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Número da publicaçãoUS2575163 A
Tipo de publicaçãoConcessão
Data de publicação13 nov. 1951
Data de depósito5 maio 1949
Data da prioridade5 maio 1949
Também publicado comoDE840081C
Número da publicaçãoUS 2575163 A, US 2575163A, US-A-2575163, US2575163 A, US2575163A
InventoresMarion Donovan
Cessionário originalKennedy Car Liner & Bag Co Inc
Exportar citaçãoBiBTeX, EndNote, RefMan
Links externos: USPTO, Cessão do USPTO, Espacenet
Diaper cover
US 2575163 A
Resumo  disponível em
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Reivindicações  disponível em
Descrição  (o texto de OCR pode conter erros)

NOV. 13, 1951 DONOVAN 2 ,575,163

DIAPER COVER Filed May 5, 1949 5 Sheets-Sheet 1 FIG. I FIG. 2


M. DONOVAN Nov. 13, 1951 DIAPER COVER Filed May 5, 1949 3 Sheets-Sheet 2 INVENTOR MARION DONOVAN M11 M ATTORNEY.

M. DONOVAN Nov. 13, 1951 DIAPER COVER 5 Sheets-Sheet 3 Filed May 5, 1949 INVENTOR. MARION DONOVAN By M 2'4 M ATTORNEY.

Patented Nov. 13, 1951 DIAPER COVER Marion Donovan, Saugatuck, Conn., assignor, to Kennedy Car Liner & Bag 00., Inc., Shelbyville, Ind., a corporation of Indiana Application May 5, 1949, Serial No. 91,536

9 Claims. (01. 128-287) The present invention relates to a new and improved waterproof and leakproof diaper cover.

For maximum health, diaper covers must not interfere with the circulation of the infants blood and should permit free circulation of air. It is also desirable that there be a minimum of contact between the babys skin and the wet diaper. For sanitary reasons the diaper cover must be capable of easy and thorough cleansing. Also, the cover should be adjustable in order to take into account the babys natural growth and to permit the application of either one or several diapers at the same time. Finally, the cover should be such as to make it possible to diaper and waterproof the baby in one operation.

Various accessories have previously been used with diapers in an attempt to accomplish these objects but all have been unsatisfactory. Rubber sheets and mattress covers entail additional work and do not prevent the baby from soiling his own clothes and bedding or the clothes of any one holding him. Rubber and plastic pants are highly unsatisfactory, for these rely on constriction in order to prevent leakage; there is usually an elastic about the babys waist and legs, but this must be very tight, particularly about the legs, if the pants are to be at all effective. Such pants cut oil ventilation, cause excessive chafing and frequently interfere with the circulation of the babys blood. Furthermore, such pantstend to press the wet diaper against the babys body and by forcing him into close contact with it, they frequently cause irritation of the babys skin. Diaper covers that retain the diaper between flat folds or overlaps have also been used, but these are not entirely satisfactory because of a tendency of the cover to unfold or of the overlap to buckle outward at the fold between the infants legs and so permit leakage at this critical area.

The new and improved diaper cover herein disclosed provides a waterproof and leakproof cover which will retain moisture within its own confines and prevent the baby from soiling its other clothing and bedding and the garments of those holding the baby. Furthermore, it will not interfere with the babys circulation or with ventilation. Nor will it force the wet diaper against the babys skin, and in fact it will protect the baby from contact with much of his own wet diaper. It is easily cleansed, is adjustable to different sizes and can be applied with the diaper in one operation.

,All of these features and advantages are provided in the present invention, which may, in one embodiment, be described as a diaper cover of waterproof material generally rectangular in flattened position; Fig. 5 is a perspective view of the diaper cover in operating position;

shape and having a flap at either end and a vertical sidewall of arcuate shape at either side with a side flap attached to each sidewall. Each flap is secured along one edge only and so is free along three sides. Thereby the flaps are capable of opening outwards for the positioning of a diaper upon the inner face of the backing sheet and of.

folding inwards to cover the edges and the side and end portions of the diaper and to retain the diaper upon the backing sheet against lateral displacement. At the end portions of the back ingsheet, which will be about the babys waist when the-cover with its inserted diaper is in use, there are several sets of fastening means, such as Snaps or hooks and eyes, or merely an area for pins, in order to make the diaper cover adjust able as to size and to provide for the infants growth and permit the use of either one or several diapers at the same time.

