U.S. patent application number 11/225747 was filed with the patent office on 2007-03-15 for face rest with gel fill.
Invention is credited to Taline B. Nikolopoulos.
Application Number | 20070056108 11/225747 |
Document ID | / |
Family ID | 37853553 |
Filed Date | 2007-03-15 |
United States Patent
Application |
20070056108 |
Kind Code |
A1 |
Nikolopoulos; Taline B. |
March 15, 2007 |
Face rest with gel fill
Abstract
The present invention relates to a face rest comprising an
external containment system ("ECS") having a fixed internal volume
that is substantially filled with a gel fill. The face rest may be
used alone or may be permanently or removably attached to a therapy
table or other apparatus. The ECS may further include an internal
containment system with structural extensions forming one or more
channels and/or cells, and/or a contoured containment system in the
internal portion of the face rest to better accommodate a user's
face. Other fill such as foam padding may be included underneath
the ECS.
Inventors: |
Nikolopoulos; Taline B.;
(Brookfield, IL) |
Correspondence
Address: |
LADAS & PARRY LLP
224 SOUTH MICHIGAN AVENUE
SUITE 1600
CHICAGO
IL
60604
US
|
Family ID: |
37853553 |
Appl. No.: |
11/225747 |
Filed: |
September 13, 2005 |
Current U.S.
Class: |
5/644 ;
5/636 |
Current CPC
Class: |
A61H 2205/022 20130101;
A61H 37/00 20130101; A61H 2201/0207 20130101; A61H 2201/0214
20130101; A61H 2205/025 20130101; A47G 9/1054 20130101; A61H
2201/1604 20130101 |
Class at
Publication: |
005/644 ;
005/636 |
International
Class: |
A47G 9/10 20060101
A47G009/10 |
Claims
1. A U-shaped face rest comprising an external containment system
and a gel fill, wherein the external containment system comprises
an inner portion connected to an outer portion, wherein said inner
portion comprises a U-shaped inner top surface, a U-shaped inner
bottom surface, and an inner side surface, wherein said inner side
surface is continuous with the inner top surface and the inner
bottom surface; and wherein said outer portion comprises a U-shaped
outer top surface, a U-shaped outer bottom surface, and an outer
side surface, wherein said outer side surface is continuous with
the outer top surface and the outer bottom surface; and wherein
said inner portion defines a fixed inner volume that is
substantially filled with gel fill so that said inner bottom
surface and said outer bottom surface are selected from the group
consisting of substantially flat and convex, and so that the inner
top surface does not directly contact the inner bottom surface.
2. A face rest of claim 1, wherein the face rest further comprises
an other fill having a U-shape and a top surface, wherein said top
surface of the other fill is attached to the outer bottom surface
of the external containment system.
3. The face rest of claim 1, wherein the external containment
system comprises at least one layer of a material selected from the
group consisting of doeskin vinyl, neoprene, silicone elastomer,
synthetic latex, natural latex, LYCRA.RTM., BIOCELL.RTM.,
SILTEX.RTM., plastic and thermoplastic.
4. The face rest of claim 2, wherein the other fill is selected
from the group consisting of foam padding and memory foam
padding.
5. The face rest of claim 1, wherein the gel fill is at least one
of the group consisting of silicone gel, saline, water, propylene
glycol, carbomer, triethanolamine, food grade oil, soybean oil,
elastopolymer gel, aloe vera gel, glycerin-water based gel,
non-toxic flexxum gel, and cohesive gel.
6. The face rest of claim 1, further comprising an internal
containment system.
7. The face rest of claim 6, wherein said internal containment
system further comprises a contour containment system.
8. The face rest of claim 7, wherein said contour containment
system is ergonomically contoured.
9. The face rest of claim 6, wherein said internal containment
system further comprises at least one extension.
10. The face rest of claim 9, wherein said extension is
vertical.
11. The face rest of claim 9, wherein said extension is
horizontal.
12. The face rest of claim 6, wherein said internal containment
system comprises at least one channel.
13. The face rest of claim 6, wherein said internal containment
system comprises at least one cell.
14. The face rest of claim 6, wherein said internal containment
system further comprises at least one vertical extension and at
least one horizontal extension.
15. The face rest of claim 14, wherein said internal containment
system comprises at least one channel and at least one cell.
16. The face rest of claim 1, wherein said face rest has a U-shape
selected from the group consisting of horseshoe, standard "U",
crescent, hairpin, three-sided rectangular, three-sided square,
oval and circular.
17. The face rest of claim 1, wherein said U-shape is crescent.
18. The face rest of claim 1, wherein the face rest further
comprises a housing.
19. The face rest of claim 1, wherein the gel fill has a
temperature that may be adjusted to a temperature to heat or cool a
user's face.
20. The face rest of claim 1, wherein the face rest is attached to
an apparatus.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a face rest comprising an
external containment system that is substantially filled with a gel
fill. The face rest may be used alone, or may be permanently or
removably attached to a therapy table or other apparatus.
