U.S. patent application number 11/207468 was filed with the patent office on 2006-02-23 for comfort cushion or bed.
Invention is credited to Soon Teck Heng.
Application Number | 20060037146 11/207468 |
Document ID | / |
Family ID | 35908265 |
Filed Date | 2006-02-23 |
United States Patent
Application |
20060037146 |
Kind Code |
A1 |
Heng; Soon Teck |
February 23, 2006 |
Comfort cushion or bed
Abstract
A cushion or bed which relieves tension in the muscles. The
cushion or bed includes a frame on which a support pad unit is
mounted. The support pad unit includes a plurality of support pads.
The support pads can be grouped into first and second support pads.
The first support pads are movable in the vertical or z direction
relative to the plane formed by the plurality of support pads and
the second support pads are immovable. Massaging modules, such as
percussion cylinders can be provided in the support pad to provide
massaging motion.
Inventors: |
Heng; Soon Teck; (Bishan,
SG) |
Correspondence
Address: |
HORIZON IP PTE LTD
8 KALLANG SECTOR, EAST WING
7TH FLOOR
SINGAPORE 349282
349282
SG
|
Family ID: |
35908265 |
Appl. No.: |
11/207468 |
Filed: |
August 19, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60522131 |
Aug 19, 2004 |
|
|
|
Current U.S.
Class: |
5/722 ; 5/690;
5/933 |
Current CPC
Class: |
A61H 2201/0138 20130101;
A61H 2201/0142 20130101; A61H 23/0218 20130101; A61G 7/0573
20130101; A61H 2203/0456 20130101; A61H 2201/0149 20130101 |
Class at
Publication: |
005/722 ;
005/690; 005/933 |
International
Class: |
A47C 17/00 20060101
A47C017/00 |
Claims
1. A cushion comprising: a frame; and a support pad unit mounted on
the frame, the support pad unit comprises a plurality of support
pads, wherein at least one of the support pads are movable in the
vertical or z direction relative to the plane formed by the
plurality of support pads.
2. The cushion of claim 1 wherein the plurality of support pads are
separated into first and second support pads, the first support
pads being movable in the vertical direction and the second support
pads being immovable.
3. The cushion of claim 2 wherein the first support pads are
commonly coupled.
4. The cushion of claim 3 further comprises an actuator for
commonly moving the first group of support pads.
Description
[0001] This application claims the benefit of U.S. Provisional
Application No. 60/522,131 (Attorney Docket No. YAALP2004-13) filed
on Aug. 19, 2004, which is herein incorporated by reference for all
purposes.
FIELD OF THE INVENTION
[0002] The present invention relates to a cushion or a bed which
includes dynamic support.
BACKGROUND OF THE INVENTION
[0003] Conventional massaging beds or chairs employ rollers to
replicate massaging motions. The rollers typically move along the
vertical axis of the spine to apply pressure, thereby relieving
tension in the muscles. Since rollers move in a fixed line, they
may not conform to the body contour, thus insufficiently contacting
the body to adequately relieve tension in the muscles.
Additionally, the use of rollers does not provide adequate support
for the spine.
[0004] From the foregoing discussion, it is desirable to provide an
improved cushion which avoids the disadvantages of rollers.
SUMMARY OF THE INVENTION
[0005] The present invention relates to a cushion which relieves
tension in the muscles. In one embodiment, the cushion includes a
frame on which a support pad unit is mounted. The support pad unit
comprises a plurality of support pads, wherein at least one of the
support pads are movable in the vertical or z direction relative to
the plane formed by the plurality of support pads.
