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oct. 1, 1946.
Jjp. CANAVAN
2,408,508
NON-CHAFING CATAMENIAL PAD
Filed Dec. ` 1, 1942
"
4 Sheets-Sheet l
maw/M
04ML
Aly/7A APF/@Araki
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Oct. l, 1946.
y2,408,503
ÍJ. P. cANAvAN '_
NON-CHAFING CATAMENIÁL PAD
. Filed Deo. l, 1942
4 Sheets-Sheet 2
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_Oct ,1, 1946-
J. P'. CANAVAN- ‘
2,408,508
NON-CHAFING‘ CATAMENIAL PAD
^ Filed Dee.l 1, 1942
n*
4 sheets-sheet 4
Jahn”. ¿'ázzdawg
Patented Oct. 1, 1946
2,408,568
UNITED STATES lßrrrElSrrv OFFICE
Y Application December 1, 1942, Serial No. 467,491
3 Claims.
’
1
"
(Cl. 12S-290)
2
_
This _application is a continuation-impart of
my application Serial No. 263,596 filed March 23J
1939, and entitled Nonchaflng catamenial pad
which in turn is a continuation-impart of my
earlier liled application Serial No. 236,675 filed
October 24, 1938, and Yentitled Catamenial pad.
This invention relates to catamenial pads and
more generally vto ‘sanitary bandages to be worn
gravity. I have also found by actual tests and
the study of the female anatomy that it is un
necessary for the pad to extend beyond the rear
end of the Derineum'or to be of too great a width
at this point because of the natural relations.
On the basis of this knowledge I have devised a
catamenial pad, which is a radical departure
from conventional pads now in universal use but
f by women during the menstrual period or by
which provides the same degree of safety as said
those subjected to vulva, vaginal, or uterine dis-`> 10 conventional pads, and at the same time elimi
charges.
j
'
'
l
At thepresent time .'(and for a great many
years in the past) the most common form of sani
cessive bulk of said conventiona1 pads.
'
According to the principles of the present infA
tarypad or napkin commercially available for use
vention, the absorbent pad is given a predeter
by women during the menstrual period consists
mined shape such that it substantially conforms
of a generally oblong, arcuate ended pad of ab
sorbent material enclosed in a sheet of loosely
woven gauze. These pads are of standard di
the body inthe region of the female genitalia
mensions, approximately 9 inches longrand 3
`
nates al1 chañng and discomfort due to the ex
in contour with the natural anatomical curves of
comprising the thighs, buttocks andperineum
parts;
Furthermore, the pad is considerably
inches Wide' for adult use (the “junior” size being 20 shorter than conventional pads land is made ofk >
slightly smaller). In view of their configuration
such length that it is adapted to be worn with its
and width such pads inherently cause consider
rearmost region terminating at the anal aperture
able discomfort to the wearer, and very often
and its forwardy region terminating at a‘point
chañng, due to the fact that they must be worn`
slightly beyond the mons Veneris'.
laterally compressed, or “bunched,” or “packed”
The principal advantages of the present inven
between the thighs. Moreover, due to theirI
tion,
obviously, are two-fold. First, all discom
length, theyY extend rearwardly of the rectum a
fort tothe wearer from the pad per se is definite
considerable 'distance and produce a “wad” at the' Y
ly eliminated, and, secondly, the pad can be man’
rectum whichfcreates a source of continuous dis
ufactured at a substantial saving due to the fact
comfort, particularly when the wearer is seated.
that at least 30% less absorbent material is re
This wad not only causes discomfort, but dise
quired. Additional and commercially important
torts the natural anatomical relations around the
advantages arise from the'fact that less gauze
vulva and anus. These disadvantages have long
is required to wrap the absorbent pad, smaller
been known and tolerated because they were
thought to be inescapable. It is true, that long
cartons may be used in shipment and the
recognition of the problem has brought forth
numerous suggestions and variations in sanitaryV
napkin construction but none of these has been
to the smaller weight and bulk of the product.
Still greater economy can be effected by eliminat
commercially adopted toY supplant the well
known, conventional form of catamenial pad.
The above mentioned width and length of con
ventional catamenial pads and their customary
manner of being worn have been predicated upon
the belief that it is essential to have a substan
tial portion of the pad extend rearwardly of the
rectum in order to absorb the material discharged
from the uterus, etc., it being thev common and
generally accepted belief that the discharged ma
terial
travels ' downwardly
and
rearwardly
through the pad by gravity. `I have discovered f that, contrary to thek foregoing generally ac
cepted belief, the absorbing action of the pad is
such that it causes the discharged material to
travel forwardly and upwardly by capillary ac
tion rather than downwardly and rearwardly by 5a
shipping costs themselves materially reduced due
ing the gauze altogether, as will appear more fully
_ hereinafter.
Another novel feature of the present catame
nial device isvthe incorporation therein of a sup
porting strip of predetermined ,width which ex
tends longitudinally ofl the absorbent pad along
the lower side thereof and which is adapted to
maintain said pad laterally substantially flat and
thereby prevent roping and twisting of said pad.
