U.S. patent application number 11/506213 was filed with the patent office on 2007-02-08 for aromatic substance heating device.
This patent application is currently assigned to Pende, Inc.. Invention is credited to Deno N. Roumpos, George Roumpos, Mark Smith.
Application Number | 20070031298 11/506213 |
Document ID | / |
Family ID | 25368131 |
Filed Date | 2007-02-08 |
United States Patent
Application |
20070031298 |
Kind Code |
A1 |
Roumpos; Deno N. ; et
al. |
February 8, 2007 |
Aromatic substance heating device
Abstract
An aromatic substance heating device including a base, an
integral heating element carried by the base, wherein the aromatic
substance heating device is configured to receive and
non-combustively heat an aromatic substance that is a solid at room
temperature and a liquid at an elevated temperature. An aromatic
substance container can be included to contain and transfer heat to
the aromatic substance. The aromatic substance can include a candle
wax.
Inventors: |
Roumpos; Deno N.; (Murray,
UT) ; Roumpos; George; (Murray, UT) ; Smith;
Mark; (Salt Lake City, UT) |
Correspondence
Address: |
THORPE NORTH & WESTERN, LLP.
8180 SOUTH 700 EAST, SUITE 200
SANDY
UT
84070
US
|
Assignee: |
Pende, Inc.
|
Family ID: |
25368131 |
Appl. No.: |
11/506213 |
Filed: |
August 16, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10158585 |
May 29, 2002 |
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11506213 |
Aug 16, 2006 |
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09876606 |
Jun 7, 2001 |
7132084 |
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11506213 |
Aug 16, 2006 |
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60374211 |
Apr 19, 2002 |
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Current U.S.
Class: |
422/125 |
Current CPC
Class: |
A61L 9/03 20130101; A61L
2209/12 20130101; A61L 9/02 20130101 |
Class at
Publication: |
422/125 |
International
Class: |
A61L 9/03 20070101
A61L009/03 |
Claims
1. An aromatic substance container, comprising: a) a bottom
surface, configured to be heated by a heat source; b) i) an outer
perimeter comprising an outer side wall, coupled to and extending
upwardly from the bottom surface, and ii) an inner perimeter
comprising an inner side wall, coupled to and extending upwardly
from the bottom surface, the inner perimeter being circumscribed by
the outer perimeter and defining an opening in the substance
container; each side wall being configured to contain and transfer
heat to an aromatic substance; c) an outer retaining lip extending
upwardly and inwardly from the outer side wall; and d) an inner
retaining lip extending upwardly and outwardly from the inner side
wall.
2. A container in accordance with claim 1, wherein: a) the bottom
surface is substantially annular and has a defined center vertical
axis; b) i) the outer side wall circumscribes the defined center
vertical axis of the bottom surface, and ii) the inner side wall is
located between the defined center vertical axis of the bottom
surface and the outer side wall, c) the outer retaining lip extends
i) upwardly from the outer side wall and ii) laterally toward the
defined center vertical axis of the annular bottom surface; and d)
the inner retaining lip extends i) upwardly from the inner side
wall and ii) laterally away from the defined center vertical axis
of the annular bottom surface.
3. A container in accordance with claim 1, wherein the bottom
surface and outer and inner side walls are comprised of a thermally
conductive material.
4. A container in accordance with claim 3, wherein the outer and
inner retaining lips are comprised of a material that inhibits
thermal conduction.
5. A container in accordance with claim 1, further comprising a
cover removably coupled to a top of each of the inner and outer
retaining lips, the cover being configured to cover and protect
contents of the aromatic substance container.
6. A container in accordance with claim 1, further comprising a
cover removably coupled to a top of each of the outer and inner
side walls, the cover being configured to cover and protect
contents of the aromatic substance container.
7. A container in accordance with claim 1, wherein the aromatic
substance includes a substance that is a solid having a lower vapor
pressure at a lower temperature, and that is a liquid having a
higher vapor pressure at an elevated temperature.
8. A container in accordance with claim 1, wherein the aromatic
substance includes a candle wax.
9. An aromatic substance container, comprising: a) a bottom
surface, configured to be heated by a heat source; b) i) an outer
perimeter comprising an outer side wall coupled to and extending
upwardly from the bottom surface; and ii) an inner perimeter
comprising an inner side wall coupled to and extending upwardly
from the bottom surface, the inner perimeter defining an opening in
the substance container being configured to at least partially
enclose a light source; each side wall being configured to transfer
heat to an aromatic substance;
10. A container in accordance with claim 9, wherein the bottom
surface and outer and inner side walls are comprised of a thermally
conductive material.
11. A container in accordance with claim 9, further comprising: a)
an outer retaining lip extending upwardly and inwardly from the
outer side wall; and b) an inner retaining lip extending upwardly
and outwardly from the inner side wall.
12. A container in accordance with claim 11, wherein the outer and
inner retaining lips are comprised of a material that inhibits
thermal conduction.
