U.S. patent application number 12/317098 was filed with the patent office on 2009-04-30 for wick-holder assembly.
Invention is credited to Chris A. Kubicek, Cory J. Nelson.
Application Number | 20090111066 12/317098 |
Document ID | / |
Family ID | 37432248 |
Filed Date | 2009-04-30 |
United States Patent
Application |
20090111066 |
Kind Code |
A1 |
Kubicek; Chris A. ; et
al. |
April 30, 2009 |
Wick-holder assembly
Abstract
A wick-holder assembly includes a wick-retention member for
retaining a wick thereto and a heat-conductive element extending
from a base portion. The heat-conductive element may include
materials having different thermal expansion coefficients. The
materials may be arranged to interact to cause a portion of the
heat-conductive element to move in response to a flame disposed on
the wick.
Inventors: |
Kubicek; Chris A.; (East
Troy, WI) ; Nelson; Cory J.; (Racine, WI) |
Correspondence
Address: |
S.C. JOHNSON & SON, INC.
1525 HOWE STREET
RACINE
WI
53403-2236
US
|
Family ID: |
37432248 |
Appl. No.: |
12/317098 |
Filed: |
December 19, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11185174 |
Jul 20, 2005 |
7497685 |
|
|
12317098 |
|
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Current U.S.
Class: |
431/298 |
Current CPC
Class: |
F23D 3/24 20130101; C11C
5/006 20130101 |
Class at
Publication: |
431/298 |
International
Class: |
F23D 3/02 20060101
F23D003/02 |
Claims
1. A wick-holder assembly, comprising: a base portion; a
wick-retention member for retaining a wick in an operative position
extending upwardly from the base portion; and a heat-conductive
element extending from the base portion, the heat-conductive
element comprising a first portion including a first material and a
second portion including a second material, wherein the first and
second materials have different thermal expansion coefficients,
wherein the heat-conductive element moves and is adapted to secure
the wick-holder assembly to a raised capillary lobe in response to
heat from a flame disposed on the wick.
2. The wick-holder assembly of claim 1, wherein at least one of the
first portion and the second portion moves toward or away from the
wick-retention member.
3. The wick holder assembly of claim 1, wherein the heat-conductive
element substantially surrounds the wick.
4. The wick holder assembly of claim 1, wherein the heat-conductive
element is generally a convex shape.
5. The wick holder assembly of claim 1, wherein the first material
and second material comprise at least one of a metal, a ceramic,
and a polyester.
6. The wick-holder assembly of claim 5, wherein the metal comprises
at least one of aluminum, steel, nickel, magnesium, copper, iron,
silver, zinc, tin, and titanium.
7. A wick-holder assembly, comprising: a wick-retention member
having a wick extending therefrom; first and second heat-conductive
elements, wherein each heat-conductive element comprises at least
two materials comprising different thermal expansion coefficients;
and a substantially stationary base portion relative to the
wick-retention member extending from the wick-retention member to
the heat conductive element, wherein movement of the first
heat-conductive element in response to heat from a flame disposed
on the wick regulates the temperature of the flame and wherein
movement of the second heat-conductive element in response to heat
from the flame secures the wick-holder assembly to a raised
capillary lobe.
8. The wick-holder assembly of claim 7, wherein the movement of the
first heat-conductive element affects the flow rate of a fuel
through a capillary space.
9. The wick-holder assembly of claim 7, wherein one of the first
and the second heat-conductive elements forms a leg extending from
the base portion.
10. The wick-holder assembly of claim 9, wherein the wick holder
and the first heat conductive element both extend upwardly from the
base portion.
11. The wick-holder assembly of claim 10, wherein movement of the
first heat-conducting element adjusts a dimension of a capillary
space disposed between the base portion and a support therefore and
wherein the dimension comprises at least one of a length, a width,
and a height, and wherein at least one of the length, the width,
and the height increases in response to heat generated from the
flame disposed on the wick thereby restricting flow rate of a
liquid fuel charge disposed in the capillary space.
12. The wick-holder assembly of claim 11, wherein the leg moves
into a position to secure the wick-holder assembly to the support
structure.