In» one formv of the invention the pad and sup
porting strip are enclosed in a gauze sheet or en
velope, and in accordancewith another form of
the invention the longitudinal edges of the gauze
sheet are so overlapped as to provide in effect a
“built in” longitudinal band rendering the use of
a separatefsupporting strip unnecessary.
'
A further rfeature of the invention resides in
2,408,508
3
substantially along line G-S of Figure 5;
Figure 7 is a plan view of the catamenial de
catamenial pad.
A still further feature resides in the provision
of an improvement in catarnenial pads to render
such pads non-chañng even during body move
vice shown in Figure 5, except for the gauze en
velope which is opened to expose the absorbent
pad normally confined therein;
Figure 8 is a diagrammatic, dimensioned, view
ments caused by walking that normally results
in chañng caused by friction with the natural
anatomical curves of the body in the region of
the female external genitalia comprising the
thighs, buttocks, and peri-anal parts.
The principal object of the present invention is
4
Figure 6 is a transverse sectional View taken
improved moistureprooñng of certain parts of the
of a commercially feasible absorbent pad element
for adult use, shown superimposed upon a con
. .4 C
to provide a catamenial pad which will eliminate
all discomfort to the wearer.
Another object of the invention is to improve
the construction of catamenial pads by providing
features that preclude chañng to the wearer.
Another object is to provide a catamenial pad
ventional pad element to facilitate comparison
in size and shape;
Figure 9 is a top plan View of a modified em
bodiment of the catamenial pad shown in Figure
5 with the bottom gauze sheet of the envelope
opened to clarify the showing of a moisture
proof lower region to prevent striking through;
Figure 10 is a transverse sectional view through
a pad of the type shown in Figure 9;
Figure 11 is a plan view of a catamenial device
having
the enclosing gauze sheet so folded along
20
anatomical curves of the body in the region of
the
underside
vof the -pad as to eliminate the use
the female external genitalia comprising the
of the supporting strip shown in Figures 5 and 9;
thighs, buttocks and perineum occurring in the
Figure 12 is -an exaggerated cross-sectional View
relatively changing positions of the body occa
of only the gauze sheet of Figure 11 illustrating
sioned in walking and other movements.
one manner in which said gauze sheet may be
Still another object is to provide a catamenial
folded to provide a plurality of layers of fabric
pad with a non-chai'lng finish affording the wear
at the underside of the pad adapted to serve as
er increased comfort through the elimination of
a substantially non-stretchable supporting band;
skin iniiammation in the contact regions of the
Figure 13 is a view similar to Figure 12 illus
female external genitalia, thighs and perineum.
A further object is the provision of a cata 30 trating another manner of folding the gauze
possessed of improved non-chañng features to
eliminate frictional edge contact with the natural
menial pad envelope compositely incorporated
with a moistureproof substance to afford smooth
sheet;
Figure 14 is a dimensioned plan view of a
slightly modified form of pad element;
non-chañng contact with the adjacent contour
Figure l5 is a view of the lower side of another
of the female parts and thus afford greater phys
e: Ul pad construction embodying the principles of the
ical comfort.
present invention in which the gauze wrapper is
A still further object is the provision of a
only of slightly greater length than the absorb
catamenial pad envelope compositely incorpo
ent pad and in which the supporting strip or
rated with a moistureproof substance that pre
band is adhesively secured to the pad;
cludes the possible striking through of the men
Figure 16 is an enlarged view of the absorbent
strual flow under conditions that are sometimes 40
pad and'gauze wrapper shown in Figure l5;
beyond the control of the wearer.
Figure 17 is an inverted sectional view taken
Still a further object is the provision of a
on the line ll-H of Figure 15 and illustrating
sanitary catamenial pad envelope compositely
by exaggerated thicknesses the relationship of
incorporated with an impervious substance to
the overlapping edges of the gauze wrapper, and
prevent uterine discharge from striking through
the relative positions of the adhesive material
the absorbent cellular pad which may consist of
and the supporting strip before the parts are ad
less material than heretofore thought necessary
hesively bonded by heat and pressure;
and is conducive to even greater comfort with
Figure 18 is a plan view of another embodi
increased absorbent effectiveness.
An additional object is to provide a catamenial fit ment of the invention wherein the gauze wrapper
pad envelope compositely incorporated with a
moistureproof substance to prevent menstrual
excretion from striking therethrough and pro
vide non-chafing body contacting surfaces con
ducive to added physical and mental comfort of
the wearer.
