NZ616766B - Heatable Fluid Bag - Google Patents
Heatable Fluid Bag Download PDFInfo
- Publication number
- NZ616766B NZ616766B NZ616766A NZ61676613A NZ616766B NZ 616766 B NZ616766 B NZ 616766B NZ 616766 A NZ616766 A NZ 616766A NZ 61676613 A NZ61676613 A NZ 61676613A NZ 616766 B NZ616766 B NZ 616766B
- Authority
- NZ
- New Zealand
- Prior art keywords
- bag
- end support
- insulation
- heat
- members
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 85
- 238000009413 insulation Methods 0.000 claims abstract description 95
- 239000000463 material Substances 0.000 claims description 27
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 13
- 210000000088 Lip Anatomy 0.000 claims description 11
- 229920001123 Polycyclohexylenedimethylene terephthalate Polymers 0.000 claims description 10
- 229940035295 Ting Drugs 0.000 claims description 8
- 230000002528 anti-freeze Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 36
- 239000004411 aluminium Substances 0.000 description 27
- 229910052782 aluminium Inorganic materials 0.000 description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 26
- 239000010445 mica Substances 0.000 description 24
- 229910052618 mica group Inorganic materials 0.000 description 24
- 239000000203 mixture Substances 0.000 description 17
- 210000002356 Skeleton Anatomy 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000789 fastener Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- OENIXTHWZWFYIV-UHFFFAOYSA-N 2-[4-[2-[5-(cyclopentylmethyl)-1H-imidazol-2-yl]ethyl]phenyl]benzoic acid Chemical compound OC(=O)C1=CC=CC=C1C(C=C1)=CC=C1CCC(N1)=NC=C1CC1CCCC1 OENIXTHWZWFYIV-UHFFFAOYSA-N 0.000 description 5
- 230000000875 corresponding Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 235000012571 Ficus glomerata Nutrition 0.000 description 2
- 240000000365 Ficus racemosa Species 0.000 description 2
- 229920001721 Polyimide Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000015125 Sterculia urens Nutrition 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 210000001624 Hip Anatomy 0.000 description 1
- 101700015817 LAT2 Proteins 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000295 complement Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
616766 Disclosed is a heater element (200) for a heatable fluid filled bag and a heatable fluid filled bag. The heatable fluid filled bag is heated electrically using a heater element and is portable. An override mechanism ensures that in the event of bag expansion or leakage, the electrical connection is disconnected. The heater element (200) includes a heat generating member (201) having a power connecting member means (202, 203) to heat the element (200) when connected to a power source. A first insulation member (205) and a first heat conductive layer (206), both having ends, covers the heat generating member (201). The first insulation member (205) covers the heat generating member (201) and the first heat conductive layer (206) covers the first insulation layer (205). Inner end support members (207) hold the ends of both the first heat conductive layer (206) and the first insulation member (205). The inner end support members (207) are insulated and at least one member (207) includes at least one aperture (208) to allow the power connecting member means (202, 203) there through. ection is disconnected. The heater element (200) includes a heat generating member (201) having a power connecting member means (202, 203) to heat the element (200) when connected to a power source. A first insulation member (205) and a first heat conductive layer (206), both having ends, covers the heat generating member (201). The first insulation member (205) covers the heat generating member (201) and the first heat conductive layer (206) covers the first insulation layer (205). Inner end support members (207) hold the ends of both the first heat conductive layer (206) and the first insulation member (205). The inner end support members (207) are insulated and at least one member (207) includes at least one aperture (208) to allow the power connecting member means (202, 203) there through.
Description
le Fluid Bag
The invention relates to a fluid bag which includes a body of fluid contained in a bag or
pouch which is able to be heated or cooled. The invention is directed particularly but not
solely towards a heater for a portable fluid bag.
Background of Invention
Hot water bottles have been known for many years. Though these are cheap, they are
difficult to fill and the heating does not last long. Many accidents occur when pouring in hot
water causing scalds and burns to the user. onally these hot water bottles have screw
stoppers which can be very lt to use by the elderly or very young. It is well known
that these types of bottles do not retain the heat for very long.
Simple electrodes like that used in a kettle, are not allowed to be used with any device that
can be electrically charged and or that can touch the body or can be touched as the risk of
burning or electric shock is very high.
In this specification unless the contrary is sly stated, where a document, act or item of
knowledge is referred to or discussed, this reference or discussion is not an admission that
the document, act or item of knowledge or any combination f was at the priority date,
ly available, known to the public, part of common general knowledge; or known to be
relevant to an attempt to solve any problem with which this specification is concerned.
Object of the Invention
It is an object of the invention to provide an improved heatable or coolable fluid bag and
fluid heater that ameliorates some of the antages and limitations of the known art or at
least provide the public with a useful choice.
G:\l94684NZB Amended SPEC 13Feb2014 EHBDOC
Summary of Invention
In a first aspect the invention may broadly be said to reside in a le fluid bag
comprising a bag having sides, adapted to provide an enclosed space for containing a fluid
therein, the bag including the following components of at least one g element, power
connection means, t and switching means at least one mechanical , whereby the
components are arranged to be electrically connected together inside the bag so that when the
power connection means is connected to a power source it causes the heating element to be
heated to heat the fluid wherein the magnetic switch is adapted to protect against a build up
of gasses or pressure and prevent explosion, the magnetic switch includes an elongate
member having ends wherein one end is connected to the circuit located at one side of the
inside of the bag and the other end is connected to the inside of an other side of the bag
whereby the circuit can be broken if the bag expands beyond a certain distance between the
sides of the bag whereby after the bag is heated to a certain ature by the heating
element, it is can be disconnected from the power source to enable the bag to be used as a
portable g member.
Preferably the power connection means is formed as part of a housing which includes a
socket for a plug of the power source wherein the housing is connected to the inside of the
2O bag but is electrically and fluidly separated from the ed fluid.
