U.S. patent number 3,828,785 [Application Number 05/272,434] was granted by the patent office on 1974-08-13 for liner for incontinent pants.
This patent grant is currently assigned to Jung Products, Inc.. Invention is credited to Billy C. Clare, Paul B. Gamm.
United States Patent |
3,828,785 |
Gamm , et al. |
August 13, 1974 |
LINER FOR INCONTINENT PANTS
Abstract
A removable and washable liner for incontinent pants in the form
of an essentially seamless flattened tubular sleeve formed from a
porous hydrophobic knitted fabric enclosing one or more layers of
an hydrophilic material, the hydrophobic sleeve acting as a barrier
to prevent discharged body fluids absorbed by the enclosed
hydrophilic material from wicking into contact with the wearer's
body on its inner surface and with the enclosing pants on its outer
surface, yet the liner, due to the porosity and tubular
construction of the sleeve, being readily washable and free from
obstructions which would retain or inhibit the removal of absorbed
fluids during washing.
Inventors: |
Gamm; Paul B. (Cincinnati,
OH), Clare; Billy C. (California, KY) |
Assignee: |
Jung Products, Inc.
(Cincinnati, OH)
|
Family
ID: |
23039780 |
Appl.
No.: |
05/272,434 |
Filed: |
July 17, 1972 |
Current U.S.
Class: |
604/394;
604/397 |
Current CPC
Class: |
A61F
13/64 (20130101) |
Current International
Class: |
A61F
13/56 (20060101); A61F 13/64 (20060101); A61f
013/16 () |
Field of
Search: |
;128/287,288,289,290 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Rosenbaum; Charles F.
Attorney, Agent or Firm: Strasser; Albert E. Melville; John
W. Foster; Stanley H.
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. In a garment for incontinent persons, a unitary liner adapted to
be attached to the inner surface of the garment to extend from
front to rear throughout the crotch area, said liner consisting
essentially of an elongated, longitudinally seamless, porous
tubular sleeve formed from a hydrophobic material, and at least one
layer of a hydrophilic material wholly contained within and
surrounded by said tubular sleeve, said tubular sleeve being in
flattened condition with the layer of hydrophilic material lying in
essentially flat condition within said flattened sleeve and
substantially coextensive therewith, whereby said porous
hydrophobic sleeve permits body fluids to pass therethrough for
absorption by said enclosed layer of hydrophilic material and at
the same time acts as an enclosing barrier effective to prevent the
discharge of the contained body fluids by wicking action even if
the liner is in contact with an outer garment or the like capable
of absorbing such fluids, binding tapes surrounding the opposite
ends of said sleeve and the underlying ends of the hydrophilic
layer, means secured to said binding tapes for detachably
connecting said liner to an outer garment, and stitching extending
through said sleeve and the enclosed layer of hydrophilic material
at spaced apart intervals to prevent the enclosed layers from
twisting relative to the sleeve.
2. The liner claimed in claim 1 wherein said stitching is formed
from thread consisting of hydrophobic fibers.
Description
BACKGROUND OF THE INVENTION
Numerous forms of incontinent pants have hitherto been proposed to
retain discharged body fluids. In their simplest form, such pants
may comprise a diaper formed from one or more layers of a material
which will readily absorb the discharged fluids. Similarly, one or
more layers of an absorptive material have been utilized as a liner
for a garment which is impervious to the body fluids, thereby
preventing the absorbed fluids from wetting the wearer's clothing,
bed-clothing, or the like. In order to prevent the absorbed fluids
from remaining in contact with the wearer's body, it has also been
proposed to surface the side of the liner in contact with the
wearer's body with a hydrophobic material, such a knitted fabric
formed from non-absorptive fibers, which permits the fluids to flow
through the knitted fabric for absorption by the underlying
absorptive material, thereby maintaining a relatively dry and
non-irritating surface in contact with the body.