Other objects and advantages will appear from
the following description taken in conjunction
with the accompanying drawings in which:
Figure 1 is a diagrammatic, dimensioned,
cross-sectional View of the female pelvic region
showing the uterus, vaginal canal, etc.;
Figure 2 is an elevational view of the external
genitalia;
Figure 3 is a dimensioned, plan view of a pre
ferred form of pad element, the dimensions given
being such as to include a satisfactory range for
“junior” as well as “regular and super” size pads;
Figure 4 is a diagrammatic view illustrating
the manner in which pad elements of the type ”
shown in Figure 3 may be cut from sheet or strip
material in mass production;
Figure 5 is a top plan view of a complete cata
menial device having non-chafmg edges embody
ing features of the present invention;I
is entirely dispensed with;
Figure 19 is a sectional view taken on the line
ila-I9 of Figure 18; and
Figure 20 is a view similar to Figure 19 but
illustrates a further modification in which the
adhesive material is extended around the side
edges of the pa-d to present non-Charing surfaces.
The catamenial structure selected for illustra
tion comprises a preformed pad HJ or a plurality
of superposed pads I9, in this instance, three,
preferably stamped or otherwise shaped from
cellular or other highly absorbent material. In
the preferred embodiment, the pad or pads l0
are preferably though not essentially provided
“ with an enlarged forward end region Il that ap
proximates the width of the standard c-atamenial
pad l0" (Figure 8), the forward end region ll
terminating, in this instance, in a curved edge
l2 imparting a semicircular contour which merges
into converging side edges i5 and I4. The in
clined converging side edges i3 and I4 extend
for a distance to define a comparatively smaller
rearward end region I5 which, in this instance,
terminates in a semicircular rearward end i6.
A trapezoidal region I5’ connects the end regions
234083508.
5
Ilyand I5. fThef-rearward'regions I5’ and 'I5
portions I2'and'I6 of the pad. A machine (not:
are shaped' to conform more. nearly to tthe'an
shown) ' is adapted to quickly stamp out the pad
atomical 'contour ` of l the external' genital region,
elements I0 :from the strip X so thatthe ad--
and "avoid undesirable roping,- twisting :and
packing..v
' ï.
'
jacent padsare reversed, that is to say, the wide
5
. '
Inf'Figure' 1, the various >portions ofthe female n
end region ~ II of one pad is adjacent the narrow
end region I5 of the next pad, and vicel versa.
pelvic region ’ are diagrammatically shown «in
In order to support the absorbent pad or pads
I Il in~ operative position over the female genitalia
“Vagina canal,”` “Bladder,” ï‘f‘Rectum,” “Labia
between lthe thighs and buttocks, an elongated
minor-a,” “Labia'majoraj’ etc., to illustrate `rthe 10 supporting 'strip lI'l (Fig. 5) of material ' pos'
course of the menstrual flow from where it or-v
sessing‘ appre'ciably' greater tensile strengthy than
iginatesëin the uterus.V Thus, the flow is, down-L
the absorbent pad or -pads l0 and preferably of
cross-section and respectively labeled “Uterusjî`
wardï through-the uterus, then downward and
forward through the'vaginal can'aL‘and then out
moistureproof material, is disposed longitudinally
therebeneath'and projects therebeyond for a'dis
between the labia onto the'pad, where, capillary 15 tance'suiîlcient to be looped through or engaged
action normally causes the discharged'material
bythe forward and rearward end members of the
to travel upwardly,'instead of downwardly, con
trary to the> previously accepted theories on this
subject.' Figure 1 also diagrammatically illus
usual or any suitable or' standard sanitary belt
appliance (not shown) worn for that purpose.
The »elongated narrow striprll' may be cut or
trates average dimensions from the recturnto theV 20 otherwisev shaped 'from paper, closely woven
mons Veneris as determined from many actual
fabrics, or non-absorbent sheet material such as
measurements of the'female vulva. An inter
rubber, C'ellophane, Celluloid, treated fabrics or
estingl conclusion from -the many measurements
paper -and ordinary fabrics impregnated with
made vis that the size of the female genitalia
does not vary in direct'proportion to the size
of the individual during the'child bearing period
vm'oistureproof substances such asparañine, wax,
A, rubber, Celluloid or a combination of these sub
stances. >A suitable substancefor this purpose
is sold by YThe Menasha Products Co., Menasha,
of a woman’s life. As shown in Figure 1, the
over-al1 distance' from the anus or rectum to
the mons Veneris over the outer curved surface
Y Wisconsin, under the trade name of “Paraiilm,”
the anus to the fossa'navicularis is about 11A
inches, from the fossa navicularis to the clitoris
supporting strip i1 preferably is of a lesser width
than the enlarged forward end II of the pads
the wrapper of which bears the following patent
of the vulva is approximately 5 inches. -»The dis-` 30 numbers: 2,054,112, 2,054,114, 2,054,115, 2,074,
tance in a straight line, or‘in projection, from
319, 2,075,927, and 2,077,299. The longitudinal
is about. 2 inches,.and from 4'the clitoris tothe
l0 and no 'greater or approximatelyequal in
mons Veneris is'about 11/2 inches. Hence, in
constructing pads embodyingv the principles of the
present invention, the pad isi madel sufficiently
in excess 0f 5 inches, say 6to 71/2.inches, to
width to the rearward end I5.` Thus, the strip
Il forms a support underlying the major por
tion ‘of the area ofthe pad `I0 to prevent roping
and‘twisting of the pad in use. The provision of
adequately-cover the parts.
