U.S. patent number 3,818,911 [Application Number 05/252,475] was granted by the patent office on 1974-06-25 for medicament and swab type applicators.
Invention is credited to Erick-Pierre Fournier.
United States Patent |
3,818,911 |
Fournier |
June 25, 1974 |
MEDICAMENT AND SWAB TYPE APPLICATORS
Abstract
Applicators for liquid or semi-solid compositions capable of
single or multiple use characterized by a unitary handle and
elongated stationary or rotatable support for an applicator swab. A
cover which protects the swab and can be removed and united with a
unitary handle to form an extended handle which may be included as
part of the applicator unit.
Inventors: |
Fournier; Erick-Pierre (New
York, NY) |
Family
ID: |
22956162 |
Appl.
No.: |
05/252,475 |
Filed: |
May 11, 1972 |
Current U.S.
Class: |
604/1; 15/244.2;
401/196; 401/207; 401/130; 401/198 |
Current CPC
Class: |
A61F
13/38 (20130101); A61M 31/00 (20130101); A61M
2210/1475 (20130101) |
Current International
Class: |
A61F
13/40 (20060101); A61F 13/38 (20060101); A61m
035/00 () |
Field of
Search: |
;128/269,260,261,263,270
;401/198,243 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Medbery; Aldrich F.
Attorney, Agent or Firm: Morgan, Finnegan, Durham &
Pine
Claims
I claim:
1. A vaginal applicator which comprises a base support member, an
elongated rod-like member which extends outwardly from said base,
said elongated rod-like member having disposed thereon a cured
polymeric foam material which covers substantially all of the
distal portion of said elongated rod-like member and which extends
outwardly from said base, said material being shaped to form at
least two annular inverted cup-like convolutions that have a
central portion that extends from the interior thereof to the
exterior of the next succeeding cup-like convolution, said cup-like
convolutions being resiliently compressible in a radial and
longitudinal direction with respect to the axis of said elongated
rod-like member and a cap covering said inverted cup-like
convolutions and selectively removably engaging the base support
member to provide a gripping means.
2. A vaginal applicator as defined in claim 1 wherein the base has
a tapered surface forming a substantially air-tight seal with an
inside surface of said cap.
3. A vaginal applicator as defined in claim 1 wherein one of said
base and said cap forms a peripheral ridge and the other forms a
complementary recess for accepting the ridge.
4. A vaginal applicator as defined in claim 1 wherein the elongated
rod-like member is oriented to have its axis generally parallel to
the axis of the grippable base.
5. A vaginal applicator as defined in claim 1 wherein said
elongated rod-like member is circular.
6. A vaginal applicator as defined in claim 1 wherein the cured
polymeric foam material is a polyester or polyether urethane
foam.
7. A vaginal applicator as defined in claim 1 wherein the cured
polymeric foam material is impregnated with a liquid or semi-solid
composition.
8. An applicator as defined in claim 1 wherein said base support
member is detachably affixed to said elongated member.
9. An applicator as defined in claim 1 wherein said base support
member is angulated.
Description
BACKGROUND OF THE INVENTION
This invention relates to multi-purpose applicators for use in the
application of liquid or semi-solid compositions. The invention has
particular application to low cost, mass produced one-use
disposable devices in which premeasured liquid medicaments,
chemicals, etc. for many uses are carried by the applicator within
a sealed, leakproof enclosing means.
DESCRIPTION OF THE PRIOR ART
A number of applicators for several purposes particularly the
dispensing of medicaments, have been known or used for some time.
One such applicator is a vaginal instrument comprised of a
relatively hard-surfaced, elongated cylindrical rod to which is
affixed sponge rubber finger-like projections. It is intended
primarily as a nozzle for a douche syringe, although it may be used
as an applicator and does not have any capping means. This
applicator is disclosed in U.S. Pat. No. 2,127,094. Another
patented arrangement, described in U.S. Pat. No. 3,228,398 embodies
a smooth-surfaced polyurethane foam layer affixed to an elongated
rigid support member.