Preferably the bag can be heated within 10 minutes and when disconnected form the power
, the heating of the bag can last for 5 hours. Preferably one end of the elongate
member is welded to the inside of the bag.
Preferably, the housing es at least one bleed valve which comprises at least one
deformable aperture located with the housing containing the switch which is adapted to
remove excess pressure within the bag wherein the aperture is joined to the fluid or the
enclosed space with the bag. Preferably double insulation is provided for all electrical
circuits, connectors, wiring and switching components.
ably the bag is formed from a material having a material formed of at least one ply of
PVC with welded seems and the housing es at least one thermostat for temperature
G:\l94684NZB Amended SPEC 13Feb2014 EHBDOC
control. ably the heater element includes a heating wire encased by a heater cage
which includes a thermal link fuse, wherein the heater
cage is attached to the bag within the
enclosed space but the g wire is electrically and fluidly separated there from.
Preferably the heater cage includes upper and lower casing members 51 & 63 with doubly
insulated heating wire encased therein wherein the double insulation includes
an alternating
sequence of insulation sheets and conducting sheets whereby the insulating sheet includes
mica material and the conducting sheet includes aluminium.
Preferably the sequence of ting and conducting sheets can include first outer
conducting sheet 52 (outer aluminium shell), first outer insulation sheet 53 (mica sheet), first
inner conducting sheet 54 (inner aluminium sheet), first inner tion sheet 55 (mica
sheet), middle outer perimeter ring 56 (plastic ring), mica t skeleton member for
heating wire 57, heating wire 58, second inner insulation sheet 59 (mica sheet), second
conducting sheet 60 — (aluminium sheet), second outer insulation sheet 61 (mica sheet),
second outer conducting sheet 62 (aluminium sheet). Preferably the heater element can be U
shaped or planar shaped and the fluid can be any fluid that can be heated or cooled.
Preferably the housing includes at least one earth test point to enable the earth connection to
be verified and the g includes an indication light electrically connected to the
power
connection to confirm that power is connected to the circuit. Preferably there is a removable
probe d in a recess in the housing for ng one to insert in the aperture of the bleed
valve to allow air or gases to escape from the enclosed
space of the bag.
In a second aspect the invention may broadly be said to reside in a heater element which
includes a heating wire encased by a heater cage wherein the heater
cage can be attached to
an inside of a bag containing a fluid, with the heating Wire electrically and fluidly separated
there from and able to be connected to a power source to cause the wire to be heated to heat
the fluid, the heater cage including upper and lower casing members 51 & 63 wherein
alternating ce of insulation sheets and conducting sheets is located between the upper
and lower casing members, wherein the sequence of insulating and conducting sheets
include first outer conducting sheet 52 (outer aluminium shell), first outer insulation sheet 53
(mica , first inner ting sheet 54 (inner aluminium sheet), first inner insulation
G:\l94684NZB Amended SPEC 13Feb2014 EHBDOC
sheet 55 (mica , middle outer perimeter ring 56 (plastic ring), mica support skeleton
sheet member for heating wire 57, heating wire 58, second inner insulation sheet 59 (mica
sheet), second conducting sheet 60 — (aluminium sheet), second outer insulation sheet 61
(mica sheet), second outer conducting sheet 62 (aluminium sheet) whereby the outer casing
member are joined together.
Preferably the heater element includes a thermal fuse electrical joined to the heating Wire to
be set at a certain temperature to act as a safety mechanism if the heater wire overheats and
the heater element can be U shaped or planar shaped and the insulating sheet includes a mica
material and the conducting sheets includes an aluminium material.
In a third aspect the invention includes a cold fluid bag sing a bag having sides,
adapted to provide an enclosed space for containing a fluid therein and magnetic switch,
y the fluid is adapted to be made frozen n the magnetic switch is adapted to
protect against a build up of gasses pressure and prevent explosion and includes an elongate
member having ends wherein one end is connected to the circuit located at one side of the
inside of the bag and the other end is ted to the inside of an other side of the bag
whereby the circuit can be broken if the bag s beyond a certain distance between the
sides of the bag wherein the fluid is antifreeze. Preferably, the housing includes at least one
bleed valve which ses at least one deformable aperture located with a housing
containing the switch which is adapted to remove excess pressure within the bag.
In a fourth aspect the invention includes a heater element for a heatable fluid filled bag,
element includes a heat generating member having a power ting member means to
allow the heater element to be heated when connected to a power source, a first insulation
layer having ends and a first heat conductive layer having ends, whereby the heat generating
member is covered with the first insulation layer followed by the first heat conducting layer
to cover the first insulation layer, which are held together at their ends with inner end t
members, the inner end support members being insulative having at least one inner end
support member with at least one aperture to allow the power connecting member means
there through.
G:\l94684NZB Amended SPEC 014 El-IBDOC
Preferably the power connecting member means include at least one electrode in the form of
an electrode plate member electrically connected to the heat ting member sandwiching
the heat generating member there between electrode plate members wherein the power
connecting member means includes at least one wire electrically connected to each electrode
plate member allow for power or electrical connection there between the heater element and
power connection means.
Preferably the heater element includes a second insulation layer having ends, a second heat
conducting layer having ends and middle end support members, wherein the second
tion layer covers the first heat conducting layer and is in the form of a , followed
by the second insulation layer shaped as a sleeve which covers the second insulation layer
whereby the middle end support members are formed of insulation material and are d
slidably interfit into the ends of the second insulation member and second heat ting
member to cover and abut the inner end support s and at least one middle end
support member has at least one aperture to allow the power connecting member means there
through.
ably the heat generating member is formed from polycyclohexylenedimethylene
terephthalate (PCT), the first and second insulation layers are formed from plastics, and the
first and second heat conducting layers are formed from a metal in the shape of a sleeve,
wherein the inner end support members and middle end t members are formed as plate
cap shaped members with an inner side with a protruding recessed lip n, the apertures
being formed as protruding cylindrical members on the opposite side of the plate cap to that
of the lip portion.