14. The wick-holder assembly of claim 7, wherein the heat
conductive element extends upwardly from the base portion and
wherein the movement of the moveable member regulates transfer of
heat from the flame to the fuel.
15. The wick-holder assembly of claim 7, wherein the movement of
the heat-conductive element regulates the temperature of the
flame.
16. The wick-holder assembly of claim 7, wherein the first heat
conductive element moves substantially radially with respect to the
wick retention member.
17. The wick-holder assembly of claim 7, wherein the second
heat-conductive element extends downwardly from the base
portion.
18. A wick-holder assembly, comprising: a wick-retention member
having a wick extending therefrom and adapted to be placed onto a
melting plate; first and second heat-conductive elements, wherein
each heat-conductive element comprises at least two discrete
materials comprising different thermal expansion coefficients; and
a substantially stationary base portion relative to the
wick-retention member extending from the wick-retention member to
the heat conductive element, wherein movement of the second
heat-conductive element in response to heat from a flame secures
the wick-holder assembly to the melting plate.
19. The wick holder assembly of claim 18, wherein the second
heat-conductive element moves in response to heat from the flame in
a direction toward a capillary lobe on the melting plate.
20. The wick holder assembly of claim 18, wherein the at least two
discrete materials are selected from the group consisting of a
metal, a polyester, a ceramic, and combinations thereof.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 11/185,174, filed on Jul. 20, 2005.
REFERENCE REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable
SEQUENTIAL LISTING
[0003] Not applicable
BACKGROUND OF THE INVENTION
[0004] 1. Field of the Invention
[0005] The present invention relates generally to wick-holder
assemblies, and more particularly to wick-holder assemblies
responsive to thermal changes.
[0006] 2. Description of the Background of the Invention
[0007] Candleholders frequently include assemblies to hold a fuel
charge that has a wick holder to retain a wick within the fuel
charge. One such candleholder has a plurality of decorative radial
arms extending upward from a candle support cup that holds a fuel
charge. In such a candleholder, the radial arms are
circumferentially spaced around the candle support cup. Each arm
includes an inwardly turned tip portion that is directed toward a
candle placed in the candle support cup.
[0008] Another candleholder is a candlestick in which a cylindrical
candle is retained at a bottom end thereof by a metallic spring
clasp secured on a saucer portion. A wick is retained in the
cylindrical candle. The spring clasp is coined from a sheet of
metal to have a pair of opposing resilient arms extending upward
from a base section. Upper tip portions of the arms are curved
outwardly. The arms are angled inwardly to resiliently clasp the
bottom end of the candle therebetween. A lug on the saucer portion
interlocks with a complementary lug on the base section to retain
the spring clasp thereon.
[0009] A candle having a thermal response has a wick holder
disposed on an upper end of a support column that extends
downwardly through a wax fuel element. Each of a first and second
bimetallic coil is secured in a horizontal position to the support
column at a radial inner end thereof. The bimetallic coils are
disposed in a wax melt pool. An arm extends upward from the radial
outer end of each bimetallic coil, and a partial heart shaped
medallion extends upward from each arm. The bimetallic coils move
the heart shaped medallions together tangentially around the
support column when the wax melt pool is heated by a flame on the
wick due to differential thermal expansion of the bi-metallic
coils.
[0010] Another candleholder includes a conically shaped metallic
dish, a metallic wick clip, and a wick, all of which are placed on
top of a wax fuel element. The wick is carried within the wick
clip, and the wick clip is retained in a hole through the dish such
that an upper portion of the wick extends above the dish and a
lower portion of the wick extends below the dish. A plurality of
upturned petals is disposed around the periphery of the dish and
partially surrounds the wick and a flame on the wick. A metal wire
extends through a central axis of the wick, and an exterior helical
coil of wire extends along the exterior length of the wick. A metal
decorative element is carried over the dish and extends proximate
the flame. Heat from the flame is conducted by convection and by
conduction through the wires, the decorative element, and the wick
clip to form a pool of molten wax centrally disposed on the top of
the wax fuel element under the dish and wick. The dish, wick clip,
and wick move down with the top of the fuel element as the flame
consumes the molten wax.