Devices such as the foregoing, however, are generally restricted to
specific purposes, primarily medical and have no provision for
preventing the unwanted evaporation or other loss of liquids and
the like impregnated in or carried by the swab. Furthermore, the
absence of any protective closure means for the swab is a hygienic
drawback.
Known applicators are characterized by their lack of compactness
and thus, are bulky. The marketability of these products may be
impeded because of the difficulty in containing or packaging such
applicators in an attractive manner. This is a particularly severe
disadvantage in the distribution of low cost medicinal applicators
and the like. Coupled with those shortcomings is the inability to
dispense premeasured liquids or semi-solid quantities.
It is accordingly one object of this invention to provide an
applicator for applying refreshing, cleansing or medicated
compositions to internal or external body surfaces.
Another object of this invention is to provide an applicator having
both domestic and commercial applications and which is also readily
adaptable to compact and attractive formulation and design.
It is a primary and further object of this invention to provide a
novel applicator for liquid and semi-solid compositions which is
adaptable to mass production as both a reusable device and as a
single use, fully disposable combined carrier and application
device.
A further object of this invention to provide an applicator capable
of storing a premeasured amount of a liquid or semi-solid
composition.
SUMMARY OF THE INVENTION
In brief, these and other objects of the invention are obtained by
an applicator having three structural members providing defined
functions. These members may be of unitary or assembled
construction, depending on the particular device and the material
employed in their manufacture.
In a preferred embodiment, the applicator comprises one member
making up a grippable support portion and at least one elongated
support portion to which a layer of absorbent or resilient material
is affixed. When the applicator is produced from resinous materials
such as polystyrene, it may be convenient to injection mold a
grippable support member and an elongated support member in one
piece. As an alternative, the grip may be detachable for reuse. The
swab is preferably made from a "cured polymeric foam material,"
which is a resilient cellular porous substance formed from a
natural or synthetic polymer that is capable of holding a quantity
of liquid or semi-solid material in its cellular spaces. Foam
rubber, polyether or polyester urethane foams and the like are some
examples. For purposes of illustration, an applicator swab formed
of cured polymeric foam material will be described in connection
with the several embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
For a complete understanding of the invention, reference should be
made to the following detailed description of several preferred
embodiments, and to the drawings in which:
FIG. 1 is a top view of a vaginal applicator base of the invention
which shows a grippable support member with an elongated support
member;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a side elevation view in partial cross-section of the
applicator of FIG. 1 provided with a protective cap and compressed
cured polymeric foam layer;
FIG. 5 is a view similar to FIG. 4 with the cap removed and the
cured polymeric foam layer expanded;
FIG. 6 is a side elevation in partial cross-section of an alternate
embodiment of the invention, wherein the foam layer has a different
shape;
FIG. 7 is a side elevation view of another embodiment according to
the invention useful as a vaginal applicator;
FIG. 8 is a side elevation view of the FIG. 7 device with a
threaded cap joined to the base;
FIG. 9 is a partial cross-sectional view of the FIG. 8 applicator
showing a compressed polymeric foam layer;
FIG. 10 is a side elevation view of the applicator of FIG. 9 with
the cap removed and fitted to the base as a handle extension;
FIG. 11 is a side elevation view of another embodiment of a vaginal
applicator base according to the invention;
FIG. 12 is a side elevation view of the applicator base of FIG. 11
showing the cap in place;
FIG. 13 is a side elevation view of the base of FIG. 12 showing the
detached grippable base member and a compressed, cured polymeric
foam layer in cross-section;
FIG. 14 is a side elevation view of the applicator shown in FIG. 13
with the cap removed;
FIG. 15 is a side elevation view of the applicator of FIG. 14 with
the cap affixed to the base as an extension of the gripping
surface;
FIG. 16 is a front elevation view of a capped oral hygiene device
according to the invention;
FIG. 17 is a side elevation view in cross-section of the capped
oral hygiene device of FIG. 16;
FIG. 18 is a side cross-sectional view of the FIG. 17 device;
FIG. 19 is a front cross-sectional view taken along the line 19--19
of FIG. 18;
FIG. 20 is a side elevational view of the FIGS. 16-19 showing the
cap removed and affixed to the base as a handle extension;
FIG. 21 is a front elevational view of the assembly of FIG. 20;
FIG. 22 is a side elevational view of another embodiment having two
coaxial support members which extend in opposite directions;
FIG. 23 is a cross-section view of the FIG. 22 embodiment;
FIG. 24 is a cross-sectional view of the embodiment of FIG. 22 and
FIG. 23 which shows the cap removed from one end;
FIG. 25 is a side elevation view of another embodiment which
includes a double surfaced applicator with a cap;
FIG. 26 is a bottom view of the FIG. 25 device;
FIG. 27 is a side elevation view of the applicator of FIG. 25 with
the cap removed and fitted to the base as an extension handle;
FIG. 28 is a side elevation view in partial cross-section of the
FIG. 27 device;
FIG. 29 is a cross-sectional view taken along the line 29--29 in
FIG. 28;
FIGS. 30 and 31 are front elevation and plan views of the FIG. 27
device.