Other features and advantages of the invention will be apparent from a consideration of the full detailed specification with reference to the draw;- ing illustrating a preferred form of the invention to which: Y

Fig. 1 is a plan view of the diaper cover in a flattened condition, showing the inner surface thereof;

Fig. 2 is a plan view of the diaper cover showing the outer surface thereof;

Fig. 3 is an elevation along lines 33 in Fig. 1 showing the arcuate sidewall in a vertical position;

Fig. 4 is a sectional view along lines 4-4 in Fig. 1 showing one side flap and sidewall in a partially Fig. 6 is a broken plan view of the diaper cover showing the outer surface thereof and alternative fastening means;

Fig. 7 is a view of one side portion of the diaper cover in operating position showing the alternative fastening means shown in Fig. 6 set for maximum size, both vertically and horizontally;

Fig. 8 is another view of one side portion of the diaper cover in operating position with the alternative fastening means shown in Fig. 6 set for minimum size vertically and maximum size horizontally.

Fig. 9 is a plan view of an alternative form of diaper cover in a flattened condition, showing the inner surface thereof.

Fig. 10 is a plan view of said alternative form of diaper cover in a'flattened condition, showing the outer surface thereof.

Referring now to the drawings, the diaper cover is, in the illustrative embodiment, made throughout of a soft pliable waterproof material. I prefer to use a plastic material of, for example, a vinyl resin type, but while there are particular advantages for this material, other materials such as rubber or waterproofed cloth may be used. The backing sheet [4 'inay be of generally rectangular shape but in the preferred form of my invention, as illustrated in Fig. 2, I prefer to make the middle portion of backing sheet H, which will pass between the infants legs when the diaper is in use, narrower in width than the end portions thereof which will be secured about his waist. The backing sheet thereby approximates in outline the cross-sectional shape of an hour-glass.

At each end l2 and I3 of backing sheet if there. is provided a flap, M and I respectively, o f the same pliable waterproof material. Each of these flaps l4 and I5 may be merely a part of backing sheet ll folded backupon, itself, but. there are particular advantages in using separatepieces of material affixed thereto by stitching or other means along the outer edge portions of said flaps. In the preferred form of my invention, using plastic as the material, I prefer to use separate pieces of plastic for these flaps and to make these and all other connections by heat sealing or byelectronic seaming. In the preferred form as illustrated in Fig. l, I have shown each end flap shaped in the form of an isosceles trapezoid, but while there are particular advantages from using this shape, these end flaps can be of any suitable shape. The sides and inner edges of flaps M and I5 are free; that is, they are not secured in any way. Therefore these flaps may be folded back for easy insertion of a diaper and for cleaning the cover. In Fig. i, one corner of flap i4 isshown in such folded back position.

A side flap also of the same material is provided for each side of backing sheet; H, but these side flaps I! and 18 are secured thereto in a different fashion than are the end flaps M- and i5. One edge of each side flap I! and i8 is attached to one edge of avertical arcuate sidewall, and is respectively. Each sidewall is affixed perpendicularly along its opposite edge to the opposing side portions ofbacking sheet H, thereby securing said sideflaps l 1- and; 18 to the backingsheet H but separating said sidefiaps from said backing sheet. These sidewalls I9 and 20 are arcuate in shape, as illustrated in Fig. 3, where sidewall l9- is shown in a position perpendicular tosaid backing sheet I l. Eachsidewall l9 and comprises an elongated strip of soft pliable waterproof material, the long boundaries or edges of which are curved in the samedirect-ion, one

boundary being. convex and, the boundary oppositethereto being concave. Each said sidewall I 9 and 20 is affixed along its convexly curved boundary. to. backing sheet Ll along themespective. side. portions of' said. backing sheet and. per pendicular thereto. Because of thepliability of the material, whenithebacking sheet is laidfiat these, sidewalls. assume the. partially. flattened position.shown for sidewall (9. in Fig. 4; How.-.. ever, whenthe backing-sheet is. curved upwardly at either end; in a manner, approaching. the

actual operation position of the diaper cover, the

ver i al; position of these arcuate sidewalls; l9

and 2D; is apparent; as, is, shown in Fig. 3", where the sidewall is shown perpendicular to. backing.

sheet ll... Both; sidewalls l.9.and.'2li are. identical in shape and although a generally. catenary. curve for such sidewalls is showninFig. 3, itlmust be understood that I do not propose to limit myself to this particular curve, which is only illustrative of the fact that these vertical sidewalls have two long boundaries curved in the same direction with the convex boundary joined to said backing sheet. The degree of curve may be considerably increased or even somewhat decreased without departing from my invention. Having sidewalls of this vertical arcuate construction prevents the side flaps from opening or buckling outwards and so permitting leakage when the cover containingadiaper is applied about the infant as in the position shown in Fig. 5.