the longitudinal strip yI'I of moistureproof ma
"
'
.
n
~
Referring now to Figure`2, the measurements 40 terial serves not only to afford added support for
of the vulva, from side to side, is approximately
absorbent pad'or pads I0 in operative position,
1/2 inch> in the posterior faucet, about 11A inches
but also prevents the' Astriking through ofV -uterine
at the vaginal "opening, `about 2% inches at the
discharge to the down side of a fabric envelope
clitoris, and about 2 inches at `the mons Veneris.
These measurements are taken from the outer
margin'of one .labia majora to the outer margin
of the, other, and serve as the .basis :for deter#
I8 serving as a covering therefor.
To this' end, a large -mesh fabric sheet such
as gauze I8 of substantially rectangular con
of this’ portion of-the padl may be made any
ñgu'ratiornf is 'folded aroundV the pacl'or pads I0
and theirv longitudinal supporting strip I'I to
constitute 'an _overlapping rectangular envelope
therefor. Y"Thegauze'envelope I8 is, in this in
stance,` commensurate in length with the strip
I'I `and provides extensionsv I 8“ and I8b adapted
to be attached to the usual sanitary belt fastener
members (not shown) in conjunction with the
where from 21,41 to 3 inches. The radius ofthe
substantially semicircular rear region I5 of the
pad' I0 is indicated as varying from 1/2 to 1 inch
ends >of the narrow strip I'I so that the envelope
I8 serves to maintain the pad »or pads I0 to
gether with the strip I1 in their initial assembled
mining the Vwidth of the rearward region of the
absorbent pad.
f
v
,
.
'~
'
«Upon referenceto Figureß it will be noted
that the wide substantially’ semicircular front
region II of the pad Ill‘may be formed upon
a radius of 1?/8 to 11/2 inches >`so that' the width
so that the width of said rear end regionfmay
relation'. zThe longitudinal side edges Iii-28 of
vary from'l to 2 inches. The front and rear
the gauze envelope I 8 will span the pad or pads I0
regions are connected by a substantially trape 60 along vthe straight' line commensurate with 'the
zoidal region I5’.' The over-all dimension of th
widest portionthereof to fill 'and provide utmost
lateral resiliency‘and- self conformity with the
relatively curved. and >varying contour of the
is satisfactory for the "junior” size pad,'which
external femalegenitalia without causing any
may be made by using the lower limits,V andthe 65 roping, twisting, packing or‘discomfort of any
“regular or super” size, which may be made by
kind to the wearer. This provides an envelope
using the upper limits. However, a pad having
I8 that very. nearly conforms to the rearward
dimensions falling »within theV given ranges is
side ofthe pad> or' pads I0 save for slight lateral
quite satisfactory. Such pad is illustrated in
excess regions' 2|- 'and Y22` 'that'fold underneath>
Figure 8 and will be discussed in further detail 70 the, pad orA pads Ill when their Yenvelope I8 is
pad is indicated as 6 to 7%; inches.
‘
Y
`The dimensions given include-a range whic
hereinafter.
» ~
,
Figure 4 villustrates one manner in which the
applied inV operative position to the peri-anal
region ofthefernale body.
absorbent pad element I0 may be cut in mass
,i In view of> the’fact that the pad I0 isto be
production from a long strip of material> X, with
‘wornß with the' rear endl region I5 -terminating
atithe'z'anus, the forward gauze extension I8a may
the. Only _wasteoccurring at the .rounded end
27,408,503.
7
bemade shorter than the .rear extension IIlb;
This aids' a user> unfamiliarwith the new- type
of pad to automaticallyapply it in the proper
manner since the pad I0 will` not be properly
positioned relative t0. the vulva if the extension
I8a is disposed toward the rear.
effective and .suitable .distance sufficient to cover
the: usual length of the female. perineum,v Thev
association.- of the> fabric envelope I8 _with thev
moistureproof liner 2,3-24-25may be accom
plished simultaneous with the fabrication,;manufacturing or formation of the envelope I8` with
An important feature of the supporting strip
the pad or pads I0 during a selected Vor appro-v
of excess mass is facilitated by resort to» the
I I8' having a> radius of 1% inches and a rear end
priate step in the production thereof. Ii found;
I‘I is that it is more stable than the loose‘mesh
advantageous or should commercial practice sogauze envelope I8 and, therefore, is not subject
to> ready distortion as is said envelope. Hence, 10. dictate, the preformed ribbon-like moistureproof
liner 23-24-25 may be applied to the finished
the supporting strip is thus capable of preventing
gauze enveloped catamenial‘pad Hl'by pressure
the roping and twisting, above referred to.
application in the presence orV absence. of heat.