FIGS. 32-36 are side elevational and end views of another
embodiment having a cap over-fitting the swab and removable for
attachment as a handle extension;
FIGS. 37-38 are side elevation and end cross-sectional views of
another embodiment of the invention wherein a plurality of cured
polymeric foam layers are affixed to a rotatable support
member;
FIGS. 39 and 40 are side elevational and end views of a further
applicator according to the invention but having a non-detachable
handle which is laterally spaced and generally parallel to the
elongated support member;
FIGS. 41 and 42 are side elevation and end views of another
applicator of the invention having a non-detachable handle;
FIG. 43 is a partial cross-section side elevation view of the
applicator of FIG. 41.
FIG. 44 is a cross-sectional view along the line 44--44 in FIG.
43;
FIG. 45 is a broken away side view of the cap 16 of FIG. 43;
FIG. 46 is a cross-sectional view taken along the line 46--46 in
FIG. 45;
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Although the invention has many uses and advantages, it is helpful
to describe the various embodiments in terms of representative
uses. One such embodiment is adapted for use in feminine hygiene
and is typical of other embodiments in the relationship of its
components and its inherent advantages and utility. Liquid and
semi-solid compositions may be applied with this applicator for
cleansing, medicinal or contraceptive purposes.
In the healthy female organism, normal vaginal secretions
originating from the various gland centers such as Skene's and
Bartholin's consist of a serous, mucoid exudate whose flow is
related to normal physical and psychic stimulation. In addition to
these normal secretions, desquamating epithelial cells from the
vaginal walls and residues from menstrual flow constitute other
debris which if not regularly flushed out may cause discomfort due
to odor and irritation. Also, pathogenic bacterial growth may occur
in spite of the inhibiting effect of the natural acidic milieu of
the vaginal tract.
The conventional methods of vaginal hygiene may be grouped into two
categories. The first category relates to externally applied
deodorants which may be applied as liquid or powder sprays with or
without an aerosol applicator means and the use of pre-moistened
non-woven cloths. The second category relates to douching with
medicated or non-medicated solutions.
The methods are not without varying forms and degrees of
shortcomings. While vaginal deodorants are generally held by
gynecologists to be largely ineffective as they are strictly
limited to external action, sprays have recently come under severe
criticism for the skin irritation which is caused by germicides
such as hexachlorophene or the propellent gases. Douching remains
as the most effective cleansing method in use, eventhough it is
regarded by most women as a cumbersome enterprise while physicians
consider it inadequate in combating abnormal vaginal conditions
such as moniliasis, trichomoniasis and non-specific bacterial
vaginitis.
A third method of vaginal cleansing has been based on the use of
"scrubbing" devices which were used to dislodge from the vaginal
walls whatever debris was not eliminated by gravity alone. Some of
these devices are shown in U.S. Pat. Nos. 2,127,094 and 3,228,398,
which have been noted above.
Known vaginal scrubbing devices such as these are bulky and are not
either compact, easy to carry or adaptable for pre-impregnation
with a cleanser or medicament.
In contrast, a vaginal applicator according to the invention can be
fashioned to a dimension not more than 2 to 31/2inches in length
making it inconspicuous, readily concealable and easily disposable.