SUMMARY OF THE INVENTION
[0011] According to one aspect of the invention, a wick-holder
assembly includes a base portion, a wick-retention member for
retaining a wick in an operative position extending upwardly from
the base portion, and a heat-conductive element extending from the
base portion. The heat-conductive element comprises a first portion
including a first material and a second portion including a second
material, wherein the first and second materials have different
thermal expansion coefficients. The heat-conductive element moves
and is adapted to secure the wick-holder assembly to a raised
capillary lobe in response to heat from a flame disposed on the
wick.
[0012] According to another aspect of the invention, a wick-holder
assembly includes a wick-retention member having a wick extending
therefrom, first and second heat-conductive elements, wherein each
heat-conductive element comprises at least two materials comprising
different thermal expansion coefficients, and a substantially
stationary base portion relative to the wick-retention member
extending from the wick-retention member to the heat conductive
element. Movement of the first heat-conductive element in response
to heat from a flame disposed on the wick regulates the temperature
of the flame and movement of the second heat-conductive element in
response to heat from the flame secures the wick-holder assembly to
a raised capillary lobe.
[0013] According to another aspect of the invention, a wick-holder
assembly includes a wick-retention member having a wick extending
therefrom and is adapted to be placed onto a melting plate. The
wick-holder assembly further includes first and second
heat-conductive elements, wherein each heat-conductive element
comprises at least two discrete materials comprising different
thermal expansion coefficients and a substantially stationary base
portion relative to the wick-retention member extending from the
wick-retention member to the heat conductive element. Movement of
the second heat-conductive element in response to heat from a flame
secures the wick-holder assembly to the melting plate.
[0014] Other aspects of the present invention will become apparent
upon consideration of the following detailed description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is an isometric view of a wick-holder assembly
according to an embodiment of the invention;
[0016] FIG. 2 is a plan view of the wick-holder assembly shown in
FIG. 1;
[0017] FIG. 3 is a partial cross-sectional view generally along the
lines 3-3 of FIG. 2 of the wick-holder assembly shown in FIG.
1;
[0018] FIG. 4 is a bottom plan view of the wick-holder assembly
shown in FIG. 1;
[0019] FIG. 5 is an isometric view of the wick-holder assembly of
FIG. 1 disposed on melting plate candle assembly in an operative
position; and
[0020] FIG. 6 is an isometric view of a wick-holder assembly
according to another embodiment of the invention.
DETAILED DESCRIPTION
[0021] Turning now to the figures, FIGS. 1-4 show a wick-holder
assembly 10 that includes a wick-retention member 12 for retaining
a consumable or non-consumable wick 14, heat-conductive elements 18
extending upward from a base portion 16, and legs 26 extending
downward from the base portion. The wick-retention member 12
extends upward from the base portion 16 to retain the wick 14 in an
operative position. In other embodiments not shown, the
wick-retention member 12 is integral to and/or formed from one or
more elements of the wick-holder assembly 10, such as, for example
one or more heat-conductive elements 18. The heat-conductive
elements 18 may include a number of portions, including, for
example, a first portion 20 and a second portion 22 that assist in
moving the heat-conductive elements in response to thermal changes.
A capillary rib 24 is disposed underneath and extending from the
base portion 16.
[0022] One or more portions of the heat-conductive elements 18,
including the first portion 20 and the second portion 22, may be
constructed of various materials having different thermal expansion
coefficients that respond to thermal changes and facilitate
movement of the heat-conductive element toward or away from a flame
and as shown by an arrow A. Examples of a material useful in the
present invention include a metal, such as aluminum, steel, nickel,
magnesium, copper, iron, silver, zinc, tin, or titanium, a
polyester, and a ceramic, and mixtures and combinations thereof,
such as bronze, brass, copper and aluminum, and/or a copper-plated
ceramic. Additionally, one or more heat-conductive elements 18 may
be made of the same material or different materials. For example,
one or more heat-conductive elements 18 may be constructed of a
single material such as aluminum, steel, or copper, while one or
more other heat-conductive elements may be constructed from two or
more materials such as a bimetallic material such as copper and
aluminum, or a composite or bi-material such as polyester and
aluminum or a plated ceramic material such as a metal-plated
ceramic including, for example, copper plated ceramic. The other
components of the wick-holder assembly 10 such as the
wick-retention member 12, the base portion 16, the capillary ribs
24, and/or the legs 26 may also be made of the same material as the
one or more of the heat-conductive elements 18 and in one
embodiment at least one of the heat-conductive elements, the base
portion, the capillary ribs, or the legs is a bimetallic material
such as copper and aluminum.