Another important feature of the supporting
'I'he extent, outline and location of the friction
strip I'I is that it serves to prevent roping of
eliminating surface 23-24-25 may be varied to
the> rear extension I8b inv the gluteal. fold, the
accomplish maximum comfort and ‘minimum’
result of which would normally be to produce
rubbing during bodymovement.
a cutting effect creating considerable discom
Referring now to Figure 8, atypical absorbent-`
fort to the wearer.
i'
pad element I0“ is shown superimposed upon vai
It should be appreciated. that the thickness
of the individual pad I I! or of a plurality >of 20L conventional pad element I0" in order to graphi
cally illustrate the tremendous saving in mate
superposed pads i0 can be varied to meet the
rial resultingv from the present invention. The
requirements of absorption and such depends
conventional pad I0” is illustratedr with arcuate
entirely upon the dictates of commercial practice
ends- cut upon a radius of 11/2 inches, the overall
and the Ycapacity of the particular absorbent
material that is selected. As has `been stated, 25 length of the pad being 9 inches. The pad IIla‘-,
which has dimensions that have been shown by
the area of the pads Il! is substantially reduced
numerous actual tests to give highly satisfactory
in over-all size from standard oatamenial pads
results, is provided with a forward >endregion>
now almost universally used and this elimination
comparatively narrow longitudinal strip I'I of 30 region I5a having a radius >of "/8 of an inch, the
overall length of the pad being ‘7 inches.
moistureproof material. The moistureproof‘strip
From simple- arithmetic the area of the: conI'I eliminates excessive body in the pads nor
ventional pad will be found to be 25.06. square'
mally thought necessary for support and inherent
inches and the area of the pad Ill*ì will' bev found
tensile requirements, and, further, serves to in
sure against striking through of the menstrual 35 to be 15.41 square inches. The-'difference in these
areasy is 9.65 square inches, and> calculated inper
iiow and uterine discharges.
centage, the pad IIIa requires 38.4% less~ material
In vorder to eliminate any possible discomfort
than the conventional pad Ill”. Expressed an--»
caused by chafing and dermatitis in that portion
other way, the material required to make 10.00
of the thighs` at the attachment of the abductor
conventional pads I0” would .make 1613 of the
muscles on the ischial tuberosity and between.
pads Illa'.
the buttocks in the peri-.anal region, the body
In the modified embodiment shown in Figures
contacting edges I3-»I4 of the gauze envelope I8
9 and 10, the moistureproof liner 23’--24.'--25’ is
are provided with a glazed or smooth finish sur
provided with a laterally extending. moistureim
face regions 23-24. The vsmooth non-friction
pervious under-flap 26’. The under-flap or mois
edge lining regions 2li-24> preferably adhere or
ture impervious surface 2B' is of substantially
constitute a composite part of the gauze I8 to
rectangular configuration formed integrally with4
constitute a continuous body contacting `'ribbon
the side edge surfacing ribbon 24’. The> under
having a rearwardly extending longitudinal me
flap 26’ extends laterally for a distance sufficient
dian projection defining a central upper lap 25.r
to cover the lower side of gauze envelope I8 when
To this end, the smooth finishv ribbon body con
the open meshy fabric sheet I8’ is folded over to
tacting liner 23-24-25 preferably consists of a
envelop the absorbent pad or pads I0' and. theirI
moistureproof material that is normally> soft,
moistureproof longitudinal supporting strip I1'
smooth and stable at body temperatures Aand may’
to constitute a rectangular enclosure or envelopev
advantageously be applied in Athe form of acom
therefor;
posite film of paraffin, rubber, Celluloid, Cello
As in the first described embodiment, a sub
phane or a combination thereof, lor any' other
stantially rectangular central upper lap 25’ is
suitable material, such as “Paraíilm,” supra, pos
formed as a rearwardy longitudinalV median exten
sessed of similar functional characteristics. This
sion of the smooth substantially U-shaped edge
smooth, soft and moistureproof liner 23-24-25
may be associated with the gauze envelope .I8 ` liners 23’--24', therebyy defining a continuous
body contacting ribbon 23’-24’-25' and a pro
by impregnation pressure application or ther
tective under-flap 26,’ that insures against mois
mally controlled composite processing to fill the
ture striking throughv the pad or'pads I0’. It is
voids of the gauze envelope I8 in the edge. and
clear that the length and lateral extent of the.