All of the prior art arrangements are, however, subject to various
disadvantages, particularly in their ability to be washed. For
example, a liner composed of an inner ply of a knitted hydrophobic
fabric and one or more outer plies of an absorptive fabric is
usually formed by wrapping the edges of the plies with a binding
tape and stitching the plies together. Unless a binding is used,
the edges of the plies will readily fray and the stitching will
unravel. Such binding, and even the stitching itself, provide
obstructions which will retain or inhibit the removal of the
absorbed fluids during washing. Since the body fluids provide an
excellent culture medium to promote bacterial growth, complete
removal of the body fluids during washing is essential if
contamination is to be prevented. In addition, such edge bindings
are relatively coarse and hard and hence are irritating to the
wearer's skin, particularly when wet.
It will also be evident that if the liner includes an impervious
outer ply, thorough washing and rinsing is further inhibited by the
impervious material. Consequently, heretofore the various forms of
incontinent pants and their liners have either compromised
washability or have sacrificed fluid containment. If, for example,
an absorptive liner is covered on its inner surface only with a
protective layer of a knitted material which is hydrophobic, the
liner nonetheless wets the surrounding outer garment, with the
result that both the liner and the outer garment must be changed.
Even if the liner is provided with an impervious outer cover, the
absorbed fluids will wick through the edge bindings and wet the
outer garment, again necessitating changing of both the liner and
the outer garment. Usually, where the outer garment is formed from
a liquid impervious material, such as a nylon fabric coated on its
inner surface with a vinyl plastic, the garment will be lined on
its inner surface with a layer of flannel or other material which
will contact the wearer's body; and when wicking occurs, the
flannel lining will be wetted, again posing a laundering
problem.
In contrast to the foregoing, the instant invention provides a
liner which effectively prevents wicking and hence leakage of the
contained body fluid, yet the liner is readily washable with the
assurance of essentially complete removal of urine and other
contained body wastes.
RESUME OF THE INVENTION
In accordance with the invention, the liner comprises an elongated
seamless tubular sleeve adapted to be detachably secured to the
inner surface of the outer garment, the liner sleeve containing one
or more layers of a hydrophilic material extending the full length
of the sleeve.
The tubular sleeve is preferably of a length to extend from the
uppermost front edge of the outer garment to the uppermost rear
edge thereof, and of a width to comfortably pass between the
wearer's legs. The tubular sleeve is in flattened condition and the
enclosed hydrophilic material will be of a width to lie essentially
flat within the confines of the flattened sleeve.
Being in the form of a seamless tube surrounding the enclosed
layers of hydrophilic material, no binding tapes or stitching is
required along the side edges of the liner; and while the opposite
end edges of the sleeve are preferably bound and stitched to close
the ends of the sleeve and bind together the end edges of the
juxtaposed layers, such bindings will lie in the area of the
wearer's waist and hence as remote as possible from the normal area
of containment of the body fluids.
Preferably, the tubular sleeve will be formed from a double knit
woven fabric having a sufficiently open mesh weave to permit the
fluids to readily pass therethrough. Single knit woven fabrics also
may be employed, although the double knits are preferred due to
their increased thickness which increases the barrier forming
properties of the sleeve. Excellent results have been achieved
using knitted fabrics made from hydrophobic yarns, such as olefin,
nylon, Dacron, Orlon, polyester and the like, all of which fibers
provide the desired hydrophobic characteristics. The inner
hydrophilic plies are preferably formed from cotton fabrics, such
as flannel, the so-called double nap flannels being preferred.
Alternatively, the hydrophilic material may comprise hydrophilic
foam, which is a synthetic sponge-like material available in sheet
form.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of a typical outer garment incorporating a
liner in accordance with the present invention.
FIG. 2 is a plan view showing the inner surface of the outer
garment with the liner attached.
FIG. 3 is an enlarged vertical sectional view taken along the line
3--3 of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring first to FIGS. 1 and 2, there is illustrated an
essentially conventional outer garment 1, in the nature of
detachable diaper pants having front and rear body panels 2 and 3,
respectively, interconnected by a crotch portion 4. At their
opposite ends the body panels 2 and 3 are provided with gathered
waistline portions 5 and 6, respectively fitted with interior
elastic bands, and the opposite sides of the crotch forming portion
4 and the adjoining edges of the body portions are also gathered
and provided with elastic bands, as indicated at 7 and 8, to define
leg hole openings 9 and 10, as seen in FIG. 1.