Preferably the outer end support members abut the middle end support members on each end
of the second heat conductive layer, whereby at least one outer end support member has
apertures for the electrical connection there through which can be sealed to e fluid
there through, the apertures of the inner, middle and outer end support members are aligned
to allow electrical connection through all apertures wherein each outer end support member
is L shaped with a foot adapted to allow for connect to an inside of the bag and fixing to the
ends of the second heat conducting member.
Preferably the first and second insulation layers can each be formed as at leaast double
insulation .
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
In a fifth aspect the invention includes a heatable fluid filled bag d to be electrically
ted to a power source, the fluid filled bag includes a bag enclosing a fluid, at least one
heater element, and housing including power connection means adapted to allow the bag to
be electrically connected to a power source, the housing consists of at least one insulation
layer, the heater t including a heat generating member having power connecting
member means, a first insulation layer having ends and a first heat conductive layer having
ends, whereby the heat generating member is covered with the first insulation layer followed
by the heat conducting layer covering the first insulation layer, whereby the first second
insulation layers and heat conducting layers are held together at their ends with inner end
support members being insulative or are formed of insulation material and having at least
one of the inner end support members with at least one re to allow the power
connecting member means there through to connect to the power connection means.
Preferably the heater element includes a second tion layer having ends, a second heat
conducting layer having ends and middle end support members, wherein the second
insulation layer covers the first heat conducting layer and is in the form of a sleeve, followed
by the second insulation layer shaped as a sleeve which covers the second insulation layer
whereby the middle end support members are formed of insulation material and are adapted
slidably interfit into the ends of the second insulation member and second heat conducting
member to cover and abut the inner end support s and at least one middle end
support member has at least one aperture to allow the power connecting member means there
through, n outer end t s abut the middle end support s on each
end of the second heat conductive layer, whereby at least one outer end support member has
apertures for the electrical connection there through which can be sealed to exclude fluid
there through, the res of the inner, middle and outer end support member are d to
allow electrical connection through all apertures wherein each outer end support member is
L shaped with a foot adapted to allow for connect to an inside of the bag and fixing to the
ends of the second heat conducting member.
Preferably the housing the housing includes at least one inner housing including at least one
recess for the power connection means, the recess for the power connection means includes a
plug housing base d to slidably interfit within the inner housing and being
cylindrically shaped with a recess therein, a plug holder having cylindrical cap with a plug
recess which is adapted to receive electrical prongs followed by a plug prong holder fitting,
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
followed by an access end cap attachable to the bag, the inner housing also has another
with
recess for a safety switching means which includes a slide housing, switch, bar member
of the bag
a magnet and an elongate member with a magnet joined at one end to the inside
and an other end operatively connected by power connection member means to a switch and
abutting magnets whereby the slide housing holds the bar
power tion means by
member, switch and one end of the elongate member having the magnet and ion of
the bag walls with the elongate member causes magnets to separate to cause the power
connection means to the safety switch means to be non electrically connected to the power
source.
Preferably the heat generating member is formed from polycyclohexylenedimethylene
terephthalate (PCT), the first and second insulation layers are formed from plastics, and the
first and second heat conducting layers are formed from a metal in the shape of a sleeve,
wherein the inner end support members and middle end support members are formed as plate
recessed lip portion, the apertures
cap shaped members with an inner side with a protruding
being formed as protruding cylindrical members on the opposite side of the plate cap to that
of the lip portion.
Preferably the first and second tion layers and housing can each be formed as at least
double insulation layers, the bag includes an le or le bag opening in the form of
from the bag and
a bleed valve or plug in hole, to allow air or fluid to be inputted or emptied
the bag includes a stat electrically attached to the power connection means between
the plug holder housing and power connection recess, and the end cap can have an LED to
show r electrically connected or not.
Preferably the bag es the safety switching means includes a magnet located in the
elongate member which is joined to a magnet in the safety switching means. Preferably the
fluid can include antifreeze to allow the bag to be cooled. Preferably the fluid can heated by
the heater element to a temperature n -10° C to 100° C.
To those skilled in the art to which the invention relates, many changes in construction and
widely differing embodiments and application of the invention will suggest lves
without departing from the scope of the invention as defined in the ed claims. The
3O disclosures and the descriptions herein are purely illustrative and are not intended to be
limiting.
G:\l94684NZB Amended SPEC 13Feb2014 EHB.DOC
Brief Description
The invention will now be described, by way of example only, by reference to the
accompanying drawings:
Figure 1 is a perspective view of a heatable or coolable fluid bag with a first heater element.
Figure 2 is a perspective view of part of the magnetic switch
Figure 3 is a perspective view of another part of the ic switch.
Figure 4 is a perspective inner view of a casing for the first heater
Figure 5 is a perspective view of the first heater
Figure 6 is a perspective view of the housing for the bag
Figure 6a is a top plan View of the housing of figure 6
Figure 7 is a rear ctive view of the end cap for the housing
Figure 8 is a perspective view of a bleed hole probe
Figure 9 is a perspective view of a second heater and housing for a heatable fluid bag.
Figure 10 is a perspective View of the components of a third heater for a heatable fluid bag
Figure 11 is a perspective view of a bag with the third heater of figure 10
Figure 12 is a perspective View of a fourth heater assembly for a heatable fluid bag
Figure 13 is a bottom plan View of the bag of figure 12
Figure 14 is a side View of the bag of figure 12
Figure 15 is a top plan view of the bag of figure 12
Figure 16 is a perspective view of the heatable or coolable bag with a fifth heater element
Figure 17 is a perspective view of the ents of the heater element of figure 16
Figure 18 is a perspective View of the components of the power connection and safety
switching means
Figures 18a is rear ctive view of the arrangement as shown in figure 18
Figure 18b is a side perspective view
Figure 18c is perspective View of the safety ing means
Figure 19 is a perspective view of the heater element of figure 18
Description of Drawings
The following description will describe the invention in relation to preferred embodiments of
the invention, namely a le or le fluid bag and heater. The heatable fluid bag
G:\194684NZB Amended SPEC 13Feb2014 EHB.DOC
seeks to provide an ted heater element with respect to a fluid. The invention is in no
way limited to these preferred embodiments as they are purely to exemplify the invention
only and that le variations and modifications would be readily apparent without
departing from the scope of the invention.