[0006] In one embodiment, the support pads are separated into first
and second groups of support pads. The first group of support pads
is movable while the second group is immovable. The first group of
support pads can be commonly coupled to move as a group.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIGS. 1a-b show an embodiment of the invention;
[0008] FIGS. 2a-b show the operation of one embodiment of the
invention;
[0009] FIGS. 3a-b show an alternative embodiment of the
invention;
[0010] FIG. 4 shows another embodiment of the invention;
[0011] FIG. 5 shows a movable support pad in accordance with one
embodiment of the invention;
[0012] FIG. 6 shows another embodiment of the invention;
[0013] FIGS. 7-8 show yet another embodiment of the invention;
[0014] FIGS. 8a-b show an embodiment of a pad unit;
[0015] FIG. 9 shows an embodiment of a pad unit and actuator;
[0016] FIGS. 10a-b show various embodiments of support pads in
accordance with the invention; and
[0017] FIGS. 11-13 show various embodiments of massaging
subunits.
DETAILED DESCRIPTION OF THE INVENTION
[0018] FIGS. 1a-b show top and cross-sectional views of one
embodiment of the invention. As shown, a cushion 101 includes a
frame 120. The frame can be formed using, for example, steel. Other
rigid materials, such as aluminum, can also be used. Mounted on the
frame is a plurality of support pads 130.sub.1-x. Illustratively,
five pads (x=5) are mounted on the frame. Providing other values of
x is also useful.
[0019] A protective cushion layer 190 can be provided to surround
the frame and support pads. The cushion layer is made of, for
example, high density foam. Other types of materials, such as latex
with cotton padding, can also be used to form the protective
cushion layer. Preferably, the protective cushion has an upper
surface which is coplanar with the support pads in their neutral
position. In addition, a surface protective cushion layer can be
provided on the surface of the support pads. The thickness of the
surface protective cushion is, for example, about 1-2 cm. Other
thicknesses can also be useful. A cushion cover 195 is then
provided to cover the cushion layer.
[0020] The support pads support, for example, the human back. In
one embodiment, the support pads comprise high density foam. The
foam can include springs to provide additional support. Other
materials or combination of materials, such as latex and cotton
padding are also useful. It is further understood that different
support pads can be formed from different materials.
[0021] An upper surface 136 of the support pads are co-planar when,
for example, in the neutral position. At least some of the support
pads are movable along or substantially along the z-direction
(positive and/or negative) to produce a non-planar upper surface.
The support pads can be made movable using floating joints. Other
techniques to facilitate moving support pads are also useful.
[0022] Preferably, the support pads are grouped into first and
second groups, wherein the support pads of the first group are
movable while the support pads of the second group are immovable.
In one embodiment, alternate support pads belong to alternate
groups. Grouping the support pads in other number of groups is also
useful.
[0023] Preferably, the plurality of support pads comprises an odd
number of support pads (x=odd number). More preferably, the group
with the support pads at the end is the group with the movable
support pads. For example, first, third and fifth support pads
belong to the first movable group while the second and fourth
support pads belong to the second non-movable group. In one
embodiment, the support pads or the first group are linked, moving
the same amount above and or below the neutral position. Providing
supports pads which only move above or below the neutral position
is also useful. Other configurations of groupings are also useful.
Typically, the support pads can be moved a distance of about 2-8
inches. Other distances are also useful, depending on design or
application requirements.
[0024] In operation, the first group of pads can be controlled to
move either above or below the neutral position 136 of the support
pads. This results in a non-planar surface, as shown in FIGS. 2a-b.
By providing a non-planar surface, the support pads only contact
parts of the body while providing support. For example, if the
support pads are moved above the neutral position, the majority of
the support comes from the first support pads. After a desired
period of time, the first support pads can alternate their
position, such as moving below the neutral position. When this
occurs, different parts of the body are being supported by the
second support pads. Alternating pressure on different parts of the
body can stimulate circulation as well as reduce body aches.