The opposite side edges of the front body panel 2 are bound by
strips of binding material, indicated at 11 and 12; and similarly,
the opposite side edges of rear body panel 3 is provided with
binding strips 14 and 15. Snap fastener elements 16 are arranged at
spaced apart intervals along the opposite side edge of front body
panel 2, and mating snap fastener elements 17 are provided along
the opposite side edge of rear body panel 3, the sets of snap
fasteners, when engaged, forming the body surrounding garment
illustrated in FIG. 1.
The material from which the outer garment is formed does not
constitute a limitation on the invention, although preferably it
will comprise an essentially impervious outer covering 17, as seen
in FIG. 3, formed from a non-fibrous film or from a woven fabric,
such as nylon, coated with a vinyl or other material which renders
the covering impervious to fluids. Such covering may be unlined,
although preferably it will be lined with a layer of flannel 18 or
other soft material which will protect the wearer's skin from
direct contact with the impervious covering. It is to be understood
that numerous modifications may be made in the outer garment
without departing from the spirit and purpose of the invention
which has to do with the liner which is associated with the outer
garment.
As will be seen from FIGS. 2 and 3, the liner, which is indicated
generally at 19, comprises an elongated seamless tubular sleeve 20
which is preferably of a length to extend from the front waistband
portion 5 to the rear waistband portion 6 of the outer garment, as
will be clearly evident from FIG. 2. The width of the liner will be
preferably substantially equal to the width of the crotch 4 when
the liner sleeve is in essentially flattened condition. The liner
sleeve 20 is formed from a seamless tube of a knitted fabric having
an open mesh weave which renders it porous and permits fluids to
readily flow therethrough. Double knit fabrics are preferred due to
their added thickness, although single knit fabrics may be readily
employed. The yarn from which the sleeve is made is of essentially
hydophobic character, being woven from olefin fibers, nylon,
Dacron, Orlon, polyester fibers or the like, all of which are of
hydrophobic character.
One or more layers of a highly absorptive or hydrophilic material,
such as the layers 21 and 22 illustrated in FIG. 3, are enclosed
within the sleeve 20. These layers will be formed from a material
such as flannel, preferably a double napped flannel, or they may be
formed from a sheet of hydrophilic foam, which is a sponge-line
synthetic cellular material. The number of layers of lining
material does not constitute a limitation on the invention and one
or more layers may be employed, depending upon the desired
absorbency.
The layer or layers of lining material preferably will extend the
full length of the tubular sleeve 20 and will have a width
substantially equal to the width of the outer sleeve.
The opposite end edges of the liner are bound and stitched, as
indicated at 23 and 24, so that the inner layer or layers of
absorptive material are joined to the surrounding sleeve. Sets of
snap fasteners, indicated at 25, are provided to secure the ends of
the liner to the waistline portions 5 and 6 of the outer garment.
In order to avoid twisting or "roping" of the inner layers,
particularly during washing, it is preferred to provide transverse
lines of stitching 26 and 27 at approximately the opposite ends of
the crotch area to hold the absorbent layers in place within the
sleeve. Preferably the thread used for the lines of stitching will
be formed from hydrophobic fibers.
As should now be evident, a liner formed in accordance with the
invention provides a self-contained unit in which the absorbent
material is completely surrounded and enclosed within a barrier
sleeve which is effectively free from obstructions throughout its
length which would permit undesirable wicking of contained fluids.
Yet the liner may be readily washed with the assurance that all
contained fluids will be removed. The tubular barrier provides a
non-absorbent and hence essentially dry surface for contact with
the wearer's body, and at the same time the surface in contact with
the outer garment is protected from wetting by the contained
fluids. It will be evident that modifications may be made in the
invention without departing from its spirit and purpose. For
example, while snap fasteners are preferred to secure the liner to
the outer garment, other fastening means may be employed, as for
example, a Velcro type fastener may be used. Similarly, the edge
bindings at the opposite ends of the liner may be secured other
than by stitching, as for example by heat sealing where the nature
of the fabrics permits them to be bonded together. Other
modifications will undoubtedly occur to the worker in the art upon
reading this specification, and it is not intended that the
invention be limited other than in the manner set forth in the
claims which follow.
* * * * *