13. A container in accordance with claim 11, further comprising a
cover removably coupled to a top of each of the inner and outer
retaining lips, the cover being configured to cover and protect
contents of the aromatic substance container.
14. A container in accordance with claim 9, further comprising a
cover removably coupled to a top of each of the outer and inner
side walls, the cover being configured to cover and protect
contents of the aromatic substance container.
15. A container in accordance with claim 9, wherein the aromatic
substance includes a substance that is a solid having a lower vapor
pressure at a lower temperature, and that is a liquid having a
higher vapor pressure at an elevated temperature.
16. A container in accordance with claim 9, wherein the aromatic
substance includes a candle wax.
17. An aromatic substance container, comprising: a) a substantially
annular bottom surface comprised of a thermally conductive
material, having a defined center vertical axis, and being
configured to be heated by a heat source; b) a conductive outer
side wall comprised of a thermally conductive material, coupled to
and extending upwardly from the bottom surface and circumscribing
the defined center vertical axis of the bottom surface, and a
conductive inner side wall comprised of a thermally conductive
material, extending upwardly from the bottom surface and located
between the defined center vertical axis of the bottom surface and
the outer side wall; c) an aromatic substance, contained within a
cavity formed by the bottom surface and the conductive outer and
inner side walls; d) an outer retaining lip extending i) upwardly
from the conductive outer side wall and ii) laterally toward the
defined center vertical axis of the bottom surface; and e) an inner
retaining lip extending i) upwardly from the conductive interior
side wall and ii) laterally away from the defined center vertical
axis of the bottom surface.
Description
[0001] This application is a divisional application of copending
U.S. patent application Ser. No. 10/158,585, filed May 29, 2002,
which claims priority to Provisional U.S. Patent Application No.
60/374,211, filed Apr. 19, 2002, and is a continuation-in-part of
U.S. patent application Ser. No. 09/876,606, filed Jun. 7, 2001,
which are all hereby incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates generally to a device for
dispersing scent throughout an area. More particularly, the present
invention relates to a device for heating an aromatic substance to
provide the benefits of scented candles without the problems often
associated with the use of candles.
[0004] 2. Related Art
[0005] Scented candles have enjoyed increasing popularity in recent
years. They are available in a variety of pleasing scents and
colors. Many people use scented candles to help mask unpleasant
odors or to simply provide a pleasant smell to a room. Some believe
that particular scents provide some benefits, such as relieving
stress, headaches, allergies, etc. Many people also enjoy the
visual ambience, mood creation, and decor provided by a burning
candle, as attested to by the continued desire for the time-honored
candlelit dinner over more recent lighting innovations.
[0006] However, candles require a flame to heat the wax from which
the candle is formed. As is known, when the wick of a candle is
burned the wax immediately surrounding the wick melts; after which
scents contained in the wax pool are released into the atmosphere
at an increased rate. However, as a result, conventional candles
present a recognized fire danger. Many office buildings,
dormitories and even apartment complexes have banned the use of
candles due to this recognized fire hazard. Nearly all candle
manufacturers advise purchasers to never leave a burning candle
unattended.
[0007] Burning scented candles can also disperse combustion
by-products into the air, some of which may be toxic, such as
carbon monoxide, acetone, benzene, hydrocarbons and other noxious
substances. In a closed environment, such as a closed room, these
combustion by-products can accumulate to hazardous levels; and,
with prolonged use, can lead to health problems. Some wicks used in
candles today contain lead and/or other metals which, when the
wicks are burned, can increase the undesirable combustion
by-products. Moreover, a soot by-product, known as black soot
deposition, which accumulates with burning candles over time, is
unattractive and increases the need for cleaning of walls,
ceilings, etc. Nearly all of these undesirable qualities are
ultimately caused by the combustion process by which traditional
candles are utilized.
SUMMARY OF THE INVENTION
[0008] It has been recognized that it would be advantageous to
develop a device for dispersing scent throughout a room which does
not present the fire and pollutant dangers presented by burning
scented candles. It has also been recognized that it would be
desirable to develop such a device that simulates the visual
ambience created by burning candles.
[0009] The present invention provides an aromatic substance
container, including a bottom surface, configured to be heated by a
heat source and an outer perimeter comprising an outer side wall,
coupled to and extending upwardly from the bottom surface. An inner
perimeter can include an inner side wall, coupled to and extending
upwardly from the bottom surface, the inner perimeter being
circumscribed by the outer perimeter and defining an opening in the
substance container. Each side wall can be configured to contain
and transfer heat to an aromatic substance. An outer retaining lip
can extend upwardly and inwardly from the outer side wall. An inner
retaining lip can extend upwardly and outwardly from the inner side
wall.
[0010] In accordance with another aspect of the invention, an
aromatic substance container is provided, including a bottom
surface, configured to be heated by a heat source, and an outer
perimeter comprising an outer side wall coupled to and extending
upwardly from the bottom surface. An inner perimeter can include an
inner side wall coupled to and extending upwardly from the bottom
surface. The inner perimeter can define an opening in the substance
container and can be configured to at least partially enclose a
light source. Each side wall can be configured to transfer heat to
an aromatic substance.