[0003] 2. Description of the Related Art
[0004] Face rests, also known as face cushions, face cradles or as
a type of headrest, are widely used to provide support to a user's
head and neck during a session when the user is in a prone
position, or is otherwise positioned so that the user's face is
directed downward. Face rests are used in a variety of fields,
including without limitation massage therapy, sunbathing,
tattooing, chiropractic medicine, homeopathic medicine, and surgery
such as cosmetic surgery.
[0005] Face rests may be used separately from an apparatus, or may
be permanently or removably attached to or incorporated into an
apparatus in which, when in use, a user is in a prone or otherwise
face-down position. One such apparatus is a massage therapy table,
which often includes a face rest to support a user's head while the
user lies prone on the table during a massage therapy session. Face
rests are also frequently attached to an apparatus called a massage
therapy chair that allows a user to sit and lean forward, with
special cushions supporting the user's arms and a face rest for
contacting the user's face and supporting the user's head. Such
chairs allow for example a massage therapist or tattooist easy
access to a user's shoulders and upper back.
[0006] When in use, part of a user's face comes into contact with
and presses directly into a face rest. A user's face may press into
a face rest for several minutes to several hours during a
therapeutic massage session or other use of the face rest. The face
rest should conform to a user's face, and should support the user's
face, head and/or neck so that the pressure on the user's face
arising from direct contact with the face rest is comfortable and
safe.
[0007] A face rest typically includes foam padding pre-formed into
a desired face rest shape. Face rests are typically shaped into an
overall U-shape (with two opposing arms connected at one end by a
connecting portion to form a U-shape), and oriented when in use so
that the connecting portion supports the user's forehead and each
arm supports at least part of a side of the user's face. An open
space preferably in a shape similar to the face rest's U-shape
accommodates a protruding or otherwise sensitive facial area such
as a user's eyes, nose, mouth, chin. Such open space helps avoid or
minimize pressure on these areas so that users may comfortably
breathe and otherwise remain prone and preferably relaxed
throughout a therapy session. Popular U-shaped face rest shapes
include a standard "U" shape, as well as, without limitation,
horse-shoe, crescent, hairpin, three-sided rectangular, three-sided
square, open oval or open circular shapes (where "open" in this
sense means having one break or opening in the oval or circle).
[0008] Face rests are usually encased in a fitted vinyl or cloth
housing to protect the preformed foam padding. The bottom surface
of a face rest or face rest housing (U-shaped surface that does not
contact the user's face) may be permanently or removably attached
to a flat, rigid base to support the face rest and to allow the
face rest to be removably or permanently attached to or
incorporated into a desired apparatus such as a massage therapy
table. Typically, such base has a shape that is the same as or
similar to the shape of the face rest it will attach to. Removable,
washable or disposable covers may further be placed over the top
surface of the face rest or face rest housing, where a user's face
contacts the face rest or housing, so that a user's face comes into
contact with a clean cover surface when the face rest is used.
[0009] A variety of face rests or similar devices are known to
date. U.S. Pat. No. 4,333,638, issued Jun. 8, 1982, discloses a
padded, three-sided head support as an attachment to a massage
therapy table. U.S. Pat. No. 6,023,801, issued Feb. 15, 2000,
discloses a horse-shoe shaped face rest with foam padding and
adjustable length legs for adapting the face rest to accommodate a
patient's face while medical treatment is performed on a prone
patient. The face rest may include a fan to direct air across the
patient's face, and/or speakers to conduct musical sounds through
the patient's facial bones. U.S. Pat. No. 6,230,349, issued May 15,
2001, discloses a U-shaped travel pillow having a fabric casing
stuffed with a solid material, wherein the casing has a closeable
opening so the stuffing may be removed or replaced, entirely or in
part, to adjust pillow firmness or replace old padding.
[0010] U.S. Pat. No. 6,148,460, issued Nov. 21, 2000, discloses a
bed extension device including a horse-shoe shaped face rest. U.S.
Pat. No. 6,049,926, issued Apr. 18, 2000, discloses a device for
adjusting a face rest having a stiff internal support made of
padded material such as upholstered sponge or foam rubber. U.S.
Pat. No. 6,412,127, issued Jul. 2, 2002, discloses a ring-shaped
face rest with bead-filled "arms" for supporting other parts of a
user's body. The face rest portion of the device includes a rigid
foam padding or an inflatable ring-shaped base with flexible
plastic tubes and beads on top of the base. U.S. Pat. No.
5,771,514, issued Jun. 30, 1998, discloses a neck and head support
pillow for a supine user having laterally dispersed elongate fluid
chambers that may be adjusted with inflatable air chambers.