upper longitudinal rearward region `during or
moistureproof and smooth surface liners 23"-«
after the fabrication thereof.,
24ï’-25’---26' may vary within a wide range;
It should be noted that the moistureproof liner
however, the edge liners 23’-24" extend for
ribbon 23-24 extends forwardlyv along the body
wardly to the merger point of the outwardly-com
contacting edge outlines I3-I4 of envelope I8
verging side edgesr If3’--I4’ of pad I 0 With the
substantially ,to the forward limit point where
forward curved end I2" thereof. Such may be
side edges I3--I4 converge into curved forward
modified to meet the requirements of commercial
end region I I of the pad or pads I0. The central
upper lap 25 of substantiallyv rectangular- config
uration is, in this instance, formed integrally
with edge outlines I3--I4v of liner 23-24-25` and
extendsl rearwardly along~ envelope I8A for an
practice and the best results consistent with their
intended purpose,
Figures 11 and 1'2 illustrate still another modi
fied c'atamenial pad construction in which the
.10
supporting strip per se is eliminated and the
may be of the same length as the pad | 06, is inter
posed between the supporting strip |16 and the
gauze sheet or envelope is so wrapped and folded
around the absorbent pad as to provide, for eX
overlapped edges 40 and 4| of the gauze wrapper A
ample, four overlapping layers of fabric on the
|86, as shown in Figure 17. The pad |06, wrapper
|86 andsupporting strip |16 are all bonded to
under side thereof which serve as a “built-in”
band-like support preventing twisting Yand roping
of the otherwise loosely woven gauze envelope
when in use.
gether by the strip of “Paraiilm” 42 upon the
application of heat and pressure, it being under
stood that the heated “Parafìlm’f’ will permeate
.
As shown, a gauze sheet 29 extends in a single
said gauze wrapper and form a direct bond be
layer 30 over the upper surface of a pad I0d and 10 tween said pad and supporting strip, thereby ef
has a portion 3| which runs along the lower side
of said pad and is folded at 32> to provide a re
fecting a slight change'in the relation of the
parts shown in Figure 17. In this manner, the
wrapper |86 is positively maintained about the
pad |0e and the> wrapped pad is secured in. pre
versely extending fiap 33 overlying the portion 3|.
The gauze wrapper 29 also has a portion 34 adja
cent the flap 33 which in turn is folded at 35 to 15 determined Aassembled relation to the supporting
provide a second iiap 36. Thus, four layers of
strip |1e.
'
fabric 3|, 33, 34 and 3E extend alongthe under
Y Thejsupporting strip 11.6, as inthe previous
side of the pad |06, said layers forming in effect
constructions, may be made- of water resistant
an integral band having suñicient tensile strength
material, or not, as desired, but in the instant
to prevent Aany appreciable stretching or distor 20 modification need not of itself be moisture-proof
tion of the gauze envelope and thus serve as a
inasmuch as the- strip of r“Parai’ilm” 42 serves
substitute'for the supporting strip I1. It will be
thev further >purpose of moisture prooi-lng said
apparent from Figure 11 that the overlapped por
supporting `strip and thereby prevent striking
tions 3|, 33,34 ,and 36' have a minimum width
through. Also, as inl the previous constructions,
equal to that of the narrowest> or rear end region 25 the side edges of the wrapped pad may be ,made
I5d of the pad |06. ,
j;
non-chañng and moisture resistant, if desired.
It will be noted from Figure 15 that the strip |16
,
>Figure 13 diagrammatically illustrates another
manner of foldingV thegauze sheet 29 wherein
the ilaps 33V and >36 are folded in interlocking
relation.
y
A
._
»
is preferably not wider than the narrow end |66
of the> pad |06 and that said supporting strip ex
30 tends rearwardly a greater distance from said
e
, Figure 14 >illustrates an yabsorbent pad element
pad thanfforwardly, whereby to aid in properly
>|0b having a contour slightly different from the
pad Velement | 0 shown in Figure 3, but which,
nevertheless, is capable of carrying out the prin
positioning the rear end of said pad so that it
does not extend rearwardly beyond the anus.
ciples o_f the present invention. In this modified
form of pad |0b, the side edges |316 Vand I4b do
may be disposed in contact withY the pad |06; the
strip of “Para?ìlm” 42 placed incontact with the
not converge throughout the length of the pad,
but merely converge from the enlarged forward
endA region Il"4 to an intermediate point indicated
supporting strip |16; and the edge portions 40 l
and 4| of the gauze wrapper overlapped upon
Alternatively, the _supporting strip |16 obviously
the strip of “Parañlm” and all of the parts se
byv the line 40 and then extend substantially
>parallel to the rearmostextremity of said pad.
As illustrated, the front end portion ||b may be
kformed on a radius of 11A;A toll/2 inches, whereas
the rear end region, I'ô‘?l is formed substantially
40
cured togetherl in predetermined assembled rela
tion by heat- and pressure, without departing
from the principles of the Vpresent invention.