Also, these sidewalls l9 and 28 need not be of the same width, throughout their entire length but, if desired, they may taper slightly toward th ir e ds! The side flaps H and it may be of any suitable shape but there are certain advantages to be derived from the preferred form of the invention illustrated in Fig. l, where I havev shown a side flap of generallyrectangular outlinebut having its two long opposing sides unequally concave,

the edge afiixed to the sidewall being less concave This formation of. the, side flap permits it to conform when operating than the opposite edge.

position to the general hour-glass shape ofthe.

backing sheet'and also to leave exposed a convex area of the inserted diaper, with the exposed area widest at its middle portion upon which the. baby Will Wet.

For the insertion of a diaper, the diaper cover is placed as in Fig. l, but in an unfolded condi tion with the end flaps H2 and i5 and the side flaps I! and It! opened outwardly. Gne or more: diapers are folded to fit and are placed on the diaper cover with the diaper soretained and partially covered is then passed between the babys legs and about his body in the same manner in which diapers are usually applied-.- lnthe preferred form shown in Figs. 1, 2 and 5-, the" diaper cover and inserted diaper is secured about thebabys waist by means of snaps- 2-3.- Other adjustable fastening means could also beused such as books and eyes or ordinary safety pins.- 1

As shown in Figs. 1, 2 and 5; several snaps 23' are arranged horizontally on the backing sheetif and end flaps I l and 15 inorder topermit differenthorizontal adjustments to make allowancefor the growth of the baby and to permit the use of either one orseveral diapers at the same-time, For similar reasons, another set of snaps 24* are arranged vertically on the backing sheet H and the end flaps l4 and I5 to permit vertical adjustments. positioned on the side flaps in order to decrease the size of the leg openings if desired.

As is apparent from Fig. 1-, the end flaps M and I5 and the side flaps l1 and IB- are arranged to leaveexposed the inner face of that-part-of the diaper on which the baby will wet-but to cover the This per end and sideportions of the diaper. mits the flow of liquid throughout-the diaper innormal fashion to utilize the entire. diaperfor' absorption, but. the area of'wet. diaper which can be in contact with the babysskin islconsiderably:

limited, thus decreasing. thepossibility ofrskinir'e ritation; aswell asthe area of thebabyls skin which may be so affected. Because of the curved"- construction of sidewalls l9: and 20 saidfl'aps-{l land lg do not-buckle-outward at the midpoint-of Also, additional snaps 25 may 3 be the sides when the diaper cover with the diaper insertedis placed about the baby; therefore leakage is prevented and all moisture is contained within the diaper cover and cannot soil the babys other clothing and bedding. Nevertheless this curved sidewall construction permits a large free opening for the infants legs without any restriction whatsoever and insures proper ventilation at the same time that it prevents leakage. Also, this looseness prevents the diaper from being pressed against the babys body and the cover actually suspends the diaper below the baby.

Furthermore, if the babys shirt is attached to the diaper cover at the waist it will not be soiled by the boby when he wets as is customarily the case. There will be no need to completely dis.- robe the infant to put on a dry shirt every time there is occasion to change diapers and as a result there will be less danger that the infant will catch cold.

Since the diaper cover is capable of being opened out completely, it is susceptible of a thorough washing in an unfolded condition and lends itself to being cleaned by wiping with a damp antiseptic cloth, or by a simple rinse, for there are no crevices, cracks or corners to retain dirt.

As can be seen from the forgeoing, my new and improved diaper cover makes it possible to diaper and waterproof the baby in one easy operation without the requirement of any other accessories. It provides a healthy and practical means for confining moisture within the diaper cover and away from the babys other garments and his bedding and the persons holding him. It will interfere in no way with the babys circulation or with proper ventilation. At the same time it decreases the area of the wet diaper which will be in contact with the babys skin and so minimizes the possibility and extent of skin irritation.