[0011] U.S. Pat. Nos. 4,783,866 and 4,858,259, issued Nov. 15, 1998
and Aug. 22, 1989, respectively, disclose a therapy pillow for
treating headaches with extensions to fit around the back and a
portion of the sides of a user's neck and a pocket for a removable
U-shaped bag filled with a temperature retaining material. U.S.
Pat. No. 5,613,501 discloses a surgical face support device having
concave upper and lower surfaces and several built-in central
indentations or openings to relieve pressure on the eyes, ears,
nose and mouth of a prone patient. When in use, the lower portion
of the face support deforms, causing pressure against the side of
the face of a patient.
[0012] A variety of face rests are commercially available, most of
which are made of foam padding. Bare Paws Massage Co. and Massage
Warehouse.com advertise the sale of face rests made of foam padding
for use on a standard massage therapy table. Some face rests
include Tempur-Pedic.RTM. foam padding, highlighted as useful
because the foam padding has "memory" cells that make the padding
more resilient than other foam padding. Also, thin gel face rest
cover sets that may be heated or cooled and then placed on top of a
face rest are commercially available. Pisces Productions advertises
the sale of inflatable face rests for use with a standard therapy
apparatus.
[0013] One disadvantage of existing face rests is that, with
repeated use, face rests filled with foam padding lose elasticity
and shape quickly. Over time, foam or other solid face rest padding
will compress and become matted down and hard, so that it does not
offer safe and comfortable contact with the user's face during a
massage therapy or other session. If a hard, rigid base structure
is present, the hardened, compressed padding of a face rest may
allow a user's face to press against the face rest's hard base
structure, potentially causing pain or injury to the user. Use of a
hardened or compressed face rest is uncomfortable for the user, and
may result in facial injury.
[0014] The use of gel covers on a face rest may also be
problematic. Gel covers are thin and may puncture easily and leak
on a user. Gel covers offer little support to a user's face, so
that when placed on top of a compressed foam-padding face rest, the
user may still experience discomfort and even injury. A gel cover
may move or even slide around on the face rest, or may fit only on
top of one type of face rest, instead of working with face rests of
different shapes and sizes and having different contours.
Inflatable face rests may develop slow air leaks, requiring
constant monitoring even during a single session. Also, the
interior pressure of inflatable face rests may be difficult to
adjust or difficult to maintain; too high or too low a pressure
inside the face rest may result in discomfort or injury for a
user.
BRIEF SUMMARY OF THE INVENTION
[0015] The present invention relates to a U-shaped face rest
comprising an external containment system having a fixed internal
volume that is substantially filled with a gel fill. In one
embodiment of the present invention, the face rest is made entirely
of an external containment system and gel fill. In a further
embodiment, an internal containment system is present, with one or
more extensions placed within the fixed internal volume of the
external containment system that may form one or more channels or
cells, for instance to help hold the gel in place and to reduce gel
fill displacement within the face rest. In yet another embodiment,
the external containment system with gel fill is positioned in the
upper portion of the face rest for the most proximate contact with
a user's face (with or without an internal containment system) and
"other fill" is positioned underneath the external containment
system with gel fill, including but not limited to conventional
padding such as foam padding used in commercially available face
rests.
[0016] The present invention may be used in the same manner, and
with the same therapy or other apparatus, as a face rest presently
known in the art. Using gel fill in a face rest allows the face
rest to retake its original dimensions after a session with a user.
The gel fill does not harden and compress over time like a foam
padding-filled face rest, and conforms comfortably to a user's face
when in use. The temperature of the gel fill may be adjusted by
heating or cooling the face rest to provide further benefit to a
user. Without being bound by theory, the surface tension of a gel
fill may provide superior support to a user than conventional
padding, by providing specific point-of-contact support. In another
embodiment, the face rest may be contoured to provide ergonomic or
other beneficial point-of-contact support for a user's face, and/or
may otherwise provide for support that accommodates the individual
face type of each user. The outer surface of the external
containment system of the face rests of the invention may be made
of a material that may be wiped clean and/or sterilized, improving
on surfaces such as cloth housing and foam padding that may serve
as a breeding ground for infectious bacteria and the like, or as a
depository for massage oils or lotions, or the combined sweat and
oils of a user's face.
[0017] The face rest and materials relevant to this invention and
described herein may be made by conventional methods. For instance,
the external containment system and internal containment system may
be made by conventional plastic or other molding techniques.
Similarly, a housing and other materials of the face rest may be
made with conventional materials.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0018] The drawings described below and included herein are meant
to illustrate several preferred embodiments of the present
invention. The drawings are not meant to limit the invention to
only these embodiments. Other objects and aspects of the invention
will become apparent from the following description of embodiments
set forth in the drawings:
[0019] FIG. 1 is (A) a top view of a hairpin-shaped face rest, (B)
a top view of a standard "U" shaped face rest, (C) a perspective
top view of a contoured horse-shoe shaped face rest, and (D) a
perspective side view of a contoured crescent-shaped face rest.