Heatable Fluid Bag
Figures 1-20 shows a le fluid bag 1 which comprises a bag 2, fluid 3 and components
showing different examples for the heater element. The container 2 is formed of a material
having an outer surface 5, inner surface 6, sides, and edges 8. The ner 2 is adapted to
provide a fluidly sealed enclosed space 8 for ning the fluid 3 therein.
The bag 2 includes the following components of at least one heater including a first g
t 10, and housing including power connection means 11, electrical circuit 12 and
switching components of at least one magnetic mechanical switch 13. The switching
components are arranged to be electrically connected together inside the bag so that when the
power tion means 11 is connected to a power source, it causes heating element 10 to
be heated to heat the fluid at a certain temperature for a certain time.
As shown in figures 1, 4 and 5 the heating element 10 can be located in a heating cage 10a
which is connected and supported to an inside surface of the bag 2. Figure 4 only, shows
how one half of the assembled heater cage. The heating element 10 can include a U shaped
member 14 with connectors 15 and earth connectors 16 and heating wire. Electrical circuit
12 comprises wiring and suitable connections ically connecting the heating wire of the
heating element 10 to the power connection means 11. Power connection means 11 is
housed in a housing 17 which may also be supported by the inside of the bag 2 and includes
socket for a plug which is part of the power source and/or an electrical circuit (e.g. having
three spaced slots). Housing 17 can include a rectangular box like structure forming a
recessed space therein, with a removable lid.
In use the electric hot fluid bag is simply plugged into a power source and allowed to heat to
a certain temperature for a certain time. For example, depending on the size of bag and
element 10 ing heating Wire, the time to properly heat the fluid and bag can vary but as
an example for a typical hand held bag only 10 minutes is required to heat. After heating,
684NZB Amended SPEC 13Feb2014 EHB.DOC
-10..
and unplugging or disconnection from the power source, the heated bag is ready for use as a
portable device able to heat anything which such g can last for approximately 5 hours.
The ic switch 13 is adapted to protect against a build up of gasses pressure and
explosion and includes an elongate member having ends 18 wherein one end 18 is connected
to the electrical circuit 12 located at one side of the inside of the bag and the other end 18 is
connected to the inside of an other side of the container y the electrical circuit 12 can
be broken if the bag expands beyond a certain distance between the insides of the bag or
beyond a certain pressure.
Housing 17 includes at least one bleed valve 20 located adjacent to power connection means
which comprises at least one deformable re 21 located within a recess in the housing
17 which is adapted to remove excess pressure within the bag. As shown in figure 8 the hot
or cold fluid bag can include a probe 23 which can be removably stored in a recess in the
housing 17. Probe 23 is shaped as an elongate tapered member 24 with a head 25 at the
thicker end whereby in use one holds the head to push the probe into the deformable aperture
to let out or release air or gases held within the enclosed space. The bleed valve 20 can
comprise a deformable member made up of two circular tubular members slidably
interlocking with each other having the aperture formed as a central hole.
Double insulation is provided for all electrical ts, connectors, wiring and ing
components. The bag 2 can be of any suitable shape and formed for example, from a
material comprising at least one ply of PVC. Alternatively material can have an outside
al of 3 ply PVC with welded seams. g 17 includes at least one thermostat 32
for temperature control. The heating cage 10a as shown in figure 4 houses the heating
element, electrical tions and a thermal fuse 33 and is sealed with resin for protection
and waterproofing. Housing 17 includes at least one earth test point 35 to enable the earth
connection to be verified. g 17 can also include an indication light 36 electrically
connected to the power connection to confirm that power is connected to the circuit.
As shown in figure 1 the electrical circuit is formed as at least double insulated single bundle
of wires going from the heating element 10 to the power connection means 11. The elongate
member of the magnetic switch 13 can include a tubular ure which can be solid or
G:\194684NZB Amended SPEC 13Feb2014 EI-IBDOC
hollow. End 18 ofthe elongate member includes an interlocking structure including a
circular head structure 37 having a slot 38 therein which slidably inter-fits with an elongate
bar member having an elongate body with a circular head 39 with complementary slot 40 at
one end, with the rest of the body comprising two parallel bars 41 & 42 of a gular
cross section with an end cross bar 43 at the end opposite to the circular head 39.
To complete the circuit the heads and slots inter-slide with each other so that if the bag
expands too much one side will move away from the other side taking the elongate member
with it which will cause the head 37 to move out of slots of head 39 to break the electrical
circuit. As shown in the rear View of figure 7 at least part of the housing including the
magnetic switch 13, can have a removable cover 45 affixed by a post 46 to fits and is affixed
to hole 20a. Figures 6 & 6a show the housing in close up without the circuit.
Second Heater Element — figure 9
Figure 9 shows another example of the heater element in the form similar to the first heater
element but with two wires protruding for electrical connected to a power source which can
be called a second heater element. Also shown in an openable cap 47 to cover the power
connection means 11. The outer casing of this heater element is formed of a c which is
so thick or reinforced as to be considered as being double insulated. The outer casing can be
a thermoplastic which can be injection moulded over a metal element or electrode.