[0011] In accordance with another aspect of the invention, an
aromatic substance container is provided, including a substantially
annular bottom surface comprised of a thermally conductive
material, having a defined center vertical axis, and being
configured to be heated by a heat source. A conductive outer side
wall can be comprised of a thermally conductive material, coupled
to and extending upwardly from the bottom surface and
circumscribing the defined center vertical axis of the bottom
surface. A conductive inner side wall can be comprised of a
thermally conductive material, extending upwardly from the bottom
surface and located between the defined center vertical axis of the
bottom surface and the outer side wall. An aromatic substance can
be contained within a cavity formed by the bottom surface and the
conductive outer and inner side walls. An outer retaining lip can
extend upwardly from the conductive outer side wall and laterally
toward the defined center vertical axis of the bottom surface. An
inner retaining lip can extend upwardly from the conductive
interior side wall and laterally away from the defined center
vertical axis of the bottom surface.
[0012] Additional features and advantages of the invention will be
apparent from the detailed description which follows, taken in
conjunction with the accompanying drawings, which together
illustrate, by way of example, features of the invention
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a side view of an embodiment of the present
invention, shown in partial cutaway and partial section;
[0014] FIG. 1a is a top view of the embodiment of the present
invention illustrated in FIG. 1, wherein elements 24 and 18 have
been omitted for clarity;
[0015] FIG. 2 is a side view of an alternate embodiment of the
present invention, shown in partial cutaway and partial
section;
[0016] FIG. 2a is a top view of the embodiment of the present
invention illustrated in FIG. 2, wherein elements 24 and 18 have
been omitted for clarity;
[0017] FIG. 3 side view of an alternate embodiment of the present
invention, shown in partial cutaway and partial section;
[0018] FIG. 3a is a top view of the embodiment of the present
invention illustrated in FIG. 3;
[0019] FIG. 3b is a top view of an alternate embodiment of the
heating element illustrated in FIGS. 3 and 3a;
[0020] FIG. 4 is a side sectional view of an alternate embodiment
of the present invention;
[0021] FIG. 4a is a top view of the embodiment of the present
invention illustrated in FIG. 4;
[0022] FIG. 5 is a side sectional view of an alternate embodiment
of the present invention;
[0023] FIG. 5a is a top view of the embodiment of the present
invention illustrated in FIG. 5;
[0024] FIG. 5b is a side sectional view of an alternate embodiment
of the embodiment of the present invention illustrated in FIG.
5;
[0025] FIG. 5c is a side sectional view of an alternate embodiment
of the embodiment of the present invention illustrated in FIG.
5;
[0026] FIG. 5d is a side sectional view of an alternate embodiment
of the embodiment of the present invention illustrated in FIG.
5;
[0027] FIG. 5e is a side sectional view of an alternate embodiment
of the embodiment of the present invention illustrated in FIG.
5;
[0028] FIG. 6 is a side sectional view of an alternate embodiment
of the present invention;
[0029] FIG. 6a is a top view of the embodiment of the present
invention illustrated in FIG. 6;
[0030] FIG. 6b is a side sectional view of an alternate embodiment
of the invention shown in FIG. 6;
[0031] FIG. 6c is a top view of the embodiment of the present
invention illustrated in FIG. 6b;
[0032] FIG. 6d is a side sectional view of an alternate embodiment
of the embodiment of the present invention illustrated in FIG.
6;
[0033] FIG. 6e is a perspective view of the embodiment of the
present invention illustrated in FIG. 6;
[0034] FIG. 7 is a side sectional view of an alternate embodiment
of the present invention;
[0035] FIG. 7a is a top view of the embodiment of the present
invention illustrated in FIG. 7;
[0036] FIG. 8 is a side sectional view of an alternate embodiment
of the present invention; and
[0037] FIG. 8a is a top view of the embodiment of the present
invention illustrated in FIG. 8.
DETAILED DESCRIPTION
[0038] Reference will now be made to the exemplary embodiments
illustrated in the drawings, and specific language will be used
herein to describe the same. It will nevertheless be understood
that no limitation of the scope of the invention is thereby
intended. Alterations and further modifications of the inventive
features illustrated herein, and additional applications of the
principles of the inventions as illustrated herein, which would
occur to one skilled in the relevant art and having possession of
this disclosure, are to be considered within the scope of the
invention.
[0039] Illustrated in FIGS. 1 and 1a is an aromatic substance
heating device 10. The device generally comprises a heating element
14 carried by and embodied in the base 11. In the embodiment shown
in FIGS. 1 and 1a, the base is configured to include a base housing
12 such that the heating element 14 is disposed within the base
housing 12. Another embodiment of the device can be configured such
that the heating element is disposed adjacent an upper portion 12a
of the base housing, or rests on an upper surface of a base, rather
than lower in the housing as in the illustrated embodiment. In all
these embodiments, however, the heating element is configured to
heat an aromatic substance. Since the idea is to increase the aroma
given off by the aromatic substance by heating it to increase a
vapor pressure or otherwise enhance evaporation and other
mechanisms of transfer of the aromatic substance to the air, the
heating element of the device can be configured in a wide variety
of configurations, depending on the aromatic substance(s) to be
heated. For example, a popular aromatic substance currently in the
marketplace is scented wax, sold as a scented wax candle.