It is believed that the saving in wrapping mate
rial effected by the construction shown in Figures
rectangular‘and has a width of 1 to 2 inches andA 45 15 to 17 «will bemanifest when the factis con
a length of 11A to 21A; inches. The portion of
sidered `that the wrapping on the conventional
the' pad fl ll16 between the substantially semicir->
cular forward endmportion IIb and the substan
tially rectangular rear end region I5b is substan
tially trapezoidal, andtheoverall length _of the
Kotex pad is >approximately 191/2 inches long and
4element |0‘6 shown inFigure 14 is adapted to be
ing the material employed vinv the supporting strip
|16, such‘stripk may be made about 191/2 inches
91/2 inches wide and has an area of 185.05 square
inchesgwhereas the gauze sheet or wrapper |86
V50 at most will notbe longer than 81/2 inches and
Apad may `vary from d to ^7 1/2 inches. Y
`not more than about 7 inches wide, the area of
-. 1t will‘beunderstoód` that the absorbent pad
such sheet being 59,1/2 square inches.` Consider
associated with agauze sheet vand supporting
strip similar to that shown and describedv in
A‘connection with Figures 5 and 9. Alternatively,
f 55
_the pad |0b` may be employed with a-gauze sheet
folded about said pad in vthe Amanner shown »in
either Figure 12 or 13.
>
f
'
'
`Figures 15, 16 and `17 illustratefanother ems.
bodiment of the invention byfmeans of which a
maximum ofsaving in both pad material and in
the gauzewrapper can be effected. `In this form
60
long at most .and about 2 inches wide, and thus
have- an area of 39 square inches. When this is
added to the area of the material of the gauze
sheet` |86 a total area of 981/2 square inches of
material“ is needed, compared with the 185.05
square inches >of «material in the conventional
pad. , In other words, the present invention, even
when employing. the maximum amountof fabric,
requires less than one-half of the material now
of the invention an absorbent pad» |06 is enclosed
employed in the Wrapper of conventional pads.
>in an ¿abbreviated loose mesh Agauze, sheet» or 65 The vast amount of material saved bythe ab
¿wrapper |86, which »preferably does not extend
breviated absorbent pad element per se has al
more than half ,aninch beyondthe ends |26 and
readybeen emphasized. When the saving in
|§6 Y_of said pad. The-gauze sheet I8e has longi
tudinal edge portions 40 and 4| ,which overlap on
¿the underside of the pad, _as is best illustrated in
-material of both the wrapper and. pad element
Figure. 17. v. A flat longitudinal supporting strip
or band-|16 of relatively Acloser weave and greater
Figures 18 and 19 illustrate still another em
bodimentof the invention in which even- greater
are combined‘the economy effected is obviously
enormous.
J
u
Y
ytensile strength than the wrapper |86 is disposed
saving is eiîected by thetotal elimination Vof the
`adjacent ,the` overlapped portions 40 and 4 |> ofthe
gauze sheet or wrapper. This further saving is'ef
gauze wrapper. A' strip. ofë“Para?ilm’? 42, which: 75 ~fected by. employing an absorbent pad |0f of mate
2,408,508
11
ments of the invention Vherein specifically de~
rial which will not disintegrate in the presence of
scribed without departing from the invention or
moisture, such as, for example the absorbent cot
sacriñcing any of the advantages or features
ton felt disclosed in copending application, Se
thereof, and nothing herein shall be construed »as
rial No, 457,456 ñled on September 5, 1942 and
entitled Absorbent felt. In view of the fact that En limitation upon the invention, its structural em
bodiment or concept as to the whole or any part
said cotton felt will not disintegrate in the pres
thereof except as deñned in the amended claims.
ence of moisture, as is the case with the cellucot
Moreover, it will be understood that certain of
ton now used in conventional pads, no wrapper
the features disclosed herein may be advanta
is needed to hold the pad together while in use.
geously incorporated in conventional pad manu»
As is best shown in Figure 19, a flat supporting
facture, and hence, the invention is not to be
strip or band llf, whose width is approximately
construed as limited to the speciñc constructions
equal to that of the narrowest portion of the pad
illustrated
herein as operative examples vof the
idf, is adhesively bonded to the underside of said
invention.
pad by a strip of “Parai-llm” 43 which need be no
longer than the length of said pad. The strip
of “Parai-llm” 43 will effect bonding of the pad
lûf and the supporting strip I'lÍ in the desired
predetermined relation upon application of heat
and pressure, as aforedescribed. However, in ad
dition to bonding the pad Iûf and strip I'If to
gether, the strip of “Parañlm” 43 serves also as
a moisture prooûng medium to prevent striking
through. The edges of the pad Inf may be pro
vided with a suitable non-Charing coating, if de
I claim:
1. A catamenial device comprising: a pad of
predetermined shape including a body of ab
sorbent material of substantially uniform thick
ness having a narrow rear end region, a rela
tively wider front end region, and an inter
mediate region of non-uniform width connecting
said front and rear regions and providing con
verging side edges between said front and rear
regions, said intermediate and rear end regions
sired, or the strip of “Paraiilrn” 43 may be ex 25 being sized and shaped to fit against and conform
to the anatomical contour of the external
tended around the side edges of the pad as indi
genitalia and the adjacent parts of the inner
cated at Ml in Figure 20 for this purpose.