[0020] FIG. 2 is a perspective side view of a crescent-shaped face
rest including an external containment system and a gel fill.
[0021] FIG. 3 is a perspective side view of a crescent-shaped face
rest including an external containment system, a gel fill and an
other fill.
[0022] FIG. 4 is a perspective side view of a crescent-shaped face
rest including an external containment system, an internal
containment system comprising channels, and a gel fill.
[0023] FIG. 5 is a perspective side view of portion of a
crescent-shaped face rest including an external containment system,
an internal containment system comprising cells, a gel fill and an
other fill.
[0024] FIG. 6 is a perspective top view of a crescent-shaped
contoured face rest including an external containment system, a
contour containment system, and gel fill.
[0025] FIG. 7 is a perspective top view of a crescent-shaped
contoured face rest including an external containment system, a
contour containment system, and gel fill.
DETAILED DESCRIPTION OF THE INVENTION
[0026] As used herein, a "face rest" of the present invention
comprises an external containment system having a fixed inner
volume that is substantially filled with gel fill, so that when in
use a user's face may press into the external containment system,
and the underlying gel will conform to and support the user's face
and head. Various embodiments of the face rest are illustrated
below, but are not in any way meant to limit the present
invention.
[0027] The face rest is preferably about 10 to about 14 inches wide
at its widest part, more preferably about 11 to 13 inches wide, and
most preferably about 12 inches wide. For the purposes of this
invention, the width of the face rest is the distance between the
farthest outer part of one arm of the "U" shape to the farthest
outer point of the other arm of the "U" shape. The face rest is
preferably about 10 to 14 inches long at its longest part, more
preferably about 11 to 13 inches long, and most preferably about
11.5 inches long. The face rest is preferably about 1.5 to about
4.5 inches deep (at farthest point, from the outer bottom surface
to the outer top surface), more preferably about 2 to 4 inches
deep, and most preferably about 3.5 inches deep. The addition of a
housing or cover or other accessory is not meant to be included in
measuring any of these preferences.
[0028] As herein defined, "external containment system" or "ECS" is
the U-shaped structure of the face rest having a fixed inner volume
that contains the gel fill. The external containment system is a
thin, skin-like structure comprising an outer portion connected to
an inner portion. The outer portion includes in part a U-shaped
outer top surface where a user's face will press into the face rest
(or into an appropriate housing or other covering on the face
rest), as well as a U-shaped outer bottom surface and an outer side
surface that is continuous with the outer top and bottom surfaces.
"Continuous with" means unbroken, without gaps or holes large
enough to allow the gel fill to escape from the ECS, and may
include the existence of a seam or change in material or other
structural embodiments of the ECS. The inner portion comprises a
U-shaped inner top surface, a U-shaped inner bottom surface, and an
inner side surface that is continuous with the inner top surface
and the inner bottom surface. The inner portion defines a fixed
inner volume within these continuous inner surfaces, wherein this
fixed inner volume is substantially filled with gel fill so that
the inner bottom surface and outer bottom surface are overall
substantially flat or convex, preferably convex. "Substantially
filled" means that the top of the containment system does not touch
the bottom, either at rest or when in use. Preferably, at least 70%
of the inner fixed volume of the ECS is filled with gel fill, more
preferably at least 75%, even more preferably at least 80%, even
more preferably at least 86%, even more preferably at least 90%,
even more preferably at least 93%, even more preferably at least
97%. The inner fixed volume of the ECS may be filled with about 99%
to about 100% gel fill. The fixed inner volume only relates to the
space inside the ECS that may be filled by gel fill, and does not
include space taken by structures such as those provided by an
internal containment system. Overall, the inner and outer top
surfaces of the ECS are also substantially flat or convex.
"Substantially flat" means flat or only very slightly convex or
concave, with the exception of the bottom surfaces of the ECS,
which are not concave overall in view of pressure such as
gravitational pressure of the gel above the bottom surfaces
pressing the bottom surfaces flat or convex. The inner surfaces of
the ECS are in direct contact with gel fill and/or, where present,
may be in direct contact with the internal containment system.
[0029] The ECS is preferably about 0.7 mm to about 8 mm thick, more
preferably about 1 to 5 mm thick, and most preferably about 2 to 3
mm thick. The thickness of the ECS is in part determined by the
toughness and flexibility of the material used to form the ECS.
Thickness in this context refers to the straight-line distance
between a given outer surface and given inner surface of the ECS
"skin", without including any of the fixed inner volume or internal
containment system of the ECS. In its most basic form, the ECS is
similar to a flexible skin providing an overall U-shape and
containment for the gel fill, and allowing the gel fill to provide
much or all of the support for a user's face when in use.