Typically, these candles include a glass container, which is filled
with the scented wax and include a wick for burning. The present
device can be configured in such a way as to receive a scented
candle and to heat it without burning the wick. To serve this use,
the heating element can comprise a substantially flat upper surface
15 on which the scented candle can be rested.
[0040] The device 10 can be configured such that the heating
element 14 is configured to receive a scented liquid. In this
embodiment, the heating element itself can be configured in such a
way that a bowl-shaped receiving area 17 is formed. An advantage of
this embodiment is that it allows the user to use an aromatic
substance that is not in a separate container, if desired. For
example, if the user preferred scented oil as the favored aromatic
substance, the user could simply pour the oil directly into the
heating element receiving area. As the oil dissipates into the
atmosphere, the user would simply refill the receiving area to
replenish the desired aromatic substance. Additionally, in this
embodiment, the user can place one or more conventional scented wax
candles that are not confined in a container, such as traditional
candles made for use with traditional candle holders, within the
bowl shaped receiving area to heat them. This will facilitate
emitting an aroma such as conventionally obtained with a
conventional scented candle while lessening the combustion dangers
inherent in burning conventional candles. This embodiment likewise
allows the user to place within the bowl shaped receiving area any
scented substance that releases fragrance at moderately elevated
temperature; such as palletized wax, fragrance gel beads, and other
such substances.
[0041] The embodiment of the device 10 shown in FIGS. 1 and 1a
includes a sidewall 16 that circumscribes the heating element 14
and extends upwardly from the heating element 14. The sidewall 16
can either be comprised of an insulating material or a conductive
material depending on the features desired. In another embodiment,
the side wall can comprise a barrier to contain the aromatic
substance, keep the aromatic substance on/adjacent the heating
element; but it is not particularly conductive or insulative. If an
insulated side wall is desired, the side wall can be comprised of a
material that inhibits thermal conduction. As discussed more fully
below, if a conductive side wall is desired then the side wall can
either be comprised of a thermally conductive material or simply be
an integrally connected or unitary part of the heating element. It
is to be understood that the present device may require a power
source and control circuitry, as is known in the art, to power and
control the heating element and other features as will be discussed
below. For example, the power source can include AC or DC power,
such as is found in coThis will be conventional and include a
temperature sensor and control logic to add or decrease power to
the heating element to keep it within a desired range. While all of
the variations of the device are not shown in the figures, it will
be understood that they are within the scope of the invention when
the various ways of implementing the inventive subject matter is
known to those skilled in the art.
[0042] The heating element 14 can be of any type known to those
skilled in the art that provides for the necessary heat transfer.
Additionally, the heating element can be configured in a variety of
embodiments. In one embodiment, the heating element has a generally
circular shape as shown in FIG. 1. However, the heating element
could be configured in a variety of shapes and dimensions depending
on the nature of the aromatic substance and any related container.
The invention herein contemplates all known heating element
configurations even though the primary embodiment shown in the
drawings and in the description herein will be to a heating element
having a generally circular shape.
[0043] In one embodiment the heating element is a PTC (Positive
Temperature Coefficient) heating element. As is known in the art,
PTC heating elements generally have a unique resistance to
temperature which results in the resistance of the PTC decreasing
as heat is drawn from the PTC. PTC heating elements generally have
an extreme positive temperature coefficient over a very narrow
range of temperatures. PTCs can thus be self-regulated at a preset
temperature and can vary wattage automatically in order to maintain
the preset temperature. The use of a PTC heating element in the
present invention provides a heating device that accurately and
efficiently controls temperatures and minimizes energy
consumption.
[0044] The heating element is similarly not restricted to an
electrical heating element. The heating element could, for example,
be a solar heating element, or a chemical heating device which
produces heat in response to a chemical reaction. The heating
element could also be a combustion device, in which a fuel and
oxidizer are combusted to produce heat. An example of such a
heating element has been developed for portable curling irons. A
small supply of propane or butane can be contained within the
curling iron and be converted into heat through combustion. More
than one heating element can be included in the present invention,
and can be located in one or more locations in the base. When a
provision for a light source is included (as discussed in further
detail below), one or more heating elements can be disposed in one
or more locations around and adjacent the provision for a light
source.
[0045] As illustrated in FIG. 1 (note that elements 18 and 24 are
omitted from FIG. 1a), the device 10 is configured to receive a
container 18 upon the heating element 14. When power is applied to
the heating element and the temperature of the heating element
begins to rise, heat transfer from the heating element to the
container warms or heats the aromatic material. As the temperature
of the aromatic material begins to rise, aroma is released into the
atmosphere at an increased rate. If the upwardly extending side
wall 16 is comprised of an insulating material, the insulating side
wall 16 will serve to retain heat inside the bottom portion of the
container to more efficiently heat the aromatic material in the
container 18. Additionally, as discussed above, the side wall 16
can also act as a barrier to restrict lateral movement of the
container and thereby reduce spillage of the aromatic material.
