 |
Description  |
|
|
BACKGROUND OF THE INVENTION
1. Field of the invention
This invention relates to furniture, specifically to convertible
multi-purpose furniture comprising a plurality of attached cushions which
may be folded for transport and storage.
2. Discussion of Prior Art
Many children and adults spend considerable time in prone, supine and
intermediate positions watching TV, reading, writing, computing, playing
games or musical instruments, exercising, resting, sunbathing, and the
like. Heretofore, in order to meet the body support requirements of these
positions, it has been customary to utilize a plurality of pillows and
cushions, which, however, are cumbersome, unwieldy and of limited
functional effectiveness. In the case of prone lying, persons also
frequently resort to leaning on their forearms while raising and
straightening their upper bodies to permit the pursuit of activities
requiring frontal vision. This forearm-support method, however, requires
considerable and fatiguing muscular effort, as it requires continuous
isometric contraction of the triceps brachii muscles and also places
prolonged hyperlordosic strain on the lower back, as well as concentrated
and painful pressure on the elbows.
While various multiple-cushion foldable mats, mat-headrest combinations and
other mattress and lounging devices have been taught in prior art to
effect multi-positional body support, none provide adequately for both
prone and supine lying, and various other static and dynamic positioning
requirements, particularly with respect to support of the head. U.S. Pat.
No. 3,003,815 to Zinn, discloses an article of bulky proportions which
appears to offer negligible comfort when used in the prone position, since
it places undue pressure on the laryngeal prominence of the neck. The
device is also predicated on dubious assumptions about the resilience and
durability of fabric-covered polyurethane foam subjected to unusual
stresses over time. U.S. Pat. No. 4,171,549 to Morrell and Gray appears to
provide a desirable degree of positioning flexibility, and bears a slight
visual resemblance to my invention, however, this device is intended
solely for supine lying, and being of non-attached parts and "bean-bag"
construction, would be awkward to transport and would require frequent
refilling with bean pellets to maintain adequate resiliency, both of which
factors severely limit its utility.
U.S. Pat. No. 2,589,013 to Martin describes a three-piece attached cushion
system intended for use when sitting upright in an automobile,
particularly when watching a drive-in movie. Although generically similar
to my invention, it lacks an independent support for its uppermost
flexibly-hinged pillow, which makes it ill-suited for prone and supine
lying.
U.S. Pat. No. 4,518,203 to White is representative of a variety of
multi-cushion adjustable lounging devices which are comparatively bulky,
relatively difficult to adjust, and which do not provide for prone lying
with the lower back supported in a desirable attitude of moderate
extension.
U.S. Pat. No. 4,411,221 to Enste teaches a "Child Support Wedge" with
multi-positioning modalities, but this device is large, cumbersome,
expensive to manufacture, and lacking a head-support feature when used in
the prone position. It is designed primarily for severely handicapped
individuals.
Apart from the above referenced and other still less apposite patented
devices, there are several apparently unpatented therapeutic
multi-positional wedges and cushions currently under manufacture; those
bearing the closest resemblance to my invention are probably the "OB Mat,"
the "Grasshopper," the "Thera-Wedge," and various "Wedges," all made by
the Tumble Forms Division of Preston Corporation of Clifton, N.J. These
are all high-quality products, however, being intended for specialized
medical use, they suffer from a number of deficiencies when considered
against the objects of my invention. For example, they lack adequate head
support, are of oppressively firm density for extended use, are coated
with a tactually unappealing material, exude an unpleasant odor, and are
heavy, bulky and relatively expensive. Finally, there is an apparently
unpatented article called the "Frontal," formerly offered for sale by
Westnofa USA Inc., of Niles, Ill., which reputedly combined a wedge-shaped
upper body cushion with a facial mask containing eye and nose openings,
thereby permitting prone lying while reading. This product, however, has
been discontinued and its manufacturers will disclose no further
information on its construction. It would appear to have offered no head
support for supine lying, an important object of my invention, and
suffered other deficiencies which prevented it from finding commercial
success.
While the above survey of patents and products is not exhaustive, it does
cover to my best knowledge that prior art which bears closest resemblance
in appearance and proposed function to the objects of my invention, which
are to provide a unitary multi-positional support device that:
(1) May be comfortably used in both prone and supine positions, and which,
through a simple adjustment, will also provide head support under both
conditions.