[0025] In another embodiment, massaging modules are provided in at
least the first support pads. The massaging module provides
massaging motions, such as pounding, rotating, and/or kneading. In
one embodiment, the massaging module comprises a percussion
cylinder. Each of the first group support pads can include one or
more percussion cylinders as desired. Providing percussion
cylinders in both first and second support pads is also useful. A
percussion cylinder comprises a top portion which changes or
alternates pressure on the body portion with which it is in
contact. Providing percussion cylinder which provides additional or
other types of massaging motion is also useful. In one embodiment,
the top portion oscillates in the z direction, providing a pounding
massaging function. To facilitate oscillation in the z direction, a
solenoid can be used. Other techniques for oscillating the top
portion of the percussion cylinder in the z direction are also
useful. A vibrating motor can be mounted to the frame to vibrate
the cushion to provide vibrating function for the cushion.
[0026] In an alternative embodiment, the first and second groups
are movable. The support pads of the first and second groups are
respectively linked. In such case, the support pads preferably move
in either the positive or negative z direction with respect to the
neutral position. Providing support pads which move in both
negative and positive z direction is also useful. Increased
flexibility is achieved by having first and second movable support
pad groups.
[0027] In yet another embodiment, all the support pads are movable
and the movement of each is decoupled from other support pads.
Providing decoupled movable support pads allows the pads to be
positioned to the desired surface contour, as shown in FIG. 3a.
Additionally, the alternate support pads can be assigned to
alternate groups. This allows the one or the other group to be
raised above or lower below the desired contour line, as shown in
FIG. 3b. As previously described, the support pads can be
implemented with massaging modules (e.g., percussion cylinder)
and/or vibration motor. The support pads can be adjusted to the
desired contour line manually or automatically. Automatic
adjustment can be facilitated by the use of, for example, pressure
sensors. The pressure sensors can be set to detect the desired
pressure to determine the desired position.
[0028] In one embodiment, sensors are provided to determine if the
support pads have reached the first or second positions. Various
types of sensors are useful, such as electrical, electromechanical
and/or mechanical. Additionally, sensors such as photo-sensors are
located along the bed frame to ensure that the movable support pads
return to the normal (e.g., neutral) position when power is off.
Other techniques for determining pad positions are also useful.
[0029] FIG. 4 shows another embodiment of the invention. As shown,
a cushion 401 includes a plurality of percussion cylinders 460. The
percussion cylinders are supported by, for example a frame 420.
Other techniques for providing support for the percussion cylinders
are also useful. In one embodiment, the percussion cylinders are
arranged in a matrix format. Other configurations are also
useful.
[0030] A cushion layer 490 is provided to surround and/or cover the
frame and percussion cylinders. The cushion layer is made of, for
example, high density foam. Other types of materials, such as
latex, can also be used to form the protective cushion layer. A
cushion cover 495 is then provided to cover the cushion layer.
[0031] As discussed, a massaging module (e.g, percussion cylinder)
comprises a top portion which changes or alternates pressure on the
body portion with which it is in contact. In one embodiment, the
top portion oscillates in the z direction, providing a pounding
massaging function. Providing other types of massaging motion
(e.g., kneading or circular) is also useful. To facilitate
oscillation in the z direction, a solenoid can be used. Other
techniques for oscillating the top portion of the percussion
cylinder in the z direction are also useful. A vibrating motor can
be mounted to the frame to vibrate the cushion to provide vibrating
function for the cushion.
[0032] The cushion, as described, can be used, for example, to sit
on, rest your back or any other part of the body as desired. For
example, the pad can be placed on different parts or the chair as
desired. Furthermore, lager cushions can be used, for example, to
cover a chair or bed. For such applications, the frame can be
separated into two parts, one for the base and the other for the
back. Other cushion configurations are also useful.
[0033] FIG. 5 shows a movable support pad 530 in accordance with
one embodiment of the invention. As shown, the movable support pad
includes a pad 531. The pad comprises, in one embodiment, high
density foam. Other materials or combination of materials can also
be used. For example, the pad can include support springs and/or
massaging modules (e.g., percussion cylinders) encased by foam.
