Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Iniciar sesión
Usuarios de lectores de pantalla: deben hacer clic en este enlace para utilizar el modo de accesibilidad. Este modo tiene las mismas funciones esenciales pero funciona mejor con el lector.

Patentes

  1. Búsqueda avanzada de patentes
Número de publicaciónUS3546716 A
Tipo de publicaciónConcesión
Fecha de publicación15 Dic 1970
Fecha de presentación19 Jun 1968
Fecha de prioridad19 Jun 1968
También publicado comoDE1930938A1, DE1930938B2
Número de publicaciónUS 3546716 A, US 3546716A, US-A-3546716, US3546716 A, US3546716A
InventoresDavid H E Laumann
Cesionario originalDavid H E Laumann
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Disposable bedpan liner
US 3546716 A
Imágenes(1)
Previous page
Next page
Descripción  (El texto procesado por OCR puede contener errores)

Dec. 15,y 1970 D, H, E, LAUMANN 3,546,716

DISPOSABLE BEDPAN LINER Filed June 19, 1968 United States Patent Office 3,546,716 Patented Dec. l5, 1970 3,546,716 DISPOSABLE BEDPAN LINER David H. E. Laumann, P.O. Box 960, Freehold, NJ. 07728 Filed June 19, 1968, Ser. No. 738,203 Int. Cl. A61g 9/00 U.S. Cl. 4-112 5 Claims ABSTRACT OF THE DISCLOSURE A disposable bedpan liner is provided which has a cold water-disintegratable or -soluble base film such as polyvinyl alcohol having a thin continuous water insoluble coating thereon, which may be made of microwax or paraffin modified for adhesion and flexibility with about 20 to 40% ethyl vinyl acetate polyethylene or other hydrophobic materials such as silicates, silicones or cellulose derivatives such as ethyl cellulose or nitro-cellulose and absorbent tissue paper (l-ply toilet tissue) on and adhered to the coating. The liner is very thin but of adequate tensile strength and resistance to human excrement but disintegrates in approximately five to ten seconds in contact with water when deposited in a toilet bowl or disposal system. Other paraffins and coatings of still other waterinsoluble materials may be substituted which have the temporary water resistant properties required.

The present invention relates to a disposable bedpan liner which is of 3ply or optionally of 4-ply nature and which is intended to disintegrate in about five to ten seconds in contact with water when deposited in a toilet bowl and ushed, thereby greatly increasing convenience and cutting down on cleaning and sanitizing operations in a hospital or in the home.

The invention is illustrated in the accompanying drawing in which:

FIG. l is a perspective view of a liner in accordance with the invention having portions broken away to illustrate the 3-ply construction;

FIG. 2 is a cross-sectional view taken through a bedpan and showing the liner in position therein;

FIG. 3 is a fragmentary sectional view taken on line 3 3 of FIG. 2 and showing the liner in position for use; and

FIG. 4 is an elevational view of' the liner and contents as removed from the bedpan ready for disposal.