(2) Enables a user to be supported in a variety of positions other than
prone or supine lying, including but not limited to cross-legged or other
kinds of sitting, kneeling, and lying on the side.
(3) Is light and compact, and so may be easily transported and stored,
further adding to its convenience and utility.
(4) Obviates the need for a plurality of conventional room furniture,
thereby freeing up valuable space and encouraging healthy physical
movement.
(5) May benefit persons suffering from respiratory, cardiac or other
medical conditions who need to sleep, read, watch TV, or conduct other
activities in bed or elsewhere in a raised or semi-reclining supine
position.
(6) May aid in preventing or relieving lower back pain by permitting back
sufferers to lie prone in a position of moderate hyperlordosic extension,
and also enable them to more readily perform certain remedial therapeutic
exercises such as supine straight leg raises, knee-to-chest flexion pulls,
etc.
(7) Is of a durable and aesthetically pleasing design which may find
ergonomic utility in physical therapy, massage, and sexual intercourse.
(8) Can be used by young children for gymnastic activities such as running,
jumping, climbing and tumbling, and also in lieu of conventional
single-purpose rest mats.
(9) Provides comfort and support for persons who desire to sunbathe, read,
rest, discharge a firearm, or otherwise enjoy the outdoors, or who require
flexible positioning support within cars, vans, campers, trains,
airplanes, boats or busses.
(10) May serve as an easily cleanable bed for pets such as dogs and cats.
(11) Is economical to manufacture and hence may be readily acquired by all
who can benefit from its use. Other objects and advantages of my invention
will become apparent form a consideration of the ensuing description and
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a general view of the invention when it is open and ready for use
by a person lying in a prone attitude, with the hinged pillow shown as
broken lines as it would be adjusted for use by a person lying in a supine
attitude.
FIG. 2 is a top end view of the invention in a partially folded position.
FIG. 3 shows a person carrying the invention in its fully folded position.
FIG. 4 is a front end view showing the hinged pillow folded up and back in
the supine-lying position.
FIG. 5 is a plan view of the bottom of the invention in a fully open
position.
FIG. 6 shows a person using the invention in a prone attitude with head
raised above the hinged pillow.
FIG. 7 shows a person using the invention in a prone attitude with the head
supported on the hinged pillow.
FIG. 8 shows an individual using the invention in a supine attitude, with
the back of his head resting on the hinged pillow which has been folded up
and back.
FIG. 9 is general view of an alternate embodiment of the invention
incorporating elbow support flaps, which are shown in their open and
ready-for-use position.
FIG. 10 shows the elbow support flaps in a closed and fastened position, in
preparation for transport
FIG. 11 is an exploded general view of a second alternate embodiment of the
invention incorporating an integral forehead-support feature.
FIG. 12 shows an individual using a version of the invention incorporating
the elbow support flaps and forehead support feature.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, there is shown a typical embodiment of my
multi-positioning support device 20 comprising a substantially
wedge-shaped upper body cushion 21, with a protrusion at its thick end 27,
located beneath a hinged pillow 29. The pillow is flexibly attached to the
top edge of the end panel 22 of the upper body cushion 21 by a hinged flap
31. The upper-body cushion 21 is provided with symmetrically chamfered
corners 24 on its thick end, which provide for ergonomic arm support when
the device is used by a person in the prone position. A substantially
parallelepipedic lower-body cushion 25 is flexibly attached to the
truncated thin end 23 of the upper-body cushion 21 by means of a hinged
flap 26. The thickness of the lower-body cushion 25 is substantially the
same as that of the truncated end 23 of the upper-body cushion, which
provides for a smooth transition for body parts in contact with these
cushions. Alternatively, the invention might not include a lower-body
cushion, which could be eliminated for reasons of economy without
adversely affecting the structure or operation of the remainder of the
device.
The inner core 33 of the upper-body cushion 21, and also all other parts of
the device, shown in FIG. 2, are made preferably of urethane foam.