[0034] The pad is mounted on a pad support frame 532. The support
frame can be formed from metal. Other materials which can
sufficiently provide support for the pad are also useful. In one
embodiment, the support frame comprises a pad support portion 533
on which the pad is mounted and a vertical support portion 534 on
each side. The vertical support portion includes at least one
roller 538. As shown, two rollers are provided. Providing other
number of rollers is also useful. The rollers are mounted on rails
fixed to the frame of the cushion, allowing the pads to move along
the direction of the rails. In another embodiment, the rollers can
be provided with teeth which are matched with teeth formed on the
rails. Other techniques for providing movable support pads are also
useful.
[0035] In one embodiment, an actuator is provided to move the
movable support pads. The actuator, for example, comprises an
electric motor for moving the movable support pads. Other types of
actuators, such as electrical, electromechanical or mechanical
actuators are also useful. Such types of actuators, for example,
include pumps (e.g., electrical, hydraulic, or pneumatic). For
applications where the support pads can be independently movable,
an actuator is provided for each support pad.
[0036] A controller coupled to the actuator is provided to control
the movement of the pads. The movement can be controlled by the
user using the controller. Timing of the movements and length or
duration of the massaging module is activated can also be
controlled by the controller. The movements and timing can also be
programmed using various modes, as defined by the controller and/or
programmed by the user.
[0037] FIGS. 6-7 show another embodiment of the invention.
Referring to FIGS. 6-7, a bed 601 includes at least one support pad
unit 635 located on an upper portion thereof. The bed can be of any
size, such as king, queen, or twin. Other dimensions are also
useful. Preferably, one support pad unit is provided for each
person that the bed can accommodate. A lower portion of the bed
includes a base 625 that includes a frame 628 for supporting the
support pad unit. The frame, for example, can be formed from metal
rods or tubing. Other types of materials which can adequately
provide structural support is also useful. A cover, such as fabric
or other suitable materials can be provided to hide the frame.
[0038] Surrounding the support pad unit in the upper portion of the
bed is a protective cushion 690. The protective cushion can also
cover the surface of the support pad unit. The protective cushion
can be formed from, for example, high density foam. In one
embodiment, the protective cushion is mounted to the frame. Various
techniques, such as using Velcro straps, are useful to mount the
protective cushion to the frame. The inner surface of the
protective cushion can be provided with a liner 693. The liner, for
example, serves as a protective barrier between the protective
cushion and the support pad unit. In one embodiment, the liner
comprises a latex base material. Other types of materials can also
be used to form the liner. The bed can be advantageously made to
look like a conventional bed.
[0039] The support pad unit comprises a plurality of support pads
630.sub.1-x. The support pads serve to support, for example, the
human body. In one embodiment, the support pads comprise high
density foam. The foam can include springs to provide additional
support. Other materials or combination of materials are also
useful. It is further understood that different support pads can be
formed from different materials.
[0040] In one embodiment, a support pad includes one or more
massaging modules 638. A massaging module provides a massaging
motion, such as pounding, kneading and/or circular. Other types of
massaging motion are also useful. As shown, a support pad includes
two massaging modules spaced apart. Preferably, the massaging
modules are located so that they contact the body on each side of
the spine. Providing other number of massaging modules or
configuration is also useful. It is also understood that not all
support pads includes massaging modules or the same number of
massaging subunits.
[0041] In one embodiment, at least one of the support pads is
adjustable in the vertical or z direction. The support pads can be
moved and/or positioned in a manner as already described earlier in
the specification with respect to FIGS. 1-3. For example, the
movable support pads can be moved individually or commonly as one
or more groups. In another embodiment, alternate pads are movable
while the others remain in a fixed position. As will be
appreciated, x may vary according to the width of the pads and
length of the bed and x can either be an odd or even number.
Typically, the width of the pads is about 2-5 inches. Preferably,
the width should sufficient to provide support without causing
discomfort as a result of the pads being moved. Other widths are
also useful. It is understood that not all pads need to have the
same width.