Preferably, the ECS has a substantially uniform thickness
throughout the face rest, so that the outer and inner surfaces of
the ECS have a similar shape. The term "substantially uniform
thickness" is meant to include natural manufacturing and other
thickness variations that may occur when making the face rest, so
that for instance a desired ECS thickness of 5 mm is substantially
uniform if some areas are for instance 4 mm thick and other areas
are for instance 6 mm thick.
[0030] The external containment system may be made from one or more
layers of one or more flexible materials such as doeskin vinyl,
neoprene, vinyl, silicone elastomer, synthetic or natural latex,
Lycra.RTM., Biocell.RTM., Siltex.RTM., plastic, thermoplastic,
ultraleather, or other materials that will contain the gel fill,
even under prolonged pressure from a user's face when a user is
using a face rest of the invention, and that are flexible enough to
allow the underlying gel to conform to and support a user's face.
Preferably, the external containment system is a double layer of
vinyl or ultraleather. More preferably, the external containment
system is a double layer of ultraleather. The external containment
system may be transparent or opaque, clear or colored. Preferably,
the external containment system is non-toxic and otherwise not
harmful to human skin. The outer and inner portions of the ECS are
inherently connected to each other, where the ECS comprises only
one layer of flexible material. Where the ECS comprises a double
layer, the layers (and inner and outer portions of the ECS) may be
connected by direct contact, with or without a substance between
the layers such as but not limited to gel, an other fill, a gas
such as air.
[0031] Similar to the foregoing discussion of the face rest, the
ECS filled with gel fill provides the overall dimensions of the
face rest, and is preferably about 10 to about 14 inches wide at
its widest part, more preferably about 11 to 13 inches wide, and
most preferably about 12 inches wide. The ECS is preferably about
10 to 14 inches long at its longest part, more preferably about 11
to 13 inches long, and most preferably about 11.5 inches long. The
ECS is preferably about 1.5 to 4.5 inches deep, more preferably
about 2 to 4 inches deep, and most preferably about 3.5 inches
deep. In the event that the outer bottom surface of the ECS is
attached to other fill, as discussed below and throughout the
application, the ECS is preferably about 1.5 to 2.5 inches deep and
the other fill is preferably about 2 to 2.5 inches deep.
[0032] As herein defined, "U-shaped" means a shape having two
opposing arms connected by a connecting portion at one end of each
arm to generally form a U-shape with an open space to accommodate
for instance a user's eyes, nose, mouth, chin. The opposing ends
may taper and/or curve toward each other or even touch, but are not
continuous with each other and may part for instance when in use to
accommodate a user's chin. The open space is defined by the
U-shaped outer top surface, the U-shaped outer bottom surface and
the outer side surface which is continuous with the outer top and
outer bottom surfaces, of the ECS. A U-shaped object of the present
invention includes but is not limited to a standard "U",
horse-shoe, crescent, or hairpin shape, rectangular or square shape
or other polygonal shape having an open space as described above.
Preferably, the U-shape of the present invention is symmetrical,
however, so long as the proper support is provided to a user's face
with an appropriately sized open space, as discussed throughout
this application, the shape need not be symmetrical. Several
examples of U-shaped face rests of the present invention are set
forth in FIG. 1 and several of the other Figures herein.
[0033] The open space defined by the inner arc of the ECS is wide
and long enough to accommodate a user's eyes, nose, mouth, chin,
preferably like a conventional face rest, and not so wide or long
that the face rest cannot support a user's face and head.
Preferably, the support is provided primarily by contact with the
frontal area of the skull (forehead) and with the zygomatic bones
(cheekbones). Due to the natural contour of most human faces,
contact is preferably not made with the lower part of the frontal
part of the face, or below the cheekbones.
[0034] The shape of the open space is preferably similar to or the
same as the outer shape of the entire face rest, however, the shape
of the open space may vary from the outer shape of the face rest.
The open space may have a uniform width, or may have a width that
varies throughout the face rest. Preferably, the width of the open
space broadens and then tapers toward the open ends of the arms of
the face rest. Preferably, the open space has a width of from about
3 to about 6 inches. Even more preferably, the open space has a
width of from about 4 to about 6 inches wide at a width near the
connecting portion (where in use a user's forehead would be
placed), and of from about 3 to about 4 inches wide at the open
ends (where in use a user's chin would be placed). Even more
preferably, the width of the open space near the connecting portion
is about 6 inches, the width of the open space at the open ends of
the arms of the ECS is about 3.5 inches, and the width of the open
space tapers between the connecting portion and the open ends of
the arms, after broadening very near the connecting portion to
about 6.5 inches. The open space may have a uniform length, or may
have a variety of lengths. Preferably, the length of the open space
from the outermost edge of the connecting portion to the open ends
is about 7 to about 10 inches, preferably about 8 to about 9
inches, and most preferably about 8.5 inches. The depth of the open
space varies with the depth of the overall head rest and ECS, and
may vary if a contour containment system is present. The dimensions
of the open space are preferably the same or similar to those of a
commercially available face rest, so that a face rest of the
present invention may be used with a commercially available
housing, apparatus and other similar items.