Third Heater Element — figures 10 & 11
A third heater element is shown in Figures 10-11 which is another version of the heater
element 10 of figures 1, 4 and 5 and 9, which is nced as heater element 50 which
includes a double insulation layer, above and below the heating wires being electrically
connected to the other ents of the hot fluid bag. This heater element 50 is shaped as
a substantially planar member made up of layered planar ting sheet members and
conducting sheet members whereas as the other heating element was U shaped, and includes
the other components already disclosed ie the bag, the power connection means 11, housing
3O 17 and mechanical magnetic switch 13, bleed hole 20, tion light 36 and thermostat 32.
This sheet like structure effectively increases the heating area and conductiveness to the heat
sink and is designed as a double independent insulated individually sealed structure. The
ature fuse can be built in with heater t 50, as a power cut out means.
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
The conducting s in this heating element example can be aluminium material which
is designed to spread or dissipate the heat to the water, better. In y, there is an
ating sequence of insulating members and conducting members. As shown in figure 9
starting from one side of the heater element 50 there are several components starting from
the top but bed with reference to an inner portion:
- first non conducting outer casing member 51 (plastics)
- first outer conducting sheet 52 (outer aluminium shell)
- first outer insulation sheet 53 (double mica sheet)
- first inner conducting sheet 54 (inner aluminium sheet)
— first inner insulation sheet 55 (mica sheet eg 0.4mm thick)
- middle outer perimeter ring 56 (plastic ring)
- mica support skeleton support member for heating wire 57
- heating wire 58 wound around the skeleton support member 57
- second inner insulation sheet 59 (mica sheet)
- second conducting sheet 60 — (aluminium sheet)
- second outer insulation sheet 61 (double mica sheet)
- second outer conducting sheet 62 (aluminium sheet)
- second non conducting outer casing member 63 (plastics)
Firstly the components can begin with the first non conducting outer casing member in the
form of plastic protection casing 51 shaped as a grid like pattern member having a perimeter
curved wall. The casing can be formed from a high temperature plastics. Underneath outer
casing 51 there is a thermal and electrical conducting sheet 52 in the form of an outer
aluminium shell shaped as a perimeter member having an upright wall and horizontal wall
whereby the upright wall is dimensioned and shaped to slidably within the curved wall of the
first non conducting casing 51 while the horizontal wall abuts an edge of the curved wall.
Below the outer casing 51 and conducting sheet 52 there is a combination of materials
3O ing first insulation sheet 53 formed of mica material as a sheet material ing over
an area less than the area bordered by the conducting layer 52. First sheet 53 can be formed
as a double sheet. Below the first insulation sheet 53 there is the first inner conducting sheet
54 in the form of an aluminium sheet material (eg foil of 1mm thick) of a similar area to first
684NZB d SPEC 13Feb2014 EHB.DOC
insulation sheet 53. Below inner conducting sheet 54 there is a first inner insulation sheet 55
in the form of a mica sheet material 55.
Below second insulation sheet 55 there is the mica skeleton support member 57 which is
designed and shaped to support the heating wire 58 which can be for example nickel
chromium alloy which as shown in figure 8 s in a loop into the skeleton member in
parallel loops to return back out of the skeleton member and is connected by high
temperature resistant wire connection to the power connection means 1 1.
Below and abutting skeleton member 57 and heating wire 58 there is the second inner
insulation sheet 59 of a similar area to sheets 55 and 56. Below and abutting second inner
insulation sheet 59 there is the second inner conducting sheet 60 which is also dimensioned
having a r area to sheet 59. r in this example second inner conducting sheet 60
is formed having a sheet bordered by an edging.
Below and abutting sheet 60 there is the second insulating sheet 61 being shaped and
dimensioned to be larger in area that sheets 59 and 60. Further below and abutting a second
outer insulation sheet 61 there is second outer ting sheet 62. Sheet 61 can be formed
as a double sheet of mica. Sheet 62 is larger in area to sheets 59 and 60. Finally at the very
bottom or opposite end is the second outer casing 63 which is shaped as a planar grid like
sheet having apertures therein.
In the middle of the above assembly of components, the middle outer perimeter ring member
56 is formed of a ring like elongate wall member having vertically extending prong members
extending from the top and bottom of the elongate wall member. The prong members for the
top can be aligned with or not the lower prong members. The top prong members are
designed to ly inter-fit with corresponding sized and oned slots (not shown) in
and underneath the first outer casing 51 to form an upper encased area. Middle ruler
perimeter ring 56 has an area larger than sheets 53, 54, 55 & 59, 60, 61 and of a thickness
3O that allows sheets 53, 54, 55, 57, 58 to be encased by the first outer case member 51 and
middle outer ter ring member 56.
G:\l94684NZB Amended SPEC 13Feb2014 EHB.DOC
On the other side of middle outer perimeter ring member 56 the lower prong members are
shaped to slidable inter-fit with corresponding slots in the second outer casing member 63 to
encase sheets 59, 60, 61, 62.
Inner conducting sheet 60 is formed as sheet with an outer perimeter edge on at least three of
the four sides forming a recessed area whereby sheet 59 can be slidably received therein said
recessed area. On top of sheet 59, skeleton member 57 with the heated wire 58 can also be
received Within the recess area of sheet 60.
The first and second inner conductions sheets 54 and 60 (which contain the following sheet
of mica sheet 55, mica on support sheet 57, wires 58, mica sheet 59) can be joined
together by any suitable means that seals the two aluminium sheets together to keep water or
moisture from entering in between while compressing to bond the above sheets inbetween.
For example this can be done by welding. Other connecting and sealing means can be uses
such as epoxy. The outer casing members 51 and 63 can be ted or joined together to
form an assembled heater element 50 to give for example a thickness of 6mm. The casing
members protect the assembly below and yet also allow the water to ate over sheets
and also function to space the heater element from direct contact with the bag walls. As an
example power requirements may be 110V to 220V with power 450 watts. The wire can be
wound in 1.5mm spacing intervals and skeleton 57 may be 90mm longx40 mm wide and a
ess of 1mm.