[0042] In another embodiment, to accommodate additional number of
people on the bed, additional support pad units can be provided.
For example, y number of support units can be provided to support y
number of people on the bed. As such, the dimensions of a support
pad unit should be sufficient to accommodate one person. Providing
a support, pad unit having other dimensions is also useful.
[0043] FIGS. 8a-b show a support pad unit 635 in accordance with
one embodiment of the invention. Referring to FIGS. 8a-b, the
support pad unit comprises a plurality of support pads
630.sub.1-630.sub.x. Illustratively, the support pad unit comprises
15 support pads (x=15). Providing a support pad having a different
number of support pads (even or odd) is also useful. The support
pads are mounted onto a support pad frame 822. The support pad
frame can be integrated as part of the bed frame. Providing a
support pad frame separate from the bed frame is also useful.
[0044] In one embodiment, the odd numbered support pads are
immovable while the even numbered support pads are movable in the z
direction. The support pads can be made movable using floating
joints, rails, and/or tracks. Other techniques to facilitate moving
support pads are also useful. In one embodiment, the odd numbered
support pads are commonly linked, moving as a unit. Alternative
configurations of movable and immovable pads are also useful. Upper
surfaces 836 of the support pads are planar when, for example, in
the neutral position.
[0045] In operation, the first group of pads can be controlled to
move either above (FIG. 8a) or below (FIG. 8b) the neutral position
of the support pads. This results in a non-planar surface, as shown
in FIGS. 2a-b. By providing a non-planar surface, the support pads
only contact parts of the body while providing support. For
example, if the support pads are moved above the neutral position,
the majority of the support comes from the first support pads.
After a desired period of time, the first support pads can
alternate their position, such as moving below the neutral
position. When this occurs, different parts of the body are being
supported by the second support pads. Alternating pressure on
different parts of the body can stimulate circulation as well as
reduce body aches.
[0046] In one embodiment, sensors are provided to determine if the
support pads have reached the first or second positions. Various
types of sensors are useful, such as electrical, electromechanical
and/or mechanical. Additionally, sensors such as photo-sensors are
located along the bed frame to ensure that the movable support pads
return to the normal (e.g., neutral) position when power is off.
Other techniques for determining pad positions are also useful.
[0047] In another embodiment, the at least some of the support pads
are movable. The support pads can be grouped into movable and
immovable groups. For example, alternate pads are movable while the
others are immovable. Providing support unit with all support pads
being movable is also useful. The movable pads can be moved as a
unit or individually. Grouping movable support pads in different
commonly controlled groups is also useful. Alternatively, the
position of the movable support pads can be individually
controlled, for example, as described in FIGS. 3a-b.
[0048] FIG. 9 shows a support pad unit and actuator in accordance
with one embodiment of the invention. As shown, the support pad
unit 635 includes a movable support pad frame 822 on which the
movable support pads are mounted. The support frame commonly moves
the movable support pads. In one embodiment, the support frame
comprises metal bars. Other material and/or frame design is also
useful.
[0049] An actuator 936 is coupled to the support frame. The
actuator is mounted onto the bed frame 820. The actuator controls
the movement of the support frame, determining the position of the
movable support pads. In one embodiment, the actuator comprises an
electric motor. Various types of electric motors, such as stepper,
servo, or synchronous motor can be used. For example, the motor
comprises a ball screw type hybrid stepper motor having a dynamic
capacity 3600N, travel rate 800 mm/sec, maximum motor rating 0.5
HP, and 1.8 degrees. The motor can include a brake for load
holding. Other types of actuators are also useful.
[0050] A floating joint, in one embodiment, couples the actuator to
the support pad frame. Other techniques for coupling the actuator
can also be used. To provide balance and prevent side loading of
the support pad frame, a support shaft, such as a bearing shaft, is
provided. The diameter of the bearing shaft, for example, is about
30 mm with a basic dynamic load capacity of about 166 kgf. Other
types of supports can also be used to provide balance and prevent
side loading.