Structurally, it includes (1) a grippable base support member (2) a
elongated support member (which may be formed as a single piece
with the base) and (3) a continuous layer of cured polymeric foam
material which has a deformed (resiliently stressed) configuration.
An especially preferred embodiment incorporates a shaped continuous
layer of cured polymeric foam forming a swab shaped with convoluted
annular rings. A protective cap slips over the swab for packaging
or storage and forms an extension of the base when it is slipped
off the swab and affixed to the base. The base in this embodiment
is formed to engage the cap by friction or by a threaded
fitting.
The base member may be so constructed that it can be detached and
reused as a holder for fully disposable applicator tips (separately
supplied) which comprise the cured polymeric foam layer and its
supporting structure. For this type of use, the base may be
structured with a tapered friction fitting surface, a press fit
snap ring or a threaded means of attachment.
For the dual purpose of reducing the packaged dimensions of the
device and of providing more comfortable handling, the end portion
of the base may be bent to an angle of 10.degree. to 15.degree..In
this case, it is especially advantageous to use the protective cap
as an extension of the base, and thereby an extension of the
gripping surface.
The vaginal applicator may be supplied preimpregnated with various
therapeutic and non-therapeutic compositions. Optionally
non-impregnated applicators may be made available as travel kits
with a supply of conventional liquid or semi-solid compositions. In
this embodiment, the required amount of the particular therapeutic
or non-therapeutic agent can be adsorbed into the foam layer swab
immediately prior to administration.
The single use disposable embodiment is especially advantageous for
the treatment of infectious conditions, as it eliminates the
applicator as a source of superinfection and reinfection during the
period of treatment.
Referring now to the drawings, FIGS. 1-15 show various views of
various embodiments of the invention relating to applicators useful
in feminine hygiene. For convenience, the same reference numerals
are used throughout to designate corresponding elements of all
embodiments.
In FIGS. 1 and 2, the basic component is shown to include a
grippable support member 10 and a substantially narrower shaft 12
extending upwardly from the base. A base stand 11 is formed by the
tapered upper surface of the base 10. Longitudinally oriented
ridges 14 provide an irregular surface permitting more secure
gripping by the user. The upper portion of the base forms a
platform 19 which is surmounted by a stand 11 whose circumferential
edge 20 is tapered axially such that at the junction with the
platform 19 a flat narrow rim 21 is formed. The relief of
longitudinal ridges 14 is best seen in FIG. 3.
FIG. 4 shows a capped applicator with a compressed irregularly
shaped cured polymeric foam material 17 affixed to the axially
oriented elongated support member 12 of FIGS. 1-3. The shaped cured
polymeric foam is provided with annular convoluted folds 18 which
extend downwardly to increase the surface area and to provide a
gentle scrubbing action against the vaginal walls. The cap 16 is
shaped as a relatively narrow cylinder so that it compresses the
annular convoluted folds when it is in place on stand 11. On the
cap 16 there are provided longitudinal ridges 15 to provide a
slip-free gripping surface. In this view the downward tapered
configuration of the edge 20 of stand 11 is clearly observable and
is shown to engage and form a tight friction seal with the cap 16.
FIG. 5 shows the applicator of FIG. 4 with the cap removed. It is
preferred to leave a small space 22 at the lower end of the
elongated support member so that the cured polymeric foam layer 17
may be compressed axially as well as radially to fit within the
cap.
FIG. 6 shows a vaginal applicator in which the cured polymeric foam
layer 17 has been formed into outwardly extending annular ridges
24. This illustrates another typical configuration in which the
cured polymeric foam layer may be formed.
FIG. 7 is an embodiment of a vaginal applicator wherein the
grippable base support member 10 is bent at an angle and provided
with a bottom platform 31 which is equal in radial dimension to
platform 11 so that a cap 16 which is fitted to the platform 11 may
be used as a handle or handle extension when it is pressed onto the
bottom part of support member 31. Both the platform 11 and the
bottom platform 31 are provided with screw threads 32 and 33 of
equal pitch so that a threaded cap may be employed which will fit
tightly against rims 21 and 30. FIG. 8 is a view of the base of
FIG. 7 with the threaded cap joined to the upper portion. The cap
16 may be provided with longitudinally oriented ridges 15 to
provide for easier gripping by the user.