Figs. 6, 7 and 8 show an alternative means by which the diaper cover may be secured in an adjustable manner about the babys waist. Instead of the series of snaps 23 and 24 shown in Figs. 1, 2 and 5, the alternative means of hooks and eyes may be used. One end portion of the diaper cover may be provided with hooks 30 one of which is afiixed at either side thereof. These hooks may be attached directly to the backing sheet I l but I prefer to secure each hook to the backing sheet by means of a piece of elastic cloth 3 I. One such piece of said elastic cloth is attached to the outer face of the backing sheet at each side of an end portion, and it is aflixed thereto by stitching or other means at each end of the elastic, thus providing additional adjustability. Each hook 30 is adapted to engage eyes 32 set at each side of the other end portion of the backing sheet on the outer face thereof. These eyes 32 may be all the Way through backing sheet I l, in which case the end flap should be ailixed to the end portion of the backing sheet inside of the eyes 32 in order to preserve the waterproof and leakproof integrity of the diaper cover. However, I prefer to have the eyes set in an additional piece of material 33 afiixed to the backing sheet and as illustrated in Figs. 6, 7 and 8. Since this separate piece 33 can be thicker and stronger than the rest of the diaper cover to take the strain of the hooks, I am enabled to use a very light and pliable material for-the cover with less likelihood of tearing, for the principal strain occurs at these points where the fastening means are secured. A second series of eyes, also set in a separate piece of heavier material 34, is provided in order to give vertical adjustment of the diaper cover. Fig. 7 shows one such alternative fastening means set for maximum adjustment both vertically and horizontally. Fig. 8 illustrates the same alternative fastening means but now adjusted for maximum size horizontally but minimum size vertically. By having the eyes set in separate pieces of material, 33 and 34, I am enabled to use a simple fold of backing sheet II to form the end flap at this end portion of the backing sheet. This end flap is shown in an unfolded condition as 35 in Fig. 6. In Fig. 8 that portion of the backing sheet in which piece 33 is afiixed is folded in, thus increasing the depth of end flap 35. However, this is not absolutely necessary for the hook 30 could simply be engaged with any eye set in piece 34, leaving that portion of the backing sheet upon which separate piece 33 is set simply projecting above the babys waist.

An alternative arrangement of securing the end flaps l4 and I5 is available and is shown in Figs. 9 and 10. In addition to securing said end flaps along one boundary thereof to said backing sheet I I as described earlier herein, the end flaps l4 and I5 may be secured along the opposite boundary thereof or thereabouts to the side flaps l1 and [8 where said end flaps overlap said side flaps in Fig. 1. This is shown by dotted line 33 in Fig. 9. If this is done, said side flaps l1 and I8 may be somewhat shortened at each end thereof beyond said lines of connection with end flaps l4 and IS in order to provide openings 31 for the easy passage of soapy water or other cleansing fluid when the diaper cover is being cleaned by rinsing, for it will be noted'that although the end flaps and the side flaps are so connected at 36, there is no connection at these points of said end flaps and said side flaps with said backing sheet II. It will be found that such passages 31 may exist near the corner portions of the diaper cover without causing the diaper cover to permit leakage when in use. When so secured, the flaps do not unfold and the diaper is now inserted'by slipping its end and side portions under the end and side flaps respectively. This alternative arrangement is particularly useful to maintain said end flaps l4 and I 5 in an inwardly folded position when the diaper cover is in use despite all the wriggling and squirming of the most active infant.

.While certain preferred forms of a diaper cover embodying the present invention have been described in considerable detail, it will be understood that numerous changes and variations may be made in said diaper cover without departing from the general principles and scope of the invention. Matter disclosed but not claimed herein is claimed in my copending application Serial No. 99,096, filed June 14, 1949, which is a continuation-in-part of subject application.

I claim:

1. A diaper cover comprising a backing sheet,

longitudinally arcuate sidewalls attached along one edge thereof along opposing side portions of said backing sheet, and side flaps attached along the opposite edge of said side walls, all of soft pliable waterproof material.