[0035] As herein defined, "a fixed inner volume" refers to the
volume enclosed and defined by the continuous inner portion of the
ECS (having a U-shaped top surface, a U-shaped bottom surface, and
an inner side surface continuous with the inner top and inner
bottom surfaces) and is available for filling by a gel fill. The
inner volume is fixed because the ECS inner portion is a continuous
structure that does not include openings large enough to allow the
gel fill to exit the face rest. The inner fixed volume does not
include space taken up in embodiments having structures such as
those provided by an internal containment system, however, the
space within for instance channels or cells or contours inside an
internal containment system may be filled with gel fill and is
therefore part of the fixed internal volume of the ECS. The amount
of gel fill needed to fill the ECS may depend upon the physical
characteristics of the gel fill used, for instance how dense the
respective gel fill is, and the exact inner fixed volume of a given
ECS. In any event the inner fixed volume is "substantially" filled
when there is enough gel fill present to support a user's face as
described throughout this application. Preferably, at least 70% of
the inner fixed volume of the ECS is filled with gel fill, more
preferably at least 75%, even more preferably at least 80%, even
more preferably at least 86%, even more preferably at least 90%,
even more preferably at least 93%, even more preferably at least
97%. The inner fixed volume of the ECS may be filled with about 99%
to about 100% gel fill. As the ECS preferably has a substantially
uniform thickness throughout the face rest, the inner top surface
and inner bottom surfaces preferably have substantially the same or
similar U-shape as the outer top and bottom surfaces of the ECS.
Similarly, the inner side surface preferably has the same or
similar shape as the outer side surface, so that a face rest of the
present invention outwardly resembles a conventional face rest.
Each surface of the inner portion is continuous with another inner
portion surface, so that the gel fill is entirely contained within
the fixed inner volume of the ECS.
[0036] As herein defined, "gel fill" means a gel, gel-like,
semi-liquid, liquid or similar substance contained within the ECS.
When the face rest is in use, the gel fill cushions and supports a
user's face, as discussed throughout this application. The gel fill
includes but is not limited to silicone gel, saline, gels found in
conventional face masks including water, propylene glycol, carbomer
and triethanolamine, food grade oil such as soybean oil,
elastopolymer gel, aloe vera gel, glycerin-water based gel,
non-toxic flexxum gel (available from Seymour Manufacturing
International), cohesive gel, and compatible combinations thereof.
Cohesive gel is a form of silicone that, due to tighter molecular
bonds in the silicone, is semi-solid. When it is cut it is similar
to cutting into a gummy bear. If the ECS or cells of the internal
containment system or other face rest structures rupture, the
cohesive gel, also referred to as `high-strength gel`, will not
leak but rather will maintain its shape and integrity. Preferably,
the gel fill is non-toxic and otherwise not harmful to human skin,
and will not leak in the event of puncture of the face rest.
[0037] Different gel fills may be used with different external
containment systems. For instance, in one preferred embodiment of
the invention the ECS comprises neoprene substantially filled with
a saline gel fill, wherein the neoprene has one or more layers that
are not more than 4 mm thick, more preferably not more than 2 mm
thick, and even more preferably about 1 mm thick. In another
preferred embodiment, the ECS comprises silicone elastomer
substantially filled with a silicone gel fill, wherein the ECS is
about 5 mm thick, preferably about 3 mm thick, and more preferably
about 1 mm thick throughout the ECS.
[0038] As herein defined, "other fill" means non-gel fills,
preferably those that are conventionally used in face rests,
including without limitation solid padding such as foam padding,
beads, styrofoam padding or memory foam padding such as
TempurPedic.RTM. padding, and gaseous padding such as air. The face
rest may include other fill attached to the outer bottom surface of
ECS. In such an instance, the external containment system having
the gel fill may be attached to the other fill by a housing or by
some attachment system such as a loop and hook system such as
Velcro.RTM., adhesive, snaps, buttons, chemical bonding, or other
attachment systems suitable to the external containment system and
the other fill. The ECS may also include an additional structure,
under the surfaces containing the gel fill, for removably or
permanently holding the other fill.
[0039] As herein defined, "internal containment system" means an
internal structure within the fixed inner volume of the ECS that
provides channels, cells, or other compartments for instance to
control gel displacement when the face rest is in use. An
"extension" is a structure of the internal containment system, as
discussed in FIGS. 4 and 5 below; a "vertical" extension is a
structure extending at least in part between the inner bottom
surface and the inner top surface, or otherwise generally extending
in a direction that is more parallel to the side surface than the
top or bottom surfaces of the ECS; a "horizontal" extension is a
structure extending at least in part from an inner side surface
toward another inner side surface, or otherwise generally extending
in a direction that is more parallel to the top and bottom surfaces
of the ECS than the side surface. Extensions may be curved or
straight. Preferably, extensions extend from one inner surface of
the ECS to another inner surface of the ECS. Without being bound by
theory, generally straight extensions will provide more rigid
control of gel displacement within the fixed inner volume of the
ECS than curved extensions, which allow for more gel displacement.