thighs of the wearer without any substantial
The structures described herein are designed
lateral compression of said absorbent pad, the
not only to give maximum protection and com
fort, but also conform to modern manufacturing 30 over-all length of said absorbent pad being such
as to extend from the anus to a point slightly
methods, create an appreciable saving in mate
beyond the mons Veneris; and an open mesh
rial, accomplish a definite economy in manufac
gauze sheet of substantially greater length than
ture, and provide maximum absorption in the
said absorbent pad enclosing said pad and pro
region where such is required without the usual
cliañng and striking through defects of known 35 viding extensions extending rearwardly and for
wardly of the ends of said pad adapted to be se
catamenial pads. Then, too, the “built-in’-’ band
cured to a suitable sanitary belt, one thickness
or the separate center longitudinal strip which
of said gauze sheet overlying the upper surface
extends for the entire length of the pad including
of said absorbent pad,” the side edges of said sheet
its gauze envelope, serves to prevent chañng due
to roping or “bunching” of the pad, adds security 40 being folded in overlapping relation along the
lower surface of said pad to provide more than
to the user, discourages striking through of any
two thicknesses of fabric, said overlapped por
moisture to the lower side of the gauze envelope,
tions being of a width approximately equal to
increases invisibility when worn beneath scant
the narrow rear end region of said absorbent pad
clothing, prevents the hair on the vulva from be
and serving as a band-like support underlying
coming enmeshed in the gauze covering the pad,
the maior portion of the area of said pad to pre
prevents roping of the gauze extensions and
vent roping and twisting of said pad in use and
thereby eliminates undesirable cutting or chaflng
to further provide a rearward gauze extension
in the gluteal fold, increases the security of faswhich will not` rope and produce a cutting eiïect
tening and holding the pad or pads in position,
and minimizes the size and thickness of the pad 50 in the gluteal fold, said pad being adapted to be
or pads.
~
Catamenial pads have a tendency to move for
wardly during the act of walking, and the pro
vision of a center supporting strip with the- se
worn with the narrow rear end region terminat
i-ng- atv the anus, whereby'the usual bunching and
packing rearwardly of the anus isl eliminated-and
the discomfort to the'wearer incident thereto is
lected outline of the pad or pads Ill-.41|e prevents Ul 5 avoided.
‘
2. A catamenial device comprising: a pad of
such forward displacement. The additiona1 fea
predetermined shape including a body of ab
ture of a smooth, glazed coating or covering of
sorbentmaterial of substantially uniform thick
moisture proof material on the lateral edge and
ness having a substantially semicircular forward
rearward portion of the pad, affords non-channg
end region formed on a radius of about 11A; to >11/2
contact with the upper regions of the wearers’
inches, a substantially» semicircular rear end
thighs and perineum, results in a tremendous im
region formed on a radius of about 1/2 to one inch,
provement in comfort by the elimination of
andV a substantially> trapezoidal region connect
chañng and consequent dermatitis or skin in
ing said substantially semicircular- end regions,
flammation.
said absorbent pad having an over-all length of
Then, too, the feature of sealing the under-side
about 6 to '7 1/2 inches, said overall length of said
of the pad or pads throughout the absorption
pad being such as to extendA from the anus to a
area with a moistureproof composition prevents
point slightly beyond the mons Veneris; and an
the striking through of moisture which is annoy
openY mesh gauze` sheet of substantially Vgreater
ing, uncomfortable and often results in uncon
length than said absorbent pad enclosing said
trolled soiling of adjacent articles of clothing.
pad and providing extensions extending rear
Furthermore the moisture is prevented from
wardly and forwardly ofthe ends of said~pad
striking through the lateral sides of the pad
adapted to be secured to a suitable‘sanitary belt,
which often infiarnes the skin and results in a
one` thickness of said gauze'sheet overlyingA the
most unsanítary condition.
Various changes may be made in the` embodi 75 upper surface ofy said absorbent pad, the side
T13
2,408,508
14
relation along the lower surface of said pad to
provide four thicknesses of fabric, said overlapped
nai-,ing at the anus, whereby the usual bunching
and packing rearwardly of the anus is elimi
nated and the discomfort to the wearer incident
portions having a width of 1 to 2 inches, but in
any event being of a width approximately equal
thereto is avoided.
3. A catamenial device comprising: an ab
Y edges of said sheet being folded in overlapping
sorbent pad of substantially uniform thickness;
and means providing a longitudinal band-like
support along the underside of said pad compris
serving as a band-like support underlying the
ing a gauze envelope having reversely folded edge
major portion of the area of said pad to pre
vent roping and twisting of said pad in use and 10 portions providing overlapping layers of fabric of
substantial width arranged medially of the side
to further provide a rearward gauze extension
edges of said pad.
which will not rope and produce a cutting effect
JOHN P. CANAVAN.
in the gluteal fold, said pad being adapted to
to the diameter of the narrow rear end region
ofy said absorbent pad, said overlapped portions
be worn with the narrow rear end region termi'
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