Cold Fluid Bag
The invention can also e a cold fluid bag which comprises a bag having sides, adapted
to provide an enclosed space for ning a fluid 3 therein and magnetic switch 13. In this
example the fluid is adapted to be made cold by g in a fridge. This fluid can include a
type of antifreeze or e of antifreeze and water or any fluid that can be made cold or
frozen. The cold fluid bag can also include at least one bleed valve 20 and probe.
Like in the hot fluid bag, magnetic switch 13 is adapted to protect against a build up of
gasses pressure and explosion and includes an elongate member having ends. One end of the
elongate member is connected to the ical circuit 12 located at one side of the inside of
the bag and the other end 17 is connected to the inside of another side of the bag. The
G:\194684NZB Amended SPEC 13Feb2014 EHB.DOC
electrical circuit 12 can be broken if the bag expands beyond a certain distance between the
sides of the bag. The structure of the magnetic switch 13 can be the same as that described
for the hot fluid bag.
Fourth Heater Element — figures 12-15
Similarly to the other bags in figures l-1 1, there is shown a fourth heater element 110 which
is electrically connected to a housing 117 having power connection means 111, and magnetic
switching means 113 in a bag (not shown) with fluid therein being of similar construction to
the other bags of figures 1-11 and includes an elongate member having ends 118 wherein
this example further heater element has three wires being ically connected to the power
connection means and magnetic ing means with one of the wires being a tester Wire
119 with the other Wires ically connecting the prongs to the element. Also this further
heater element is encased in an insulative support cage 116.
Fifth Heater Element — figures 16-19
In this example, there is a fifth heater element 200 which is operatively combined with all
the other components such as power connection means 217 and safety switching means 213
in a housing in a bag 202a with fluid ned therein. Also similar the other bags of
figures 1-15 fifth heater element as seen in figures 16-20 has at least an outer housing, inner
housing to house the power connection means and safety switching means.
Power tion means can include a thermostat, resister, a power plug housing base,
electrical prongs (eg like that found in a plug), wiring, fixings, plug holder, led, end cap.
Safety switching means includes a switch, ntal slide, cover, elongate member with
magnet at one end, d bar with another magnet. Fifth heater element 200 includes from
the centre moving outwards, a first then second and a third combination of components.
The first combination includes from the centre, a heat generating member 201 (eg doped
pct material) which is encased and abutted with an electrical connecting member which can
include just power connecting member means in the form of electrodes with wires joined
directly to the heat generating member 201 or they can be formed as a first outer electrode
plate member 202 being part of an electric circuit and a second electrode plate member 203
G:\l94684NZB Amended SPEC 014 EHB.DOC
~16-
being the other part of the electric circuit having ends. Each first and second electrode plate
members having ends, or at least the electrodes, have power or electrical connection in the
form of wires 204 connected thereto one end to allow connection to a power source.
Heat generating member 201 needs to be able to act as a resistor to convert electrical energy
to thermal energy. For e heat generating member 201 having ends, can be made from
any al that has ional ity, chemical resistance and is also particularly
resistant to high temperatures and hydrolysis. For example heat generating member can
include polycyclohexylenedimethylene terephthalate (PCT). Electrode plate members 202,
203 can be any material of any thickness that is able to allow t through and act as a
heat sink such as for example gold, sliver copper brass steel, stainless steel aluminium.
Completely encasing the first and second electrode plate members 202, 203 there is a first
insulation member or layer in the form of a member 205 in the form of at least one sheet or
film layer of any selected thickness having ends, followed by an abutting first conductive
layer 206 in the form of a sheet member 206 of any selected thickness having ends. For
example, film layer 205 can be formed from a polyimide compound and can be layered as a
double insulation. First conductive sheet member or layer 206 is in the form of a sleeve
having ends, which can be formed of any material able to conduct heat such as aluminium,
steel, copper etc. Aluminium is useful e it is light weight and has strength. The ends,
of heat conductive sheet member are d to receive inner end support members 207 ie a
pair. Inner end support member is formed as an insulation member which can be for
example made of plastic or silicon.
The first combination being an inner most ation which supports and maintains outer
combinations including the second and third combinations. Inner end support s 207
are shaped as a planar cap with at least one outwardly protruding aperture or hole 208 for the
wire(s) 204 on one of the end members, to protrude there through, on one side of each cap
and on the opposite side of the cap there is a protruding recessed lip portion or ion 209
sized and adapted to capture the ends of the first and second outer sheet members. The holes
208 are only ed on at least one of the inner end support members 207.
In summary the first combination can include for example, in cross section and in order from
top to bottom:
G:\l94684NZB Amended SPEC 13Feb2014 EHB.DOC
_ 17 -
=first conductive heat member 206 (eg aluminium) with inner end t member 207
=double layer of inner insulation layer 205
=electrode plate members 203/heat generating member 201/electrode plate member 202 with
wires 204
=double inner insulation layer 205
=first conductive heat member 206 (eg aluminium) with inner end support member 207
Outside of, encasing and abutting the first combination, there is the second combination
which includes a second insulation sheet member or layer 210 which abuts the first
conductive heat member 206 of the first combination. Second insulation sheet member 210
is formed as an elongate sleeve, shaped with ends which like the other insulation sheet layer
205, can be formed from or include any insulation material of any thickness and dimension,
not able to conduct and able seal out any fluid, to provide a physical barrier to electricity,
like for example plastics or polyimide. The second insulation sheet layer or member 210 can
be formed from at least one insulation layer. In one example second tion sheet layer
210 can be double insulated member.