[0046] The present invention thus provides an aromatic substance
heating device that can be used with a variety of aromatic
materials to emit a pleasant aroma. The container 18 can be of any
shape or substance that provides the desired heat transfer effects
and is compatible with the desired heating element configuration.
Also, any type of aromatic substance known in the art, including
scented wax, oil, or potpourri may be used with the present
invention. As discussed above, the present invention can be used
with a conventional scented wax candle (not shown) which can be
placed on the heating element 14 and warmed to an elevated
temperature. As the candle is heated, the aroma from the wax is
released at an increased rate. The present device thereby provides
a system for enjoying scented candles without requiring that the
candle be lit. Because combustion of candles can lead to
undesirable combustion byproducts, the device provides a healthier
and cleaner alternative to burning scented candles. It is
understood that the device is not limited to use with scented
candles, but can be used with alternate aromatic materials, as
discussed further below.
[0047] Because of the relative safety of the heating element, the
present invention can be operated for many hours without requiring
close supervision. The device can be used in areas where open
flames are not allowed, such as office buildings, dormitories and
apartment complexes. Because the device does not burn the aromatic
substance, when used with a conventional candle, it can
dramatically extend the life of the candle. It is also believed
that, when used with conventional candles, the present invention
extracts a higher degree of aroma from the candle, in contrast to
the aroma released when burning the candle.
[0048] To further enhance the safety and convenience of the present
invention, the device can include a timer (not shown in the FIGs.)
that can be operatively coupled to the heating element.
[0049] In this manner, an operator can pre-set a time for which the
device will be operated. Once the pre-set time has elapsed, the
timer can initiate a controller by which the heating element would
cease operation. This feature can be used to ensure that the device
is not left on for extended periods of time. An additional feature
that can be included with the present invention is a pressure
switch (not shown in the FIGs.) which can be operatively coupled to
the heating element. The pressure switch can be configured to
automatically initiate the heating element when a container is
placed on the heating element. For example, the pressure switch can
be configured to initiate the heating device upon sensing a weight
of 2 to 3 ounces. In this manner, a conventional aromatic substance
container, which can typically weigh more than 4 ounces, can be
placed upon the heating element and thereby initiate the heating
element.
[0050] In one embodiment of the present invention, the heating
device includes an air circulating fan to disperse the aroma
released from the aromatic material into the atmosphere. In the
embodiment in FIG. 1, the air circulating fan 20 is disposed within
the base housing 12 below the heating element to enhance the rate
at which the aroma is emitted into the atmosphere. The air
circulating fan can be of any type known to those skilled in the
art and can be configured to disperse the aroma in any number of
paths. In the embodiment illustrated in FIG. 1, the air circulating
fan is disposed below the heating element and is directed in an
upward direction toward the container 18. This configuration causes
a dispersement of the aroma in an upward direction along a path
that is perpendicular to the plane formed by the heating element.
However, the air circulation fan can be attached to the base in
different locations depending on the desired dispersement. One
embodiment of the invention (not shown) includes an air circulating
fan that is directed in a sideward direction parallel with the
plane formed by the heating element. Alternative embodiments
provide for an adjustable air circulating fan, whereby the rate of
air circulation can be adjusted to circulate more or less air.
[0051] In one embodiment of the present invention, the device
further includes a chimney 24 for channeling the aroma in an upward
direction. In FIG. 1 the chimney is comprised of cylinder or side
wall with a top 24b opening and a bottom 24a opening. In the
embodiment in FIG. 1, the bottom opening 24a of the chimney 24 is
placed over the container 18 and heating element 14 and rests on an
upper surface 12a of the base housing 12. While a principal
function of the chimney 24 is to direct the aroma in an upwardly
direction, it also serves add to certain visual effects that give
the device a candle-like or otherwise appealing appearance. In one
embodiment of the present invention, the chimney is comprised of a
translucent material. When a provision for a light source is
included with the device (as discussed in further detail below),
the translucent chimney can serve to soften the light emitted by
the light source to enhance the visual simulation of a burning
candle. If the material is translucent as opposed to transparent,
the device may create the impression that the source of the light
is a flame when in fact it may be a light bulb. Other features may
also be added to the chimney to create other visual effects.
Importantly, the chimney also acts as a barrier to protect the
aromatic material from any unwanted contact.