However, other materials may be substituted, provided they are of
sufficient compressibility to comfortably support the human body, and are
of sufficient resiliency to return to their original shapes after use. If
foamed plastics are used, the device may be foamed in place, or may be cut
into the desired shape from bulk or slab stock, as is here illustrated,
and then covered with durable fabric 34, such as Cordura Plus Brand Nylon.
Cordura Plus is a trademark of E.I. duPont deNemours & Co., Wilmington,
Del. Vacuum forming or molding techniques may also be employed to produce
the cores, and these may subsequently be coated with sprayed vinyl or
other plastics, in addition to, or in lieu of, a fabric slipcovering, for
protective or decorative purposes. It is within the scope of this
invention that the urethane foam or other core materials used within the
several parts of the device be of differing densities and degrees of
resilience, so as to provide optimum comfort for the various body parts
which they will support. For example, the density of the urethane foam in
the upper-body support cushion 21 is about 40 lbs per cubic foot, whereas
in all other sections the density is about 70 lbs per cubic foot.
The carrying handle 32 is attached to the truncated thin end 23 of the
upper-body cushion 21. This handle is preferably made of nylon or
polypropylene webbing or elasticized belting material, sewn at both ends
to the durable fabric covering 34, and is of such length that it may be
easily gripped by the hand yet can also be tucked completely within a
trough defined between the upper-body and lower-body cushions 21 and 25,
for neatness of appearance when the device is in a fully open position.
FIG. 3 depicts a person using the handle to carry the multi-positional
support device in its completely folded position. Referring to FIGS. 1 and
4, a patch 28 of hook-and-loop fastener material such as Velcro ("Velcro"
is a trademark of the Velcro Corporation, Manchester, N.H.) keeps the
pillow 29 from flapping about while being transported: note that only the
"hook" portion of the Velcro is used, with the fabric itself providing the
"loop" action, thereby obviating the need for attaching a separate "loop"
patch, which would tend to collect hair and lint.
Referring to FIG. 4, the multi-positional support device 20 is seen head-on
from the thick end 22 of the upper-body cushion 21, with the hinged pillow
29 flipped up and back, as it would be when the device was being used for
supine lying. In a preferred embodiment, the protrusion 27 is a fabric
pocket sewn directly to the lower central portion of the fabric end-panel
22 of the thick end of the upper-body cushion 21. The end-panel fabric
material lying within the sewn joint 22a is cut away so that a foam core
may be inserted through the upper-body cushion zipper opening 40 in FIG.
5, and fitted into this pocket. The foam core of pillow 29 is inserted
through zippered opening 35 on the hinged fabric end-panel of that part.
Note from FIG. 4 that the height of the hinged pillow 29 and the height of
the pillow-support protrusion 27 are approximately equal, and that
together they comprise the approximate height 36 of the thick end 22 of
the upper-body cushion 21. These proportions are not arbitrary; if the
hinged pillow had a height considerably greater than that of the
pillow-support protrusion, a person's head would be lifted to a
more-than-desirable angle when the pillow 29 was used in a supine
attitude; whereas if the hinged pillow had a height considerably less than
that of the pillow-support protrusion, a person's head would not be raised
sufficiently for comfort in that same attitude, and strain would be placed
by way of compensation on the sternocledomastoid muscles of the neck. Of
course, the hinged pillow 29 must also be able to bear directly upon the
pillow-support protrusion 27, so that the weight of the head may be
transferred to the ground or other support surface when the
multi-positional support device 20 is used by a person in a prone-lying
attitude.
FIG. 5 shows the bottom of the multi-positional support device in an opened
position. The length and width of the bottom of the upper-body cushion 21,
and that of the lower-body cushion 25, are approximately the same, which
permits the latter to be neatly folded back upon the former for ready
transport of the entire device. The zipper flaps 40 and 41 provide for the
insertion of foam core elements into the upper-body and lower-body
cushions 21 and 25, respectively. The lower-body cushion hinge 26 is shown
in a fully extended position. This hinge, as well as the hinge 31 in FIGS.