[0051] FIGS. 10a-b show support pads in accordance with various
embodiments of the invention. Referring to FIG. 10a, a support pad
630 includes at least one pocket spring module 1036 mounted on a
support member 1041. The support member comprises, for example,
metal or aluminum. Other materials that can provide adequate
support are also useful. As shown, the support pad comprises three
pocket spring modules. Providing a support pad with other number of
pocket spring modules is also useful. The number of pocket spring
modules depends on, for example, the length of the support pad and
size of the pocket spring modules.
[0052] In one embodiment, a pocket spring module includes at least
one coil spring 1082. For example, pocket spring module 1036a
comprises three-coil springs while pocket spring module 1036b
comprises two-coil springs. Forming pocket spring modules with
other number of coil springs is also useful. Illustratively, the
support pad comprises two pocket spring modules with three coil
springs and one with two coil springs. It is understood that the
support pad can be formed with various combinations of pocket
spring modules
[0053] Various types of coil springs can be used. In one
embodiment, the coil spring comprises a 6-10 cm coil spring. The
pocket spring module includes a cover, such as cloth or other types
covering material, to encase the coil spring or springs.
Preferably, a liner is provided, such as foam, to provide padding
for comfort. The liner can also include a lubricating layer or
material to reduce friction. The lubricating layer or material, for
example, comprises wax. Other lubricating materials can also be
used. It is understood that the liner can be integrated as part of
or separate from the cover.
[0054] A spacer 1052 is provided between the pocket spring module
and support member. Preferably, the spacer is provided within the
pocket spring module on which the coil spring is mounted. The coil
springs are fixed to the spacer. Fasteners (e.g., screws, bolts or
nuts) are used to mount the pocket spring module onto the support
member.
[0055] Referring to FIG. 10b, a support pad includes pocket spring
modules 1036 and massaging modules 1038. As shown, the support pad
includes two pocket spring modules 1036b having two coil springs
and one pocket spring module 1036c with one coil spring. Two
massaging modules are disposed on either side of the pocket spring
module with one coil springs. Other configurations or combination
of pocket spring modules and massaging modules are also useful. The
massaging module provides massaging motion, such as kneading,
pounding or circular. Other types of massaging motion are also
useful.
[0056] In one embodiment, the support pads with the massaging
modules are used are configured as movable support pads while the
ones without are configured as immovable support pads in the
support pad unit. Other configurations of the support pad unit are
also useful. Preferably but not necessarily, the immovable support
pads are provided with larger coil springs (e.g., 10 cm) to improve
support while the movable support pads are provided with smaller
coil springs. The reason is that the smaller and lighter coil
springs facilitate better motion of the support pads while the
heavier coil springs improve support. The use of pocket spring and
massaging modules advantageously enable replacement of the modules
for easy maintenance and changing of configurations.
[0057] FIG. 11 shows a massaging unit 1038 in accordance with one
embodiment of the invention. As shown, the massaging unit comprises
a percussion cylinder 1039 which provides a pounding motion. The
massaging unit is mounted onto the support member 1041 by a nut
1193. In one embodiment, the percussion cylinder comprises a body
having upper and lower portions 1193-1194 encasing a coil spring
1174. Although the cylinder body is circular in shape, other
geometric shapes are also useful. The body portions can be formed
of aluminum. Other types of materials, such as metal, can also be
useful. In one embodiment, the coil spring comprises an 8 cm coil
spring.
[0058] At least one grove 1177 is provided along the side of one of
the body portions. A pin on the other body portion allows the upper
portion to move up or down relative to the lower portion. The
groove determines the upper and lower limits of movement by the
upper portion. As shown, the groove is located on the lower portion
while the pin is located on the upper portion. Other configurations
or techniques to enable the upper portion to slide up and down
relative to the lower portion are also useful.