[0023] In one embodiment of the present invention, the
wick-retention member 12 is configured to retain a consumable or
non-consumable wick 14. In yet another embodiment, the
wick-retention member 12 is a non-consumable or reusable wick that
is configured to burn a fuel charge via capillary action. As shown
in FIGS. 1-3, the wick 14 extends vertically from the
wick-retention member 12 and through the base portion 16 into a
capillary space (not shown) defined by a support surface (not
shown) that holds the wick-holder assembly and the capillary ribs
24, the base portion 16, and the legs 26 of the wick-holder
assembly 10.
[0024] In one embodiment of the present invention, the first
portion 20 and the second portion 22 are constructed and arranged
to move toward or away from a heat source such as a flame (60, FIG.
5) disposed on the wick 14. Movement of one or more portions 20, 22
of the heat-conductive element 18 can independently be in any
direction including, for example, upward, downward, sideways,
axially, spirally, and/or directly radially from, for example, the
wick-retention member 12, and depends in one embodiment on the
configuration and/or the amount of thermal expansion coefficient
difference of the material used to construct the heat-conductive
element. Moreover, movement of the heat-conductive element 18 may
be influenced by the location and placement of the materials having
different thermal expansion coefficients within the heat-conductive
element. The shape, the location, and/or the distance of the
heat-conductive element 18 from the heat source may also influence
the movement of the heat-conductive element.
[0025] The wick-holder assembly 10 may be disposed on any
appropriate apparatus that is adapted to hold a fuel charge in
conjunction with the wick-holder assembly of the present invention,
such as the melting plate assembly 50 shown in FIG. 6. The melting
plate assembly 50 includes a fuel charge (not shown), such as
meltable candle wax or liquid oil, and a melting plate 52 supported
by a base member 56. The base member 56 may take any desired form
suitable for supporting the melting plate 52. The melting plate 52
includes a capillary lobe 58 centrally disposed therein. In one
embodiment of the present invention, when the wick-holder assembly
10 is operatively disposed on the melting plate assembly 50, the
capillary rib 24 of the wick-holder assembly rests on the capillary
lobe 58 to create a capillary space (not shown) between the
wick-holder assembly and the capillary lobe 58. The capillary space
extends between the melting plate 52 and the wick-holder assembly
10 and generally includes the area between the capillary lobe 58
and the capillary rib 24, the legs 26, and/or the base portion 16.
The capillary space allows melted or liquid fuel to be drawn
between the wick-holder assembly 10 and the melting plate 52 toward
the wick 14 to feed the flame 60 disposed on the wick-retention
member 12. Illustratively, heat from the flame 60 on the wick 14
melts the fuel charge by direct convection and/or conduction
through the heat-conductive elements 18 and conduction to the
melting plate 52 to form a pool of liquid fuel (not shown), such as
melted candle wax, adjacent to the capillary lobe 58. The liquid
fuel is drawn through the capillary space by capillary action to
the wick 14 to feed the flame 60. The wick-holder assembly 10 may
be used to maintain the wick 14 in an operative position after the
fuel charge has been substantially melted. In one embodiment, a
volatile active, such as a fragrance and/or an insect repellant,
for example, is carried by the fuel element for dispersion to the
surrounding environment when the fuel element is burned. The
wick-holder assembly 10 may also be secured to the melting plate
assembly 50 by any appropriate method know to those skilled in the
art, including, for example, a magnet, an adhesive, a rivet, a
tape, or a weld, and combinations thereof. Additional details and
aspects of a melting plate candle assembly are described in U.S.
patent application Ser. No. 11/123,372, which is incorporated
herein by reference in the entirety thereof.