FIG. 9 shows the caps 16 cut away to reveal a section of the cured
polymeric foam layer 17. FIG. 10 illustrates the FIG. 9 device with
the cap removed to allow the cured polymeric foam layer 17 to
expand to its normal position. The cap 16 is depicted joined to the
base support member 10 to provide a longer gripping surface which
facilitates the deep insertion of the applicator tip into the
cervical region of the vagina.
FIGS. 11-15 show another embodiment of a vaginal applicator wherein
the angled grippable base support member 10 is detachably affixed
to an axially oriented elongated support shaft 12. As seen from
FIG. 11, the shaft 12 extends from an annular grip 41 to provide a
holding surface when detachable grippable base support member 10 is
removed. Annular rings 43 are provided to form a slip-free gripping
surface. Annular recesses 40 and 42 are provided to receive a
complementary annular ring 41A inside of the slightly resilient cap
for the purpose of holding it firmly in place.
In FIG. 13, the cured polymeric foam layer 17 in a compressed state
can be seen. The base 10 is removably attachable to the annular
grip by the screw threads 44 which engage a threaded socket 45 in
the grip 41. FIG. 14 shows polymeric foam layer 17 expanded to its
uncompressed volume. A small space 22 at the lower portion of the
axially oriented elongated support member allows for axial
compression of the cured polymeric foam layer so that it will fit
into the cap.
FIG. 15 illustrates the assembly with the cap 16 affixed to the
detachable grippable base support member 10 as an extension of the
gripping surface.
When the applicator of the invention is to be employed in dental
hygiene for cleansing or oral massaging pruposes, it is preferred
to use a structure of the type illustrated in FIGS. 16-21.
The cured polymeric foam surface may be impregnated with a suitable
liquid or cream tooth surface cleaner and then capped with a sealed
protective cap. The irregular surface of this embodiment is
preferably a grid-like pattern of regularly spaced divided sections
to provide a scrubbing action when passed over the teeth. The foam
surface layer does not provide an optimum type of cleaning action
as it does not have a brush-like surface which is capable of
dislodging all food particles from the crevices and spaces between
the teeth. However, it is primarily intended as a single use
disposable means of substantially cleaning the teeth when traveling
or when one is not able to use a conventional toothbrush with a
tube of dental cream.
FIG. 16 shows a capped oral hygiene device. The grippable base
support member 10 is adapted to engage cap 16 as an extension
handle when it is removed for use. The surface area which will
engage the cap is the distal base area 31 of the grippable support
member 10. FIG. 17 reveals the angular configuration of the
grippable base member 10.
As best viewed in FIG. 18, the elongated support member 12 is shown
with a tapered base section 51 which allows the use of a layer of
cured polymeric foam 17 on one surface of the distal portion of the
elongated support member and is adaptable to be enclosed with a
straight sided cap 16. The tapered edges of the stand 11 and the
flat narrow rim 21 of the platform 19 are clearly shown in FIG. 19.
FIGS. 20 and 21 show that the cured polymeric foam layer 17 has an
irregularly shaped surface 52 made up by a plurality of small
tubularly shaped, closely adjacent sections which form a cleansing
grid and which is permanently deformed to provide an abrasive or
scrubbing action when it is passed over the teeth surfaces. To
protect against injury to the gums, the cured polymeric foam layer
17 may be formed so that it covers substantially all of the distal
portion of the tapered support 51 with at least some cured
polymeric foam material.
The applicator embodiment which is adapted for use as an implement
in cleaning or medicating the ear or for other diverse purposes, is
shown in FIGS. 22-24.
This applicator may be employed dry in the same manner as
conventional cotton tipped swabs are employed in cleaning the
various parts of the external ear. It may also be premoistened with
aqueous or non-aqueous cleansing solution to aid with cleaning of
the ear or of the perianal region of infants. It may also be
impregnated with a medicated liquid, e.g., an antibiotic solution,
for use in treating otitis externa. For such applications, the
liquid may be placed in the auditory canal by inserting the
pre-impregnated applicator and pressing the applicator against the
sidewalls of the canal.