[0052] As illustrated in FIGS. 2 and 2a (note that elements 18 and
24 are omitted from FIG. 2a), the present invention can also
include a heating side wall 26 which can be comprised of a
thermally conductive material. In this embodiment, the heating side
wall is coupled to and extends upwardly from the heating element 14
and circumscribes the center of the heating element. The heating
side wall 26 can extend around at least a portion of a bottom of
the aromatic substance container 18 and serves to increase heat
flow through side walls of the aromatic substance container. The
heating side wall can be coupled to the heating element or can be
formed as an integral part of the heating element. FIG. 2 shows the
side wall 26 integrally connected as a part of the heating element
14. As discussed above, a configuration of this type creates a
bowl-shaped heating element that can directly receive aromatic
substances, such as oil and potpourri. The heating side wall can be
comprised of any conductive material, such as aluminum or steel, or
the same material as the heating element. The heating side wall
aids in heating the aromatic substance container by conducting heat
through the sides of the container as well as from the bottom. This
allows the aromatic substance to be heated much more quickly than
with conventional, flat heating elements thereby accelerating the
rate at which an aroma is emitted.
[0053] As illustrated in FIGS. 3 and 3a (note that elements 24 and
33 are omitted from FIG. 3a), an alternate embodiment of the
present invention includes a substantially annular, or ring, shaped
heating element 28 disposed within the base housing 12. By forming
the heating element in a generally annular configuration, a
provision for a light source 30 can be disposed within a center
region 29 of the heating element 14. The provision for a light
source can be a socket configured to receive a light source 32 to
simulate a visual appearance of a burning candle.
[0054] An annular aromatic container 33 having a center region that
corresponds to the center region 29 of the heating element can be
placed on the annular heating element. Additional description of
the annular aromatic container is provided below. In this annular
configuration, a light source 32 can be inserted into the socket
30. The light source can be of any type, but in one embodiment is a
"flickering" light bulb, which simulates a flame. In this manner,
as the heating element 28 heats the aromatic material and releases
aroma, thereby simulating the smell of a burning candle, the
flickering light simulates the look and ambience of a burning
candle. In one embodiment, an intensity of illumination from the
light source can vary, so as to emulate an appearance of a burning
candle. By utilizing a chimney 24, the simulation is further
enhanced. A translucent chimney can enhance the visual simulation
by hiding the appearance of the bulb while allowing the light to
pass through, which increases the look of a burning candle. The
light source may include a variety of styles and types, such as a
bulb, a tube, a flex-tube, an LED, a series of LEDs, etc., and may
be situated at various locations upon or within the base for any
desired optical effect.
[0055] In one embodiment, the socket 30 is disposed in the center
region 29 such that the top end of the socket 30 is below the plane
formed by the heating element 28. In this embodiment, the device
can be used with a light bulb or without depending on the
configuration of the aromatic container. If the container is
configured in an annular shape, a light source can be inserted in
the socket 30 to provide the visual effect of a candle. If the
container is not in an annular shape then the light source can be
omitted and the container can rest on the annular heating element.
Alternatively, the light source 32 can be removed and a container
of alternate shape (not shown) can be placed upon and heated by the
annular heating element. For example, conventional scented wax
candles come in a cylindrically shaped glass container. This type
of candle does not have an open center region that would permit use
of a light source 32. However, when the light source 32 is removed,
a cylindrically shaped container would be able to rest on the
annular shaped heating element. Thus, the present invention allows
the versatile use of specialized containers and conventional
containers, as the situation allows.
[0056] To facilitate heating of an annular container, more than one
heating side wall can extend upwardly from the heating element. As
illustrated in the embodiment in FIGS. 3 and 3a, an inner heating
wall 26a and an outer heating wall 26b can be present. In this
manner, more heat can be applied to the container to accelerate
heating of the container and its contents. As with a single heating
side wall, the heating side walls 26a and 26b in FIGS. 3 and 3a can
be coupled to the heating element or can be formed as an integral
part of the heating element. Similarly, the heating side walls can
be formed of any heat conductive material, such as aluminum or
steel.
[0057] The terms "annular" and "substantially annular" as used
herein are meant to describe the geometry of an element of the
present invention in which an interior and exterior edge of the
element generally correspond with an annular path circumscribing a
center of the element. As an example, shown in FIG. 3b is an
alternate embodiment 28a of the heating element 28 illustrated in
FIG. 3. The heating element 28a can be substantially annular in
shape. The substantially annular heating element 28a can posses a
depth, not shown, which can extend into or out of the plane
illustrated in FIG. 3b. The heating element 28a includes an outer
edge 72, an inner edge 74, and a defined radius 76 which extends
radially about a defined center 78. It will be appreciated that,
while the inner and outer edges are comprised of a series of
straight portions, each of the edges generally corresponds with the
circular path of the defined radius 76, which circumscribes the
defined center 78.
[0058] Thus, an "annular" element discussed herein is not limited
to a geometry which includes an outer and inner edge which are
circular. The outer and inner edges can be formed of many facets
which can form an organized pattern, as illustrated in FIG. 3b,
which can be a hexagonal shape, a square, triangle, etc., each with
a corresponding pattern forming a aperture near the center of the
element. The many facets can also be randomly oriented with respect
to a center of the element but which nonetheless collectively
correspond with a path defined by a radius of the element, the
radius extending radially from a center of the element.