As part of the second combination, encasing and abutting the second insulation sheet layer or
member 210 is a second aluminium sleeve layer or member 215 having open ends which are
capped and fixed by middle end support members 212 which together support and keep all
previous sheets in their appropriate te positions. Middle end support members 212 are
similar in shape and material to the inner end support members but are bigger in area than
the inner support members, with r apertures or holes 212a for the wires 204 on one of
the middle end support s 212, as aligned with the other holes 208 of the inner end
support member, but the lip formation 214 is adapted to fit within the ends of the second
ium sleeve member 215. Electrically supported by the inner aluminium sleeve
member 210 but electrically connected to the electrode plate s 202 or 203, is an
electrical connector 210a
Outside of, encasing and abutting the second combination is a third ation. The third
combination includes outer end support members 216 which are larger in area than the
middle end support members 212. Outer end support members 216 abut the middle end
support s 212 to also keep all sheets and sleeve member in various combinations in
their proper positions with t to each other. Outer end support members 216 also has
G:\l94684NZB Amended SPEC 13Feb2014 EHB.DOC
apertures or holes 218 protruding at one outer side of a cap for the wires 204, having no lip
but having a foot 219 whereby the outer end support members are L shaped in cross section
with the foot 219 being slotted to allow fixing to the bag by any suitable means including
fasteners, ve, heat sealing or more brackets etc. Outer end support s 216 are
not formed necessarily of an insulation material but are formed from any material that
enables proper support and connection to the second aluminium sheet 215 and the bag 202a.
When assembled all res or holes 208, 212a, 218 are aligned (can include a protruding
ted conical shape which slidably interfit) to allow the wires 204 to go from the first
and second electrode sheets 202, 203 outwardly of the heat element to the power connection
means 211. Outer end support members 216 also have fixing means 220 whereby suitable
fasteners and or fittings (eg bolts and/or brackets and/or clamps) can be inserted to affix the
outer end s to the outer aluminium sleeve to then keep all of the heater element
components fixed and operationally, connected together. Outer end support member holes
218 are sealed around the wires 208 to prevent entry of fluid there through.
Middle end support members 212 are dimensioned in area to abut only part of the end edge
of the second sleeve members 215 to leave exposed a recessed perimeter end edge for
attachment of the fasteners 220 from the outer end support s 216 to the second sleeve
215 whereby the outer end t member is spaced from the exposed end forming a gap
with only the fasteners bridging the gap there between. In other options there may not
exposed end whereby the outer end support member can overlap with middle end support
s so that fasteners 220 extend through the middle end support member to engage
with the ends of second heat conducting member 215.
As shown in figures 18, 18a and 18b, the housing 217 includes an inner housing 217a and
outer housing 217b to form a double insulated housing. Also included is power connection
means 217 which is supported and affixed to inner housing 217a and safety switching means
213 being electrically ted to the power connections means 217 to act as a method of
cutting power to the bag or element 200 for any reason such as electrical fault or bag rupture
or loss of fluid etc. Any type of override is possible such as for example a magnetic
switching means or electronic fuse or solenoid.
Outer housing 217b is physically connected to at least the inside of the bag 202a to face or
abut the fluid and power connection means 217 which includes any means able to ically
G:\l94684NZB d SPEC 13Feb2014 EHBDOC
connect a power inlet to the heat element and/or heat generator 201 and/or electrode plates
members 202, 203 such as for example wireless or wire connection(s) 217C. The wire
connection 217C can be in the form of one cable made up of more than one wire or there can
be separate wires 210a with a wire tivity testing means.
Inner housing 217a includes safety switching recess 230 which for example can be
rectangular in shape and power connection recess 231 which for example can be circular in
shape). The power connection means 217 which is operatively connected and supported by
the power connection recess 231 includes a plug housing base 232 (for e can be
cylindrical in shaped with a rectangular recess therein) for electrical prongs 233, followed by
a plug holder 234 (for example can include a circular ring at top with cylindrical body with a
rectangular recess) in shape with a rectangular ) which slots over the plug g
based g the prongs 233 to be upwardly protruding through the base of the rectangular
recess.
Finally, there is a power connecting end cap 236 (for example can be circular in shape with a
fixing post) which allows for access to the prongs 233 to connect to a power source. A light
237 in the form of a LED can be included which will show whether the power is on or not.
Movable fixing for the cap 236 to the plug holder 234 can include a spring and bolt fastener
240, though other types of fixing are also possible to affix the post underneath the cap 236
into a post base recess in holder 234. When assembled the protruding recess of the holder
234 slides into the recess of the housing base 232.
Safety switch recess 230 which is nt power tion recess 231 and is joined by a
connecting recess 230a, includes the safety ing means 213. Safety switching means
213 includes an elongate member 238 having ends with one end being electrically connected
by at least one magnet 238a with the power connection means, in a d elongate double
bar 242 which bar 243 is slidably mounted on/in a horizontal slide plate 243 on each side of
the recess 230 (drawings only show one slide which function to mount the switch 245 and in
the bar 242 with the elongate member 238 into the recess of the inner housing 217a) and
includes at least one magnet 242a located at one end protruding through aperture 241. When
assembled magnet 238a abuts either directly or indirectly to form a magnetic connection
there between to complete the power connection from the power connection means tot he
element. Distal end 23 8b of elongate member 238 protrudes through aperture 241 in recess
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
230, and extends to be connected or joined to an opposite inside of the bag wall so that if the
bag expands too much or to a desired level or pressure, the elongate member 238 moves with
the bag wall to break the magnet 238a to magnet 242a connection in regard to the ical
connection at the opposite end to the power connection means. Safety switching means 213
es a switch 245 (eg a micro switch) ically connected to power tion means
Via connecting recess 230a. Recess 230 has a removable cover cap 246.
A thermostat 250 (eg can be tubular in shape) and resistor 250a can be included as an
optional feature which can be operationally included with the power connection recess 231
to automatically cut power to the bag whenever a certain temperature is d. Like the
other versions any of the previous components can be combined or included. The fluid can
include antifreeze or not, to allow the bag to be used as a hot water bottle or as a cooling bag.