2. A diaper cover comprising a backing sheet of soft pliable plastic of a vinyl resin type, longithe same material; having; two longandtwo short.

boundaries, the longboundalties, of; said sidewalls being curved. in. the same-dire tion, one; s c

.4. A diaper covercomprisinga backing sheet.

of softpliable waterproof material, sidewallsof thesame material having two longandtwoshort, boundaries, the .long boundariesof said sidewalls being curved. in the same, direction, one such bundary being convexly and the other such boundary concavely curved, each said sidewall being joined along its convexly curvedboundary tqsaid backing sheet along aside portion thereof, side. flaps of the same. materialjoinedto said. sidewallsalong the concavely curved boundary of each said sidewall and end flaps. of the same material afiixed to said backing sheet along the end portions thereof, said. end flapsand said side flapsadapted to. fold inwardlyupon. the .end and side portions of, a. diaper disposedupon said backing sheet. and partially cover the same.

5. A. diaper cover comprising. a. backing sheet, vertical arcuate sidewalls havingtwolong boundaries curved in the, same direction, one said boundary being, convex and the. oppositebounda ary' concave, end flaps and side, flaps, all. of soft.

pliable, waterproof material, one of said endflaps being. afiixed along oneedgg, thereof along. one. end portion of, said sheet. and another said end flaps being similarly attached to the. opposing end portion ofsaid sheet, one of said vertical arcuate sidewalls being afiixed along the convex. boundary thereof along one; side portion, of said sheet and another said sidewall, being similarly attached. to.

the opposing side portion of said. sheet, one of;

said side flaps being affixed along one. edge thereof along the concave boundary of ,.a.said

sidewall and another said sidefiap being similarly attached to the opposing sidewall, said end and side flaps being adapted to fold inwardly to cover. the end and side portions of a diaper disposed upon said backing sheet.

6. A diaper cover comprising a backing sheet, longitudinally arcuatesidewalls, end...flaps and side flaps, all of soft, pliable waterproof materi'al said-backing sheet being of rectangular outline having twoopposing sides cono'avaa longitudinally areuate sidewall being affixed along, oneedge thereof along one concaveside portion of said sheet andanothersaid sidewall being. similarly affixed to theopp'osingside. portion of; said; sheet, asaid endfiap'being affixed along .one'edge;

thereof, along one endportionoi said sheet and another said end flap beingsimilarly aiiixed to theopposing end portionoil said sheet, said side flaps being of rectangular outline having oneside thereof; concave, asaid side .flap, being, aflixed along the edge opposite itsconcav' side along the edge of a said sidewall opposite to the edgeofg said sidewall affixed to said backing sheet and another side flap being similarlyattached to the I opposite side wall, said end. and side flaps being;

adapted, to, fold inwardly upon the end and side POrtionsof a diaper disposed upon said sheet. a

7. A diaper cover comprising a backing sheet of soft pliable waterproof material, longitudinally arouatesidewalls of the same material ailixed along one edge thereof along the side portions of said backing sheet, flaps of the same material afiixed along-one edge thereof along the opposite edge ofsaid sidewalls, and adjustable securing means at the end portions of said backing sheet for adjustably securing said end portions. about the waist of aninfant when said sheet is passed 9. Adiaper cover comprising a backing sheet" of soft pliable waterproof. material and having wo. co cav ppo n s d o ndaries, s ewa ls of thesame material, each said sidewall having twolong boundaries curved in the same direction one said boundarybeing convexly curved and the opposing said boundary being concavely curved; each ,said sidewall being joinedalong said convexly curved boundary to said backing sheet along the, concave side portion thereof, side flaps of the same material, each said; side flap being joined along one edge thereof to a said sidewall along the concavely curved boundary of said sidewall, end flaps of the same material joined along one edge thereof along the end portions of: said backing sheet, said end flaps and said sidefiaps adapted to fold inwardly upon the end and side portions of a diaper'disposed upon said backing sheet and to partially cover the same, adjustable fastening means positioned at each end of said backing sheet at the side portions thereof to adjustably secure the ends of said diaper cover about the waist of an infant when said diaper cover is passed in an operative position between the legs ofsaid infant.


REFERENCES CITED The-following references are of record in, the file-of this patent:


Citações de patente
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GB606320A * Título indisponível
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Classificação nos Estados Unidos604/394, 604/397, 604/401
Classificação internacionalA41B13/04, A41B13/00
Classificação cooperativaA41B13/04
Classificação europeiaA41B13/04