1 and 4 securing the pillow 29 to the upper-body cushion, may be
constructed of a durable fabric 34 similar to that used in covering the
rest of the multi-positional support device, provided that it is
doubled-over to make a two-sided durable continuous pivot. If the entire
device is of vacuum formed or molded construction, these hinges may be
integrally vacuum formed or molded, or else they may be made of some other
strong yet flexible material such as polypropylene or nylon webbing, which
is connected to the several sections during or after forming. Both pillow
hinge 31 and lower-body cushion hinge 26 may also take the form of
flexible zippered connections whereby the pillow 29 and lower-body cushion
25 may be easily removed for cleaning or replacement.
An alternative embodiment of my invention is shown in FIGS. 9 and 10,
including symmetrical right-parallelepiped elbow support cushions 43
flexibly attached via fabric or other hinge means 44 to the bottom 39 of
the pillow-support protrusion. In the preferred embodiment, the
elbow-support cushions 43 contain a core of open-cell urethane foam of
about the same density and thickness as that of the lower-body cushion 25,
and are covered with a durable fabric 34 similar to that used on the rest
of the device. The cushions 43 may, however, be constructed of vacuum
formed or molded open-cell foams, or of closed cell flexible plastic foams
such as Ensolite. ("Ensolite" is a trademark of Uniroyal Corp., of
Middlebury, Conn.) In the latter case, the relative thickness of the elbow
supports may be reduced, owing to the greater density and resilience of
closed cell foam.
FIG. 9 shows the elbow-support cushions 43 in their open position, as when
on is using the invention in a prone attitude on an otherwise hard
surface, such as a wood floor. The length of each of the elbow-support
cushions 43 is about the same as that of the height of the end-panel 22
(in FIG. 4) of the upper-body cushion; however, they may be made longer if
desired through the addition of one or more flexibly hinged segments. The
width of the elbow-support cushions is about the same as that of the
pillow-support potrusion. In FIG. 10, the elbow-support cushions 43 have
been raised to their upended closed position, from which it may be seen
that the width of the exposed part of the flexible fabric hinges 44 is
about the same as that of the thickness of the elbow-support cushions,
making for a tight and neat fit when the cushions are upended and fastened
together with a snap buckle 46 or other fastener secured to the ends of
their binding straps 45, which may be of elasticized rubber or other
material. In this position the entire device may be easily transported as
in FIG. 3. While in a preferred embodiment, the elbow-support cushions are
permanently attached to the underside of the pillow-support protrusion,
they could be non-permanently attached by such means as snap closures,
zippers, Velcro, or the like, if so desired for greater flexibility of
use.
FIG. 11 illustrates a second alternative embodiment of the invention,
incorporating an integral forehead-support band 51 which reduces the
weight of the head on the temporomandibular joint connecting the skull
with the jawbone when the device is used for relatively long periods by a
person in the prone position with the chin supported on the pillow. This
embodiment comprises a dimensionally stable thin base plate 47, molded or
formed from high-strength plastic, and adhesively bonded to the bottom of
the foam core of the upper-body cushion 21 and pillow-support protrusion
27. This base plate turns upwards at right angles into two symmetrical
vertical arms 53 along the two parallel edges where the plate is
contiguous with the two parallel lateral bottom exposed edges of the
pillow-support protrusion 27. Each arm 53 extends upward approximately the
height of the pillow 36, and then flairs outward, while undergoing a
reduction in width, to rounded tips 57 having a hole 54 punched
therethrough. The forehead support band 51, made of a reinforced resilient
material such as closed cell flexible foam 52 covered with a durable
fabric 34, is connected at either end to one of the arm tips 57 by means
of a bolt 55 and thumbscrew 56. The fabric covering the upper-body cushion
and pillow-support protrusion is drawn taught, wrapped under 49 and neatly
fastened to the underside of base plate 47 by fabric cement, Velcro
strips, or other means. A backing of edge-seamed low-pile carpeting or
other suitable material is then glued or otherwise adhered to the bottom
of the plate 47.
Means by which the height of the forehead-support band can be raised or
lowered to more precisely configure the band to the anatomy of individual
persons, and means by which the length of the forehead-support band can be
made longer or shorter for the same purpose, may be provided if desired.