[0059] An alternate embodiment of the present invention is
illustrated in FIGS. 4 and 4a. In this embodiment, a shield 34 is
provided. The shield can include air flow slots 36 which can
enhance the flow and circulation of air through the region 37
contained by the shield 34. In this manner, the air circulation fan
20 can more efficiently circulate and disperse the aroma. In
addition to other uses and features similar to that of the chimney
described in other embodiments, the shield 34 can serve to protect
the air circulation fan from debris and to mask the air circulation
fan and any auxiliary components disposed within the base
housing.
[0060] One embodiment of the aromatic container is illustrated in
FIGS. 5, 5a and 5b. In this embodiment, a containment area 45 is
formed by a bottom surface 36 and a side wall 40 for containing an
aromatic substance. In one embodiment, the bottom surface 36 and
side wall 40 are comprised of a thermally conductive material to
assist the efficiency of the heat transfer. While the container may
be formed in any desired shape, the container in this embodiment is
generally circular around a center point 38. In this embodiment,
the side wall 40 is coupled to and extends upwardly from the bottom
surface 36. With a circular container, the side wall 40
circumscribes a vertical axis 38a extending through the center 38
of the bottom surface. The side wall 40 and bottom surface 36 are
configured to contain and transfer heat to an aromatic substance
contained within the container. A retaining lip 42 is attached to
an upper edge of the side wall and extends inwardly towards the
containment area. In the embodiment illustrate in FIG. 5, the
retaining lip 42 extends i) upwardly from the conductive side wall
and ii) inwardly toward the containment area and the central
vertical axis of the container. The retaining lip is configured to
reduce spillage of the aromatic substance. The retaining lip is
particularly helpful when the aromatic substance is a liquid or is
liquefied during use of the device. The choice of material from
which the container is made is typically based on a variety of
factors including the desired heat conductivity and the desired
aromatic substance used with the container. For example, an
aromatic substance that is in a liquid or liquefied state during
use would require a container comprised of a material and
configured in such a way that would prevent leakage of the aromatic
material. Under these circumstances, it may be appropriate for the
container to be made of a water-proof material such as glass or
aluminum and to be formed in the shape of a dish or bowl.
Alternatively, if the desired aromatic substance was not a liquid
and did not liquefy during use, as in the case of potpourri, it
would not be necessary for the container to prevent leakage. As an
example, an appropriately configured container for potpourri could
have a side wall similar to that of a basket. The present invention
is intended to incorporate all configurations of containers known
in the art for containing aromatic substances.
[0061] It will be appreciated that the container discussed above
can be formed in two pieces as illustrated in FIG. 5c. The first
piece 41 can be an upper portion that is comprised of the retaining
lip 42. The second piece 43 comprises the remainder of the
container including the side wall 40 and bottom surface 36. The
container can be placed on or in a heating device to heat the
aromatic substance. The aromatic substance container can contain
any aromatic substance, but in one embodiment contains candle wax.
In the case that the aromatic substance is candle wax, as the
candle wax is heated, it liquefies. An advantage of the retaining
lip 42 is that it can help prevent liquefied material from spilling
from the container in the event that the container is tipped or
jostled.
[0062] The retaining lip can be comprised of any material, but in
one embodiment is comprised of a material that inhibits thermal
conduction. It will be appreciated that a conductive side wall 40
may become hot after being heated by a heating element. By forming
the retaining lip of a thermal insulator, it will not become as hot
as the conductive side walls and can be more comfortably grasped by
an operator.
[0063] In the embodiment illustrated in FIG. 5d, the aromatic
substance container 10e can include a cover 44 which can be
removably coupled to a top of the retaining lip 42. The present
invention is intended to incorporate all known covers and lids that
are known in the art. As can be appreciated, the covers described
herein can be used both with the one piece container and the two
piece container. These various covers can also be used in
connection with the annular shaped container discussed more fully
below. The cover 44 is configured to cover and protect contents of
the aromatic substance container. The cover 44 can be attached to
the retaining lip 42 in any manner known to those skilled in the
art. For example, the cover 44 can be attached to the retaining lip
42 with adhesive, in which case the cover can simply be discarded
once removed. The cover 44 can also be attached by crimping or
scoring methods commonly used to seal covers or tabs on aluminum
cans. One embodiment is to have a removable, disposable pull top
similar to that used in the food and beverage industry. In this
embodiment, once the pull top is removed it cannot be replaced to
cover the container. Alternatively, the cover 44 can be attached by
means of a frictional or press-fit configuration, in which case the
cover can be re-secured to the retaining lip after being
removed.
[0064] As illustrated in FIG. 5e, the aromatic substance container
can contain an aromatic substance 46 of any type. However, in one
embodiment, the aromatic substance is a material which has a lesser
odor magnitude when at room temperature and a greater odor
magnitude when at an elevated temperature. Thus, the aromatic
substance produces some detectable aroma while at room temperature
but the detectable aroma released from the substance is greatly
increased as the substance is heated.