[0059] A top 1146 is mounted on the top surface of the upper body
portion of the cylinder. The top comprises, in one embodiment, a
hardened rubberized oval/egg shape material. Preferably, the top is
padded with latex or other soft material to cushion the body. In
one embodiment, an actuator 1178 is provided at the bottom of the
cylinder to cause the upper portion to oscillate up and down. In
one embodiment, the actuator comprises a solenoid. Other types of
actuators are also useful. The solenoid can either be a pull or a
push type of DC continuous solenoid. The solenoid includes a
coupling member. Depending on the type of solenoid used, the
coupling member pushes the top up or allows the top to retract. In
one embodiment, the solenoid comprises the following specification:
DC, continuous (100%) duty cycle, power=30 watts, force at 25.4 mm
stroke: 2070 grams and force at 38.1 mm stroke: 737 grams. Other
types of solenoids are also useful.
[0060] The height of the actuator and/or coupling member can be
adjusted to calibrate to ensure contact to the body or pounding
pressure. In one embodiment, the actuator includes a threaded body
to facilitate height adjustment. Other techniques for height
adjustment or providing a pounding motion by the massaging unit are
also useful.
[0061] Alternatively, as shown in FIG. 12, the actuator 1178 is
mounted on a top surface of the upper portion. In the case where
the upper portion does not have a top surface, the actuator can be
mounted on a bottom surface of the top 1146. In one embodiment, the
top is mated to the upper portion by threads 1248. The use of the
treads can also serve to adjust the height of the actuator for
height adjustment. A coupling member of the actuator either pushes
the upper portion of the massaging unit up or down, providing a
pounding motion. A spring (not shown) can be provided in the
cylinder.
[0062] FIG. 13 shows another embodiment of a massaging module 1338.
The massaging unit provides a circular motion. The massaging unit
comprises a body portion 1332 having a support surface 1332. At
least one sphere is disposed on the support surface. As shown, the
support surface includes two spheres. Providing other number of
spheres on the support surface is also useful. A plate 1343 is
located on the surface member. Preferably, the plate is designed to
separate the spheres. The plate is coupled to an actuator for
rotating it, moving the spheres in a circular motion (clockwise
and/or counterclockwise). In one embodiment, the actuator comprises
an electric motor. Other types of actuators are also useful.
[0063] In one embodiment, the support surface is located slightly
below the top of the body portion 1249. The support surface should
be located such that a portion of the spheres is exposed.
Preferably at least half of the spheres are exposed. Locating the
support surface on the top of the body portion is also useful.
[0064] A cover 1146 is attached to the body portion, encasing the
spheres. In one embodiment, the cover is mated to the body portion.
Preferably, the mating is achieved using threads. Other techniques
for mounting the cover to the body portion are also useful. At
least the upper portion of the cover comprises a soft material,
such as fabric, allowing the body to feel the circular motion
created by the rotating spheres. Other soft materials are also
useful. The cover may also include a padding or liner to cushion
the body for comfort.
[0065] In an alternative embodiment, an actuator for causing
oscillation up and down can be included to enable the massaging
unit to provide both circular and pounding motions. The body
portion, for example, can include upper and lower portions as
described in FIGS. 11-12. A vibrating motor can be mounted to the
frame to vibrate the support pads, providing a vibrate
function.
[0066] A controller coupled to the actuator or actuators is
provided to control the movement of the pads. The movement can be
controlled by the user using the controller. Timing of the
movements and length or duration of the massaging module is
activated can also be controlled by the controller. The movements
and timing can also be programmed using various modes, as defined
by the controller and/or programmed by the user. For beds with more
than one support pad unit, additional controllers can be provided.
Alternatively, one controller can be used to program or control the
support pad units individually.
[0067] While the invention has been particularly shown and
described with reference to various embodiments, it will be
recognized by those skilled in the art that modifications and
changes may be made to the present invention without departing from
the spirit and scope thereof. The scope of the invention should
therefore be determined not with reference to the above description
but with reference to the appended claims along with their full
scope of equivalents.
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