[0026] In other embodiments, the geometry of the heat-conductive
element 18 is such that the heat-conductive element substantially
surrounds or partly surrounds the wick-retention member 12 and,
therefore, the flame 60 supported by the fuel charge. For example,
the wick-holder assembly 10 shown in FIG. 6, has heat-conductive
elements 18 that are generally S-shaped as opposed to a generally
convex-shape of the heat-conductive elements shown in FIGS.
1-4.
[0027] In operation, the geometry and/or the composition of one or
more components of the wick-holder assembly 10 may be configured to
control and/or regulate the temperature of the wick-holder
assembly, the capillary space between the wick-holder assembly and
a support surface holding the wick-holder assembly such as the
melting plate 53 of FIG. 5, and/or the movement of air surrounding
a heat source such as the flame 60 disposed on the wick-holder
assembly. The geometry of a component generally relates to, for
example, the positioning of the component on the wick-holder
assembly 10, the movement of the component on the wick-holder
assembly in response to heat generated from a flame 60 disposed on
the wick 14, the size and/or shape of the component, and/or the
thickness of the component.
[0028] In one embodiment, the temperature of the wick-holder
assembly 10 is controlled and/or regulated, by the shape and/or the
positioning of the heat-conductive elements 18. For example, to
increase the temperature of the wick-holder assembly 10 while the
flame 60 is lit, the heat-conductive elements 18 are shaped and/or
positioned to be closer to the flame and/or to expose more surface
area to the flame. The closer to the flame 60 and/or the more
surface area that is exposed to the flame, the more heat is
transferred from the flame to the heat-conductive elements 18. From
the heat-conductive elements 18, heat is then transferred to the
other components of the wick-holder assembly 10. The heat of the
wick-holder assembly 10 may then be transferred to the fuel charge,
which facilitates melting and/or volatilization thereof. The
composition of the various components may also be selected to
control and/or regulate the temperature of the wick-holder assembly
10. For example, the heat-conductive elements 18 can be made of
various materials having different thermal conductivity and/or
thermal expansion coefficients such as a multi-metallic material,
for example, a bi-metal, which when heated a surface is configured
to move toward or away from the heat source. The materials may be
positioned within and/or on the heat-conductive elements 18 at
various locations, for example, within and/or on the first portion
20 or the second portion 22, to facilitate heat transfer and/or
movement of the heat-conductive elements toward or away from the
flame 60.
[0029] In other embodiments, the capillary space between the
wick-holder assembly 10 and the melting plate assembly 50 is
controlled and/or regulated by the geometry and/or the composition
of one or more components of the wick-holder assembly. For example,
in one embodiment when one or more legs 26 and/or capillary ribs 24
are heated, one or more dimensions, for example, a length, width,
and/or height, of the legs and/or capillary ribs are configured to
move in a direction that increases and/or decreases the capillary
space of the wick-holder assembly 10. Illustratively, after the
wick 14 or the wick-retention member 12 is lit and begins to
generate heat, one or more dimensions of the legs 26 and/or the
capillary rib 24 increases in response to the heat. The increased
dimension in one embodiment reduces the capillary space and thereby
restricts flow rate of the liquid fuel charge disposed in and/or
traveling through the capillary space. Additionally, or
alternatively, as the flame 60 begins to produce less heat and the
legs 26 and/or the capillary ribs 24 begin to cool, the one or more
dimensions of the legs 26 and/or the capillary ribs 24 begin to
decrease, thereby allowing more fuel to pass through the capillary
space. By regulating the flow rate of the fuel charge, the size
and/or the burn rate of the flame 60 may be regulated by changing
the amount of fuel supplied to the flame.
[0030] Furthermore, by reducing the impact of breezes and other
movements of air surrounding the flame 60, the thermal output of
the flame may be maintained or enhanced in comparison to a flame
without the protection of the heat-conductive element 18. In one
embodiment, by maintaining or enhancing flame performance, thermal
generation can be increased and/or optimized to melt and/or
volatilize a fuel charge.
