
US9357890Feb 12, 2014Jun 7, 2016Sanitation Creations, LlcWaterless toilet system and methods of use
US9364124Feb 20, 2013Jun 14, 2016Sanitation Creations, LlcWaterless toilet system and methods of use
US20030116575 *Dec 21, 2001Jun 26, 2003Ellingson Daniel L.Disposable container with a spill prevention mechanism
US20080184677 *Jul 27, 2006Aug 7, 2008International Refills Company LimitedApparatus for Forming Waste Containing Packs
DE1225831B *Jan 9, 1961Sep 29, 1966Walter WidmerTrockenklosett
WO1995024853A1 *Mar 13, 1995Sep 21, 1995Waterstate LimitedDry toilet
WO1997027795A1 *Feb 2, 1996Aug 7, 1997Englong HeWaterless closet assembly
WO1997039673A1 *Apr 24, 1996Oct 30, 1997Englong HeCompletely automatic waterless closet
WO2012048422A1 *Oct 11, 2011Apr 19, 2012Angelcare Development Inc.Film-dispensing cassette and rimmed bag for waste-disposal unit
U.S. Classification4/484, 53/548, 452/48
Cooperative ClassificationA47K11/026
European ClassificationA47K11/02C