It will be clear from FIG. l of the drawing that the preferred and presently best known form of bedpan liner of the present invention is 3-ply, i.e., is composed of three layers, namely a strong base film 11 of a waterdisintegratable or -soluble polyvinyl alcohol (PVA) polymerization product, a thin Water-insoluble coating 12 (in which wax, preferably modified for adhesion and flexibility with to 40% ethyl vinyl acetate polyethylene) on one side of base member 11 and only thick enough to provide a continuous water repellent or resistant surface or other hydrophobic materials such as silicates, silicones or cellulose derivatives such as ethyl cellulose or nitro-cellulose, and on the coating 12 there is disposed in adhered condition a single ply tissue paper 13 of toilet tissue grade. While the liner may be made in various thicknesses and sizes and shapes, it has been found that a rectangular, preferably a square shape, about twenty inches long on each side is best, as this, when used in conjunction with a standard bedpan designated at 14, leaves the four corners of the liner projecting beyond the boundaries of the bedpan and provides simple and convenient means for a nurse or attendant to pick up the liner with its contents deposited thereon after use by the patient and so that the liner may be gathered into a shape approximating that shown at 15 in FIG. 4. The thus gathered liner, with its contents, is then readily removed from the bedpan which has been carried to a toilet or flush disposal system and after depositing the liner and contents in the toilet for fiushing, the bedpan requires a minimum of cleaning or sanitizing. The bedpan with the liner and its contents of excrement (urine and feces) is carried to the place where it is to be disposed of, which is usually a toilet bowl and upon contact of the liner and its contents with the Water in the toilet bowl, the polyvinyl alcohol or other cold water-soluble base film rapidly begins to disintegrate or dissolve on its uncoated surface and this causes rupture and fragmentation of the waterinsoluble coating and the tissue paper top layer while the entire liner and contents can then, after only a Very few seconds, be flushed down the toilet or sewage disposal system. In this way, the patient and nurse, for example, are provided with a convenient and greatly improved sanitary means for collecting and disposing of excrement with minimum of malodor and the bedpan itself thereafter requires very little cleaning and sanitizing in contrast to ordinary practices.

It is to be understood that the polyvinyl alcohol base film is per se known and available and is of a type which is known to be water-disintegratable or -soluble after a short time of contact with water, but the presence of the water-insoluble coating prevents or retards premature disintegration of the polyvinyl alcohol base film while the tissue paper layer on the paraffin or wax coating prevents the liner from sticking to the patients buttocks. The entire liner is very thin and can be of a thickness of about 1/100 of an inch or less or, optionally, it may be thicker, if desired, or the tissue paper layer may be uffy with greater slip. The tensile strength and resistance to rupture of the liner as a whole is more than adequate for the excrement which it receives.

Thus, there has been provided a very simple and inexpensive, yet highly useful, product which has great utility and advantage, particularly since hospitals are frequently overcrowded and understafed. The bedpan may be of any usual or conventional nature and design and while ordinarily made of enameled metal, this does not constitute any limitation upon the invention. When the liner is to be used, it is placed over the bedpan with the PVA or other cold water-soluble film on the underside and then pushed centrally lightly downwardly into the bedpan while still allowing the four corners of the liner to project beyond the bedpan so that they can be used to pick up and gather the liner into the shape shown in FIG. 4 at the appropriate time. The paper layer 13 not only prevents adherence of the liner to the buttocks of the patient but prevents the shock of the coldness of the metal of the bedpan from affecting the patient. When the liner and contents are deposited in a toilet, the PVA rapidly dissolves or disintegrates and the unsupported insoluble coating then has insufficient strength so that it breaks up into numerous small pieces and unlike an insoluble plastic or paper sheet or film, it presents no problem to the sewage disposal system.

It is also to be understood that a 4-ply liner constitutes a modified form of the invention wherein the PVA or other cold water-soluble base film is provided on the other side of the base film from the insoluble coating with a layer of paper which is strong when dry but of weak wet strength. The water-insoluble coating material can also be other hydrophobic materials such as silicates, silicones, or cellulose derivatives, such as ethylcellulose or nitrocellulose.

The foregoing is intended as illustrative and not as limitative and within the terms of the appended claims,

l Y 3 various modifications may be made without departing from the'principles described.

What is claimed is:

1. A bedpan liner adapted to be placed over a bedpan with its corners projecting beyond the bedpan comprising a cold water-soluble base lrn of synthetic polymeric material, a water-insoluble or -repellent coating on one side of the base lm and tissue paper covering and adherent to the insoluble coating.

2. A liner according to claim 1 wherein the cold watersoluble base lm is polyvinyl alcohol.

3, A liner according to claim 1 wherein the insoluble coating is a combination of ethyl vinyl acetate polyethylene-parain-rnicrowax, or a waterproof coating material which would physically break up or eventually dissolve in a sewage system.