Variations of the construction of the base plate are possible; for
example, the plate can be made of more than one element, as when it is
constructed of pieces of joined plywood. In that case, the pillow-support
protrusion may assume the form of a foam-and-fabric-covered plywood or
other rigidly constructed box, which provides cross-sectional bracing for
the vertical arms holding the forehead-support band.
The exact dimensions of the components of my multi-positional support
device have not been indicated in the drawings, since a range of sizes are
appropriate for users of different sizes and genders. Representative
critical dimensions in inches for a typical 7 year old child, and for an
average adult are, respectively, length of bottom and upper-body cushion,
29, 21; width of same, 25, 30; height of thick end of same, 5, 8; height
of truncated thin end of same, 1, 1; length of pillow, 6, 8; and width of
pillow, 41/2, 6.
In now considering the operational features of my invention, FIG. 3 shows a
person carrying the device in its completely folded position by handle 32
attached to the truncated thin end 23 of the upper-body cushion 21. While
the device is being carried, the pillow does not flap about but rather
remains contiguous to the pillow-support protrusion, by virtue of the
Velcro hook tab 28 which holds it in place. When the multi-position
support device is in this folded position it may be stored behind or
beside a sofa in a living room or den, in which case it would occupy a
minimum of space and yet be readily accessible to one who might wish to
place it on the floor when watching TV, reading, computing, exercising,
and the like. The device may also be hung by the handle 32 from a peg or
hook on the wall, making for especially quick and convenient access, as
well as providing a decorative room feature, especially in the case of
young children's rooms and preschool or elementary school settings.
When a person wishes to use my multi-positional support device, he or she
would, while still holding the handle 32 with one hand, with the other
hand extend the upper-body cushion outward and away from the lower-body
cushion in the manner shown in FIG. 2, and then release the device in
proximity to the floor or other support surface, whereupon it will assume
the open configuration depicted in FIG. 1.
FIGS. 6 and 7 show the invention being used in the chest-down or prone
attitude. In FIG. 6, the user is operating a laptop computer while resting
his lower body on the flat lower-body cushion and resting his upper body
on the inclined upper-body cushion, while his arms are supported on the
chamfered forward corners of the later cushion. The user's neck and head
are held substantially in line with the rest of his spine a short distance
above the pillow 29 which remains in a retracted position. FIG. 7 shows a
person reading a book in a similar prone attitude as the user in FIG. 6;
however, in this instance, he is supporting his chin directly on the
pillow 29. In practice, one may choose to alternate between the head-up
and head-down positions depicted in FIGS. 6 and 7 when engaged in
prone-attitude activities, or may use the invention as a rest couch by
simply turning the head to one side and placing the opposite cheek on the
pillow. It may also be used in this manner to receive a back, shoulder and
neck message by a second party.
It will be observed that regardless of the specific manner in which the
multi-position support device is used by a person in the prone attitude,
the person's lumbar spine is maintained in an attitude of mild to moderate
extension, or backward-bending, which is generally recommended by physical
therapists as a desirable exercise to counteract the debilitating effects
of prolonged flexion, or forward-bending, which modern civilization
imposes on persons during the bulk of their daily sedentary activities
such as driving and sitting at a desk. Were one to attempt to assume
similar prone attitudes to those depicted in FIG. 6 and 7 without my
invention, it would be necessary for him either to support the entire
weight of his upper body on his elbows and forearms, and suffer discomfort
and fatigue due to the concentration of pressure and prolonged muscular
effort induced thereby, or else to resort to constructing, with loose
cushions, some temporary support means. Such a makeshift support, however,
would almost certainly prove wanting, due to the inappropriate size,
density, resilience and covering of the loose cushions employed. Moreover,
these various loose cushions would either have to be removed from a sofa
or chair, creating the appearance of havoc in the room, or else be
specially purchased even though they failed to provide the utility which
their buyer actually sought.