A channel is made where the extensions do not intersect one
another. A cell is made when vertical and horizontal extensions
intersect and enclose a portion of the fixed inner volume of the
ECS.
[0040] An internal containment system is in direct contact with gel
fill, and may be included in any gel filled portion of the face
rest. An internal containment system may be made from one or more
layers of one or more flexible materials suitable for use with the
external containment system, as discussed throughout this
application, as well as from one or more layers of one or more
flexible materials permeable to a gel fill, including but not
limited to a flexible mesh such as a nylon mesh. The internal
containment system may be transparent or opaque, clear or colored.
Preferably, the internal containment system is non-toxic and
otherwise not harmful to human skin.
[0041] As herein defined, "contour containment system" is an
internal containment system near the inner arc and open space of
the face rest and the outer top surface of the ECS, as discussed
for instance in FIG. 1(C) herein, contoured in part to comfortably
accommodate a user's face. Such contour may have a slope that is
steep or shallow, or intermediately angled, and/or that is
multi-bevelled or smooth or ergonomically contoured. Preferably,
the contoured internal portion of the contour containment system
has an intermediate slope and an ergonomic contour. Any material
useful in the internal containment system may also be useful in the
contour containment system. In one preferred embodiment, an
internal containment system is present only as a contour
containment system, so that the inner fixed volume of the ECS is
free of internal containment system structures except near the
contoured internal portion of the face rest. A contour containment
system may be transparent or opaque, clear or colored. Preferably,
the contour containment system is non-toxic and otherwise not
harmful to human skin.
[0042] Preferably, the contour containment system is about 0 to 3
inches wide, more preferably about 1 to 2.5 inches wide, and most
preferably about 1.5 to 2 inches wide. Preferably, the contour
containment system when present is about 0 to 14 inches long on
both sides of the inner arc forming the open space of the face
rest, more preferably from about 2 to 8 inches long, and even more
preferably from about 4 to 6 inches long. The contour containment
system may be about 0 to 4.5 inches deep, preferably about 1 to 4
inches deep, even more preferably about 2 to 3 inches deep. The
dimensions of a contour containment system may vary throughout a
face rest of the present invention, as desired, and for instance as
shown in FIGS. 1(D), 6 and 7. The dimensions of a contour
containment system may also be more uniform throughout a face rest
of the present invention, for instance as shown in FIG. 1(C). The
steepness of a slope of a contour containment system may be from 0
to 90 degrees from the surface of the external containment system,
preferably 10 to 80 degrees, more preferably 20 to 60 degrees, more
preferably 30 to 50 degrees, and still more preferably about 35
degrees on average.
[0043] A "housing" may be made of cloth or vinyl, or another
material suitable for encasing the external containment system and,
if present, the other fill and contoured portions of the face rest.
Materials suitable for the housing include Sierra doeskin fabric,
UltraTouch.RTM. (a polyurethane fabric), and Tufflex.RTM. fabric,
all available from Oakworks, Inc.
[0044] One preferred embodiment of the present invention is a
crescent-shaped face rest having a contoured inner arc as in FIG.
1(C), with gel fill and an internal containment system comprising
cells. The top surface of the face rest, including the contoured
inner arc, is about 12 inches wide from side to side at its widest
point, and about 11 inches from the top of the top surface to
bottom. The face rest is about 3 inches high, and has a contoured
inner arc that slants for 2 inches at a 45 degree angle toward the
bottom surface of the face rest.
[0045] The Figures illustrate several preferred embodiments of the
present invention, but are not meant to limit the invention in any
way from the disclosure of the application as a whole. Similar
parts are referred to by the same numbers throughout the enclosed
drawings.
[0046] FIG. 1 shows (A) hairpin-shaped, (B) standard "U" shaped,
(C) contoured horse-shoe shaped and (D) contoured crescent-shaped
face rests 10. Each face rest 10 shows an external containment
system 20, a gel fill 40, and an inner arc 60 of a face rest 10.
FIGS. 1(C) and 1(D) show an angled contoured inner arc 70 made by a
contour containment system 72 inside the ECS 20 of the face rest
10. The contoured inner arc 70 seen in FIGS. 1 (C) and 1(D), and
other Figures herein, may be used on other face rest shapes of the
present invention, and are meant to illustrate some of the ways in
which the inner arc may be contoured, and a contour containment
system may be shaped, in the face rests of the present invention.
The contoured inner arc 70 of FIG. 1(C) is a particularly preferred
contour of the invention.