UNITED STATES PATENTS 3,115,644 12/1963 Bloodworth 4-112 3,377,631 4/ 1968 Whitney 4-112 I 3,418,663 12/1968 Scott 4-113 FOREIGN PATENTS 898,903 5/1960 Great Britain 4-112 r LAVERNE D. GEIGER, Primary Examiner J. H. DODGE, Assistant Examiner UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,546,716 Dated December 15 197 Inventods) David H. E. Laumann It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

In the heading to the printed specification, lines 3 and 4, "David H. E. Laumann, P. O. Box 960, Freehold, N. 07728" should read David H. E. Laumann, Freehold, N. J., assiglor to National Polymers and ChemicalsV Corporation,

Freehold, N. J.

Signed and sealed this 6th day of April 1971.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. WILLIAM E. SCHUYLER, JI Attesting Officer Commissioner of Patent.

F ORM PO-IOSU HO-GS)

Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US3115644 *31 Jul 196131 Dic 1963Bloodworth Henry DBed pan with disposable liner
US3377631 *22 Oct 196516 Abr 1968W G Whitney CorpDisposable bedpan liner
US3418663 *25 Feb 196631 Dic 1968Nathaniel C. ScottDisposable body waste receptacle
GB898903A * Título no disponible
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US3935604 *10 Jun 19743 Feb 1976Collins Robert ASupport device for lifting and supporting patients
US3936890 *6 May 197410 Feb 1976Oberstein NBio-disposable bag-type liner for bedpans and the like
US4010497 *20 May 19748 Mar 1977Philip MenterToilet splash guard
US4136798 *16 Ago 197630 Ene 1979Oberstein NFlushable bedpan bag
US4312085 *18 Ene 198026 Ene 1982Potter Bronson MSanitary waste disposal packets
US4343053 *11 Jul 198010 Ago 1982Connor Nicholas E ODisposable bedpan liner
US4509215 *28 Jun 19839 Abr 1985Lirida PazDisposable liner for a musical potty chair
US4620999 *5 Nov 19844 Nov 1986Imperial Chemical Industries PlcDisposable bags
US4720880 *25 Nov 198526 Ene 1988Barreau Jean PaulProtective lining for toilets provided with seats
US4734941 *13 May 19875 Abr 1988Dewitt Elizabeth MDirects fluid to receptacle without need for body contact
US4828556 *31 Oct 19869 May 1989Kimberly-Clark CorporationBreathable, multilayered, clothlike barrier
US4906495 *21 Abr 19896 Mar 1990W. R. Grace & Co.Laminated articles
US4935969 *20 Oct 198826 Jun 1990Farnsworth Orin JMethod and device for the controlled disposal of human waste
US5033130 *21 Nov 198923 Jul 1991Patents Exploitation Company B.V.Bedpan
US5110390 *12 Oct 19895 May 1992W. R. Grace & Co.-Conn.Oxygen impermeable, melt bondable ethylene copolymer, ostomy bag
US5316688 *14 May 199131 May 1994Ecolab Inc.Water soluble or dispersible film covered alkaline composition
US5429874 *14 Sep 19924 Jul 1995W. R. Grace & Co.-Conn.For packaging caustic materials
US5472518 *30 Dic 19945 Dic 1995Minnesota Mining And Manufacturing CompanyHydrolytic degradation in laundry cycle
US5508101 *30 May 199516 Abr 1996Minnesota Mining And Manufacturing CompanyDispersible compositions and articles and method of disposal for such compositions and articles
US5567510 *30 May 199522 Oct 1996Minnesota Mining And Manufacturing CompanyDisposable products with dispersible microfibers
US5630972 *30 May 199520 May 1997Patnode; Gregg A.Extrusion of flow streams of water-soluble polymer and a hydrolytically degradable polymer through a die to form a multilayer microfiber; articles disposable by laundering
US5763065 *8 Ene 19979 Jun 1998Minnesota Mining And Manufacturing CompanyWater dispersible multi-layer microfibers