[0031] Changing geometry of one or more components of the
wick-holder assembly 10 via a thermal response may also be used to
engage, interlock and/or secure the wick-holder assembly to an
apparatus such as the melting plate assembly 50 shown in FIG. 6.
For example, the legs 26 may be configured to move in a direction
of arrow B by the use of differing expansion properties of a
bi-metal, for example, as the wick-holder assembly warms and cools.
Illustratively, after the wick 14 is lit, the heat-conductive
elements 18 begin to warm and heat is transferred to the base
portion 16 and to the legs 26. As the legs 26 begin to warm,
different portions of the legs begin to expand at different rates
correlated to the material in which the legs are composed. In one
embodiment, the legs 26 begin to move in a direction toward the
capillary lobe 58 and engage or grip a groove (not shown) in the
melting plate 52. When the flame is extinguished and the
wick-holder 10 cools, the legs 26 contract and return to an
original position. In this embodiment, the use of other attachment
methods such as a magnet to secure the wick-holder assembly 10 to
the melting plate 52 may not be necessary.
[0032] The wick-retention member 12 in one embodiment is made of a
heat-transmissive material, such as a metal, which facilitates
conductive heat transfer from the flame 60 to the melting plate 52.
In the embodiment shown in FIG. 3, the wick-retention member 12 is
attached to the base portion 16 that includes one or more capillary
ribs 24 and/or capillary channels (not shown). The shape of the
capillary rib 24 shown is a raised rib extending partly around the
base portion 16 and is a length, width, and/or height that
facilitates capillary action of the melted and/or liquid fuel
charge while the flame 60 is lit. Additionally, or alternatively,
the capillary lobe 58 may have capillary ribs and/or capillary
channels (both not shown) of a shape and/or dimension to assist in
the capillary movement of the melted or liquid fuel charge to the
flame 60. Any other shape and/or dimension of the capillary ribs 24
and/or the capillary channels is also contemplated as long as a
capillary space may be created to facilitate movement of the melted
or liquid fuel charge.
[0033] In another embodiment, the base portion 16 does not include
the capillary ribs 24 and/or the capillary channels, but may be
located instead on a member of the support apparatus such as the
capillary lobe 58 that holds the wick-holder assembly 10.
[0034] It is also contemplated that where the wick-holder assembly
10 has a plurality of components, members, and/or elements, for
example, two of more wick-retention members 12, wicks 14, base
portions 16, heat-conductive elements 18, capillary ribs 24, and/or
legs 26, each component, member and/or element may be independently
selected and configured in regard to positioning, geometry and/or
composition to achieve a desired effect such as flame intensity,
burn time of the fuel charge, and/or volatilization rate of a
fragrance, insecticide, and the like. It is further contemplated
that the wick-holder assembly 10 may have one or more components,
members, and/or elements that are configured to perform one or more
similar functions. In such a case, the wick-holder assembly 10 may
in some embodiments be constructed to be without the component,
member, and/or element whose function is being performed by another
component, member, and/or element. Illustratively, the
heat-conductive elements 18 may be configured to be connected
directly to the wick-retention member 12, thus serving one or more
functions of the base portion 16 as described herein. In such an
embodiment, the wick-holding assembly 10 may be constructed without
the base portion 16 inasmuch as the heat-conductive element 18 is
serving the function of the base portion.
INDUSTRIAL APPLICABILITY
[0035] The present invention provides a user with a wick-holder
assembly that is responsive to thermal changes of a flame disposed
on a wick. The wick-holder assembly may also speed melting of a
fuel charge by moving heat-conductive elements toward the flame and
enhancing heat transfer from the flame to the fuel charge. The
wick-holder assembly may also surround the flame, which reduces the
impact of breezes on the flame, therefore reducing the chances of
the breeze extinguishing the flame.
[0036] Numerous modifications to the present invention will be
apparent to those skilled in the art in view of the foregoing
description. Accordingly, this description is to be construed as
illustrative only and is presented for the purpose of enabling
those skilled in the art to make and use the invention and to teach
the best mode of carrying out same. The exclusive rights to all
modifications within the scope of the impending claims are
reserved.
* * * * *