[0065] In one embodiment, the aromatic substance 46 can be candle
wax, as is commonly known to those skilled in the art. Candle waxes
are often produced from paraffin, which can be obtained from
petroleum byproducts. Beeswax can also be used in candle wax, which
is naturally produced by bees. Microcrystallines, which differ from
paraffin, can also be used, as can polythylene waxes, all natural
wax and soy-based wax. The candle wax can also include scents,
colorings or other additives. It is to be understood that the
aromatic substance is not limited to candle waxes, and can include
scented oils, scented gels, and solids, such as "potpourri"
combinations.
[0066] An alternate embodiment of the aromatic cover is illustrated
in FIGS. 6 and 6a. In this embodiment, an annular aromatic
substance container 10f is configured in a ring or annular shape
having a center region 50 and a central axis 50a. Similar to the
containers described herein, the annular container has an annular
bottom surface 48, an outer side wall 52 and an inner side wall 54.
The inner and outer side walls 54 and 52, respectively,
circumscribe the defined center vertical axis 50a of the bottom
surface. The inner side wall 54 is located between the defined
center vertical axis 50a of the bottom surface and the outer side
wall 52. Each of the inner and outer side walls can be comprised of
an insulating or conducting material depending on the desired
effects.
[0067] In one embodiment, an outer retaining lip 56 extends
upwardly from the outer side wall 52 and laterally toward the
defined center vertical axis 50a of the annular bottom surface. An
inner retaining lip 58 extends upwardly from the inner side wall 54
and laterally away from the defined center vertical axis 50 of the
annular bottom surface.
[0068] The embodiment illustrated in FIG. 6 advantageously provides
for efficient heat flow from a heating element to an aromatic
substance. As shown in the drawings, the container forms what is
essentially a "donut" shaped container for aromatic substances. It
will be appreciated that heat can flow to the aromatic substance
contained in the container from the bottom surface 48, and each of
the inner 54 and outer 52 walls. In this manner, once heat is
applied to the container, the aromatic substance will reach
substantially the same temperature of the heating element in a
relatively short period of time, much shorter than with traditional
aromatic substance containers. All of the features and advantages
of the previous embodiments are also present here. For example,
shown at 60 in FIGS. 6b and 6c, is an aromatic substance contained
within the container. The aromatic substance can be any material,
as discussed above.
[0069] FIG. 6d illustrates an alternate embodiment of the device
shown in FIG. 6. Here, a cover 62 is provided that can be used to
cover and protect the contents of the aromatic substance container
10f. The cover can be attached to each retaining lip 56 or 58 in a
variety of ways, as discussed above. In addition, the cover can be
attached at 54 to only the outer retaining lip 56 or can be
attached at 66 to only the inner retaining lip 58. The cover can
comprise a generally circular shape, or can be formed in an annular
shape, so as to leave an opening that corresponds to the opening in
the annular container. Alternately, in the absence of the inner and
outer retaining lips, the cover can be attached directly to the
annular container. For instance, the cover can be attached at 64 to
the outer side wall 52 and attached at 66 to the inner side wall
54. Of course, the cover can also be attached at only one location,
either 64 or 66. FIG. 6e provides a perspective view of the
embodiment illustrated in FIG. 6.
[0070] An alternate embodiment of the present invention is
illustrated in FIGS. 7 and 7a. This embodiment of an aromatic
substance heating device includes a base 80 and a heating element
82 disposed within the base. This heating device is configured to
receive and heat an aromatic substance that is a solid at room
temperature and a liquid at an elevated temperature. Although not
so limited, one example of such an aromatic substance is candle
wax, as discussed in detail above. The base 80 can further define a
receiving cavity or containment 84 carried by the base to receive
an aromatic substance. In this embodiment, the base 80 essentially
defines a bowl-shaped receptacle that can receive an aromatic
substance of any type and can be liquid-tight. For instance, solid
wax in the form of small balls or pellets can be placed in the
receiving cavity and heated by the heating element 82. The
receiving cavity 84 can also be used to receive an aromatic
substance container (not shown).
[0071] FIGS. 8 and 8a illustrated another embodiment of the device
shown in FIG. 7. Here, a pair of heating elements 82a can be formed
as an integral part of the base 80. The heating elements can be
oriented in a generally circular formation, as illustrated in FIG.
8a, or could be oriented lengthwise or crosswise with respect to
the configuration of the base. Of course, the pair of heating
elements 82a can be replaced with a single heating element or a
plurality of heating elements. Once embedded in the base, the
heating elements can heat the area adjacent the receiving cavity 84
and thereby liquefy the solid aromatic substance to release aroma
from the aromatic substance.
[0072] It is to be understood that the above-referenced
arrangements are only illustrative of the application for the
principles of the present invention. Numerous modifications and
alternative arrangements can be devised without departing from the
spirit and scope of the present invention while the present
invention has been shown in the drawings and fully described above
with particularity and detail in connection with what is presently
deemed to be the most practical and preferred embodiments(s) of the
invention, it will be apparent to those of ordinary skill in the
art that numerous modifications can be made without departing from
the principles and concepts of the invention as set forth in the
following example combinations:
* * * * *