Referring to FIG. 22, the applicator has two coaxial elongated
support members 12 which extend in opposite directions from the
base support member 10 for use in otic hygiene or in applying otic
medication. These applications may also be employed in other body
orifices, such as the nose, as applicators for medicinal
compositions or, in the case of new-born infants, as cleansing
aids. Caps 16 engage the grippable base support member 10 at each
end.
The elongated support members 12 have bulbous tips 13 (FIGS. 23-24)
which function as protective aids to prevent mechanical injury of
body tissues. The cured polymeric foam layers 17A and 17B have
different shapes permitting the use of the same applicator in all
parts of the ear, which may vary greatly in size and configuration.
The cured polymeric foam layer 17A for example is adapted for
cleansing the open lobe areas of the ear. The opposite tip 17B,
shaped as a smooth and narrow cylinder, is designed to reach into
the farthest recesses of the auditory meatus.
Another embodiment of the invention comprises a double surface
applicator. A particularly preferred structure for this embodiment
is shown in FIGS. 25-31. This type of applicator may be employed
for the application of two different compositions or may be used as
a combination applicator-polisher. When one surface is to be used
as a polisher or buffer, it may be preferred to substitute a soft
cloth surface for one of the cured polymeric foam layers. The
surface of the foam layers can be shaped in an irregular fashion so
as to provide a deformed surface capable of being used for
scrubbing or scraping.
The cap provides a seal which not only seals the applicator
surfaces from the air but also from each other. Thus, it is
possible to pre-impregnate the foam layers with different
compositions that may be employed sequentially. The sealing feature
will prevent intermixing of the different compositions. This type
of applicator may be used for nail polish removal wherein one side
would be impregnated with a nail polish solvent such as acetone and
the other side would be substantially in a dry condition for
polishing the nails and removing particles of softened and
dissolved nail polish. It could also be employed as a cleaner for
magnetic tape and records wherein one side would dispense an
anti-static agent while the other would mop off dust particles.
This embodiment could also be supplied with a detachable handle
which could be used in combination with disposable refill
applicators which would comprise the upper part of the applicator
including the elongated support and the cured polymeric foam
layers.
Another embodiment of the double surface applicator comprises
removable foam layers which can be detached and reimpregnated with
any desired liquid or semi-solid composition. This type of
applicator can also be refilled with new cured polymeric foam
layers.
FIG. 25 shows the package configuration for a double surfaced
applicator enclosed with a removable cap 16. As in the other
embodiments, the cap is attachable to the lower part of the support
to form a handle extension 16A (FIG. 27). The base 10 also is
provided with grooves 55 which are adapted to engage with mating
projections 62 of the cap 16, best seen in FIG. 29.
The shaft or rod 12 is preferably rectangular in this embodiment
and carries opposite layers 54 and 56 of cured polymeric foam. The
rectangular shaft distributes handle pressure over the respective
layers. The shaft 12 has a peripheral ridge 58 which cooperates
with the cap to form a seal separating the two layers of cured
polymeric foam. This feature is most apparent in FIG. 29. There,
the projections 62 form between them a recess which mates to the
ridge 58. These same projections slip into the grooves 55 in the
base 10 when joining the cap to the base to form a grip
extension.
The invention also embraces devices wherein an elongated member
supports at least one distinct layer of cured polymeric foam for
rotation to different positions. A number of preferred embodiments
are shown in FIGS. 32-43.
Applicators of this type may be provided with distinct layers of
cured polymeric foam carried on the support member such that each
layer is separated by a portion of the support member and is sealed
in a separate compartment by means of the cap. The cap in this
case, engages elevated ridges of the elongated supporting member in
mating grooves to prevent any intermixing of the compositions with
which the cured polymeric foam layers may be pre-impregnated. The
cap also is adapted to form a grippable extension handle with the
base. It is preferred to provide some means for attaching the
handle in a position above the applicator surface, as shown in FIG.
36. In the alternative, it may be advantageous to employ a
permanent handle fashioned as an integral part of the base member.
This is shown by way of example in FIG. 41.