[0047] FIGS. 2 to 5 show preferred embodiments of a face rest 10 of
the present invention with a housing 80 and a transparent ECS 20,
so that structures under the ECS and inside the face rest are
visible. However, as discussed throughout this application, the ECS
may be transparent, opaque, colored, or as otherwise desired in
this regard. FIG. 2 shows a crescent-shaped face rest 10 with a
portion of a housing 80 cut away to reveal the external containment
system 20 and gel fill 40 of the face rest 10. In this Figure, the
gel fill 40 is represented as a shaded area to distinguish the gel
fill 40 from the housing 80. However, in all Figures, the gel fill
40 is always contained by an external containment system 20. In
this and any other Figure, a cut away portion of a housing,
external containment system or other structure is represented by
two jagged lines. FIG. 3 shows a crescent-shaped face rest 10 with
a portion of a housing 80 cut away to reveal the external
containment system 20, a gel fill 40, and an other fill 50 that is
all foam padding. The inner arc 60 of the face rest 10 is not
contoured in this drawing, but may be contoured, as may any inner
arc of a face rest of the present invention.
[0048] A preferred embodiment of the present invention is a
crescent-shaped face rest as shown in FIG. 2, wherein the external
containment system is made of one layer of doeskin vinyl and the
gel fill is a cohesive gel (a form of silicone gel that is a high
strength gel). The face rest is about 12 inches wide at its widest
part, about 11.5 inches long, and about 3.5 inches deep.
[0049] FIG. 4 shows a crescent-shaped face rest 10 with a portion
of a housing 80 cut away to reveal the external containment system
20 and gel fill 40 of the face rest 10, as well as an internal
containment system 30 made of straight, vertical extensions 32 of
the external containment system 20, creating "channels" in the gel
fill. An extension is part of the internal containment system and,
as discussed throughout this application, may be impermeable to the
gel, for instance like the external containment system 20, or may
allow for gel fill movement between the channels. Preferably, an
extension does not allow gel fill to move as freely as gel fill
without the internal containment system. In another embodiment of
the invention, not shown here, straight horizontal extensions of
the external containment system form the internal containment
system, rather than straight vertical extensions. In yet other
embodiments of the invention, the horizontal or vertical extensions
are curved instead of straight, and/or do not extend completely
across the fixed inner volume of the ECS but instead extend only
across part of the inner fixed volume of the ECS. In another
embodiment, the extensions need not be attached to the ECS.
[0050] FIG. 5 shows a portion of a crescent-shaped face rest with a
portion of a housing 80 cut away to reveal the external containment
system 20 and gel fill 40 of the face rest, as well as an internal
containment system 30 made of straight vertical extensions 32 and
horizontal extensions 34 that extend between and are attached to
one or more straight vertical extension(s) 32, so that the internal
containment system 30 is a grid with "cells" having gel fill.
Preferably, the sides of the cells are at least 1 cm long,
preferably at least 2 cm long. As discussed above, an extension may
be impermeable to a gel fill, for instance like an external
containment system, or may allow for gel fill movement between the
cells. Preferably, an extension does not allow gel fill to move as
freely as gel fill without an internal containment system. In other
embodiments of this invention, a vertical extension and/or
horizontal extension is curved, and/or does not extend completely
acrossed the fixed inner volume of the ECS but instead extend only
across part of the inner volume of the ECS. In another embodiment,
the extensions need not be attached to the ECS. Also, the
extensions may be attached to only other internal containment
system structures. The housing contains both the external
contanment system 20 and the other fill 50.
[0051] A preferred embodiment of the present invention is a
crescent-shaped face rest as shown in FIG. 5, wherein the external
containment system is made of one layer of doeskin vinyl and the
gel fill is a cohesive gel (a form of silicone gel that is a high
strength gel). The face rest is about 12 inches wide at its widest
part and about 11.5 inches long. The external containment system
substantially filled with gel fill is about 21/4 inches deep, and
the other fill, made of standard foam padding, is about 11/4 inches
deep. A vinyl housing is also present. The internal containment
system is made of silicone shell, and completely contains the gel
fill with cells about 1/2 inch square throughout the entire inner
fixed volume of the external containment system.
[0052] FIGS. 6 and 7 show a crescent-shaped contoured face rest
with an external containment system 20, a contour containment
system 72 including a contoured inner arc 70, and a gel fill 40.
The contoured inner arc 70 of FIG. 6 reaches, in part, away from
the inner arc 60 of the face rest 10, without contacting the outer
arc 62 of the face rest 10. The contoured inner arc 70 of FIG. 7
comprises gel fill 40 and reaches, in part, away from the inner arc
60 of the face rest 10, making contact with the outer arc 62 of the
face rest 10.
[0053] Having described preferred embodiments of the invention it
is to be understood that the invention is not limited to those
precise embodiments, and that various changes and modifications may
be effected therein by one skilled in the art without departing
from the scope or spirit of the invention as defined in the
application including the claims.
* * * * *