FIG. 8 shows a person reading a magazine while using the multi-positional
support device in a supine, or chest-up attitude. It will be noted that
the pillow is now in its flipped-up-and-over position, as may be further
understood by returning to FIG. 1 and comparing the orientation of the
pillow depicted by solid lines 29 and by broken lines 30. More
particularly, the former top surface of the pillow, which received the
chin or check of the user in a prone attitude, is now the bottom surface,
which bears upon the uppermost portion of the top surface of the
upper-body cushion; and the former bottom surface of the pillow, which was
in contact with the pillow-support protrusion, is now the top surface,
whereupon the back of the head is supported when the user adopts a supine
attitude. It is a noteworthy feature of my invention that the
transformation which permits the same attached pillow to be used for both
prone and supine head support is quick and easy to achieve; specifically,
the user need only lift the pillow from its normal position and drop it
over into its alternative position for the change to be completed. No
other multi-positional support device in the prior art offers such
flexibility, convenience and utility.
In the embodiment of FIG. 9, elbow-support cushions have been provided to
eliminate any discomforting pressure on the elbows when the multi
positional support device is placed on a hard surface such as a wood floor
and used in a prone attitude for a purpose such as typing on a laptop
computer.
FIG. 10 shows the elbow-support cushions upended and secured about the
pillow-support protrusion and pillow, so that they present no encumbrance
to transport, and the entire device may be carried as in FIG. 3. Assuming
that the user wishes to set up the elbow-support cushion embodiment of my
invention, she would proceed in exactly the same manner as described above
for setting up the device for prone lying, and then simply undo the snap
46 or other fastening means on the ends of the elbow-support cushion
straps 45, whereupon the elbow-support cushions 43 would drop down into
their correct positions, being restrained from excessive outward
displacement or improper orientation by their attached fabric hinges 44.
Of course, this procedure may be reversed when the user wishes to fold the
elbow-support cushions up for transport or storage of the device as a
whole.
FIG. 12 illustrates a person operating a laptop computer utilizing the
elbow-support cushions described above, and also employing a
forehead-support, whose particulars are detailed in FIG. 11.
From the previous description of the construction of this embodiment of my
invention, it will be appreciated that the forehead-support forms an
integral feature of the invention and therefore requires no further
assembly to be operational. Indeed, this embodiment of my invention may be
transported in precisely the same manner as that illustrated in FIG. 3.
Neither does this embodiment in any way limit the operation of the hinged
pillow, although a slight change in the manner of opening and closing the
optional elbow-support cushions is required, in that, rather than their
being secured by straps which fasten over the pillow as in FIG. 10, each
cushion has a male snap 59 attached thereto, which mates with a female
snap 60 on the vertical arms of the headrest base plate.
With respect to the use of the forehead-support itself, the user need only
place her chin on the pillow and place her forehead against the
forehead-support band until finding a satisfactory frontal angle whereby
she may readily see the computer screen or other work project, while
displacing about one-third of the weight of her head on her chin, and
two-thirds of the weight of her head on the forehead-support band. In
practice the assumption of this attitude requires no special skill or
effort since it precisely conforms to the requirements of comfort.
Regarding the justification for a forehead-support band at all, when it may
be supposed that the pillow 29 alone might provide adequate support of the
head when the chin is rested on it as in FIG. 7, the issue is one of
duration of use; that is, for shorter periods, direct support of the head
by the chin on the pillow is satisfactory. For longer periods, however,
the weight of the head as it bears on the temporomandibular joint may
create discomfort for some persons, and this may be relieved through
displacement of the greater part of the weight of the head onto the
forehead-support band.
Having now covered the operational procedure for the use of various
embodiments of my invention, it remains to describe how it may be folded
up for transport and storage. The method is so quick and easy that it
constitutes a significant improvement over all prior art, for all a person
must do is grab and lift the handle 32 of the multi-positional support
device and it will immediately assume the portable closed position
illustrated in FIG. 3 without any further adjustment. Of course, if the
elbow-cushion embodiment of my invention is used, the cushions must first
be secured in the manner described above, but this is a trivial operation
requiring only seconds to perform. Returning now to a more general
consideration of my invention, while FIGS. 6, 7 and 8 show some of the
beneficial uses to which several of its embodiments may be employed, they
by no means exhaust all of its purposes, a considerable number of which
have previously been recited as objects of the device.
Although I have now illustrated and described several practical and
representative embodiments of my invention, it should be understood that
many additions, deletions, modifications, and variations are possible
without departing from the spirit and scope of the present invention as
defined in the claims which follow.
* * * * *
|
|
 |
|
 |
Description |
|