The rotatable elongated support may be affixed to the base in any
fashion that permits rotary movement. In one preferred embodiment
the base forms a cylindrical cavity which serves as a rotational
bearing surface, supporting the cylindrically shaped end of the
elongated support member. The cylindrical cavity of the base is
grooved to accept a circular pressure ring on the cylindrical end
of the elongated support member. A pin may be used as a means of
securing the base and elongated support member together.
In the preferred arrangement, the end of the elongated support
member opposite the rotating joint has an index wheel or the like
which can be grasped and turned to rotate the desired resilient
layer into position for use. This embodiment may be advantageously
employed, for example, as a shoe shine kit wherein one layer
surface could be provided with a polish impregnated brush, another
with a polishing surface and one more with a buffing surface. The
brush type surface may be prepared by injection molding techniques
to form plastic bristles, or specially shaped cured polymeric foam
layers may be substituted.
In the shoe polish type applicator, a refillable type elongated
support member can be used. Refills may comprise for example, a
flexible slip-on structure retaining the cured polymeric foam
layers.
FIGS. 32-46 show in detail the various embodiments of the invention
described above. All of these have a grip extending laterally from
the base support member in a substantially parallel relation to the
elongated support or shaft.
FIG. 32 illustrates a U-shaped base support member 10 having a
cap-receiving tapered extension 31 and a cap-engaging tapered
extension 11a from which extends the generally parallel elongated
support member 12 fitted with a cap 16. The cap has gripping ridges
14.
The base support member 12 provides a generally flat support
surface 65 for the foam layer 17 that is curved from the extension
11a into a generally flat shape.
FIG. 35 illustrates how the layer 17 is secured to the support
member 12 by a dovetail extension 66 and groove 67 receiving the
length of the layer and support respectively. An adhesive is used
to hold these two elements permanently in place.
FIG. 36 indicates the configuration of the applicator cap 16
removed from its protective position over the layer 17 and joined
to the upper extension 31 to form a parallel handle. The other
features of this embodiment are similar to those described above
insofar as the points of retention for the cap, the cured polymeric
foam layer and the elongated base support member.
FIGS. 37 and 38 illustrate a modified embodiment of the device
shown in FIGS. 32-36. Here the elongated support member 12 is
supported for rotation about its axis 68. The rotating joint is
identical to that of the embodiment of FIG. 43, which may be
referred to as showing the components in partial cross-section. In
the lower extension of the base 10, is formed a cylindrical cavity
71 for receiving, providing a bearing surface for the cylindrical
extension 72 of the rotatable support 12. This extension includes
an annular pressure ring 74 and is slotted as indicated at 75 so
that the extension 72 is radially compressible. When the unit is
assembled, the cylindrical extension, which is over-dimensional, is
radially stressed so that the pressure ring 74 snaps into a
complementary annular recess 76 in the cavity 71.
The extension 11a of the base 10 also includes a retention point 78
which stabilizes and guides rotation of the support member 12.
These retention points 78 are received in the cavities 80 formed in
the end section 79 of the member 12.
As seen in FIG. 38, the elongated support member has a web 81
forming three hollows 82 for accepting three distinct layers of
cured polymeric foam material. An index wheel 61 at the far end of
the web 81 provides a digitally graspable turning means. The
longitudinal edges of the web 81 extend beyond the layers of cured
polymeric foam 17 to form ridges 58 which are adapted to fit within
mating grooves 62 of the cap 16 (see FIGS. 45 and 46) and form a
seal preventing intermixing of various liquid or semi-solid
compositions in the cured polymeric foam layers.
FIGS. 39 and 40 correspond to FIGS. 32 and 33, the essential
difference being that the cap 16 is not to be used as a handle
extension in view of the permanently affixed elongated base handle
84.
FIGS. 41-44 correspond to FIGS. 37 and 38, except that this
embodiment has a permanently affixed elongated base handle 84.
Although the invention has been described with reference to the
foregoing preferred embodiments, many modifications and variations
may be made thereto without departing from the spirit and scope of
the invention. All such modifications and variations are intended
to be included within reach of the appended claims.
* * * * *