US6090472 *31 Dic 199718 Jul 2000Kimberly-Clark Worldwide, Inc.Nonwoven, porous fabric produced from polymer composite materials
US62111294 Jun 19933 Abr 2001Ecolab Inc.Two part chemical concentrate
US64067973 Jul 199618 Jun 2002Cryovac, Inc.Multilayer film
US645548422 Sep 200024 Sep 2002Ecolab Inc.Two part chemical concentrate
US657981425 Ene 199917 Jun 20033M Innovative Properties CompanyHydrolytically degradable polymer where core layer comprises another polymer that is different from the sheath polymer, core polymer may be a hydrolytically degradable polymer or more preferably a water soluble polymer; disposable products
US671314021 Dic 200130 Mar 2004Kimberly-Clark Worldwide, Inc.Latently dispersible barrier composite material
US678382621 Dic 200131 Ago 2004Kimberly-Clark Worldwide, Inc.Flushable commode liner
US679081713 Ago 200214 Sep 2004Ecolab Inc.Two part chemical concentrate
US73005476 Nov 200327 Nov 2007Georgia-Pacific Consumer Products LlcWetting a celluloic web with an aqueous dispersion of wax and emulsifier; fusing the melted wax to provide a hydrophobic surface on the web and so that the open interstitial microstructure between fibers is preserved; a moisture penetration delay of >2 second; napkins; towels; tissues; repulpable
US7392761 *8 Mar 20051 Jul 2008John Arthur KujawaPet dish dispenser with disposable inserts
US751784620 Oct 200514 Abr 2009Ecolab Inc.Inwardly curved bar having an inner opening with an insert interlocking with the bar by insertion into the opening; each part contains a hardener and a source of alkalinity, a surfactant, an enzyme, or an antimicrobial agent; covered with a water soluble or dispersable polymeric film; cleaning detergents
US779916922 Nov 200421 Sep 2010Georgia-Pacific Consumer Products LpMulti-ply paper product with moisture strike through resistance and method of making the same
US784629616 Oct 20077 Dic 2010Georgia-Pacific Consumer Products Lppaper tissue comprising a cellulosic fibrous web, having wax being disposed in the web so that the open interstitial microstructure between fibers is substantially preserved; hydrophobic surface exhibiting a moisture penetration delay of at least 2 seconds; nonabsorbent; microbial barrier
US7847145 *29 Mar 20047 Dic 2010Daio Paper CorporationBody fluid absorbent article
US802576431 Ago 201027 Sep 2011Georgia-Pacific Consumer Products LpMulti-ply paper product with moisture strike through resistance and method of making the same
US812390523 Mar 201028 Feb 2012Georgia-Pacific Consumer Products LpAbsorbent sheet exhibiting resistance to moisture penetration
US821642413 Nov 200910 Jul 2012Georgia-Pacific Consumer Products LpMulti-ply paper product with moisture strike through resistance and method of making the same
US836127816 Sep 200929 Ene 2013Dixie Consumer Products LlcFood wrap base sheet with regenerated cellulose microfiber
US85067564 Mar 200913 Ago 2013Sca Tissue FranceEmbossed sheet comprising a ply of water-soluble material and method for manufacturing such a sheet
US87714662 Jul 20138 Jul 2014Sca Tissue FranceMethod for manufacturing an embossed sheet comprising a ply of water-soluble material
WO1980001374A1 *9 Ene 197910 Jul 1980N ObersteinFlushable bedpan bag
WO1992001556A1 *24 Jul 19916 Feb 1992Bhp Plastics LtdComposite polymeric articles
WO1995024853A1 *13 Mar 199521 Sep 1995James A HawkinsDry toilet
Clasificaciones
Clasificación de EE.UU.4/452, 428/913, 428/486, 428/484.1
Clasificación internacionalA61G9/00
Clasificación cooperativaY10S428/913, A61G9/003
Clasificación europeaA61G9/00P