The bag of the present invention is ed to be cooled and heated with the following
range of temperaturesz-IO" C to 100° C though any temperature is possible. The bag includes
at least one openable and closable bag opening 247 to allow air or fluid to be inputted or
emptied. The bag opening 247 can include a simple press releasable valve or a plug in a hole
type valve as seen in figure 16.
It will also be understood that where a product, method or process as herein described or
claimed and that is sold incomplete, as individual components, or as a “kit of Parts”, that
such exploitation will fall within the ambit of the ion.
These and other features and teristics of the present invention, as well as the method of
operation and functions of the related elements of structures and the combination of parts and
ics of manufacture, will become more apparent upon consideration of the following
description with reference to the anying drawings, all of which form part of this
specification, wherein like nce numerals designate corresponding parts in the various
figures.
For purposes of the description hereinafter, the terms “upper”, ”, “right”, “left”,
“vertical”, “horizontal”, “top”, “bottom”, “lateral”, “longitudinal” and derivatives thereof
shall relate to the invention as it is oriented in the drawing figures. However it is to be
understood that the invention may assume various alternative variations, except where
expressly specified to the contrary. It is also to be understood that the specific s
illustrated in the attached drawings, and described in the following specification are simply
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
exemplary embodiments of the invention. Hence specific dimensions and other al
characteristics related to the embodiments disclosed herein are not to be considered as
limiting.
Advantages
a) Electric shock tion
b) Double insulated heater element
0) Able to let air out or bled air
d) Able to cut switch if bag expands too much
e) Modest cost
i) Easy to heat or cool
g) Retains heat for long period
h) Many safety features
i) Tested by approved authorities
j) Able to be used as bed warmer or al warmer
k) Able to use as a heatable bag or coolable bag
1) Easy to use
Variations
Throughout the description of this specification, the word “comprise” and variations of that
word such as “comprising” and “comprises”, are not intended to exclude other additives,
components, integers or steps. The bag can be formed of any suitable shape such as
gular square or elongate depending on the type of use envisaged. The bag itself can be
used to warm or cool anything or be used on any part of the body like for example as a bed
warmer or personal warmer for the waist or neck. The heating element is shown as being
horse shoe shaped or plate like but can be any shape. Optionally the bag can include various
covers to improve or change the look and perhaps provide better heat retention or comfort,
like for example a sheepskin cover.
3O It will also be understood that where a product, method or s as herein described or
d and that is sold incomplete, as dual components, or as a “kit of Parts”, that
such exploitation will fall within the ambit of the invention. These and other features and
G:\l94684NZB Amended SPEC 13Feb2014 EHB.DOC
characteristics of the present invention, as well as the method of operation and functions of
the related elements of ures and the combination of parts and economics of
manufacture, will become more apparent upon eration of the following description
with reference to the accompanying drawings, all of which form part of this specification,
n like reference numerals designate corresponding parts in the various figures.
For the heater element 10, 50, 110, 200 there can be any number, thickness and shape of
layers or sheets of insulating and conducting sheets to cause the heating wire to be properly
insulated. For the other use of the bag ie instead of being a heatable bag, the fluid for the bag,
can include other additives such as antifreeze or have a different fluid which can be a
freezable material like antifreeze with water to enable the bag to be cooled. Alternatively the
fluid or water from the bag can be emptied and replaced accordingly. In l the fluid
can be ed to be cooled and heated within a range of minus 10 degrees Celsius to 100
degrees Celsius. Any temperature range is possible. Though the term “bag” is used, equally
other terms relating to different uses are also possible such as for example foot warmers and
heating pads, containers or pouches.
As shown in the figures like for e in figures 16-19 the electrode plates can be
rectangular in shape, the insulation layers can be shaped as sheets or sleeves, heat conductive
shapes can also be as sheets or sleeves. The number of layers can be any number. For
example heat t sheet 215 can be formed as a sleeve with an upper and lower face
being grooved to further assist in heat transfer from the heater element. Also sheet 215 has
threaded holes to e fixing means 220 to removably affix the outer end support member
216 to the sheet 215. End caps 207 and 212 can be rectangular shaped with end cap 212
being larger than the inner end cap 207.
For purposes of the description hereinafter, the terms “upper”, “lower”, “right”, ,
cal”, “horizontal”, “top”, “bottom”, “lateral”, “longitudinal” and derivatives thereof
shall relate to the invention as it is oriented in the drawing figures. However it is to be
understood that the invention may assume various ative variations, except where
expressly specified to the contrary. It is also to be understood that the specific devices
illustrated in the attached drawings, and bed in the following specification are simply
exemplary embodiments of the invention. Hence specific dimensions and other physical
G:\194684NZB Amended SPEC 13Feb2014 EHBDOC
characteristics related to the embodiments disclosed herein are not to be considered as
limiting.
It will of course be realised that while the foregoing has been given by
way of illustrative
example of this invention, all such and other modifications and variations thereto as would
be apparent to persons skilled in the art are deemed to fall within the broad
scope and ambit
of this invention as is hereinbefore described.
G:\194684NZB d SPEC 014 EI-IBDOC
Claims (14)
- Claim 1: A heater element for a heatable fluid filled bag, element includes a heat ting member having a power connecting member means to allow the heater t to be heated when connected to a power source, a first insulation layer having ends and a first heat conductive layer having ends, whereby the heat generating member is covered with the first 10 insulation layer followed by the first heat conducting layer to cover the first tion layer, which are held together at their ends with inner end support members, the inner end support members being tive having at least one inner end support member with at least one aperture to allow the power connecting member means there through.
- Claim 2. The heater element as claimed in claim 1 wherein the power connecting member 15 means e at least one electrode in the form of an electrode plate member electrically ted to the heat generating member sandwiching the heat generating member there between electrode plate members n the power connecting member means includes at least one wire electrically connected to each electrode plate member allow for power connection there between the heater t and power connection means. 20 Claim 3. The heater element as claimed in claim 1 or 2 wherein the heater element includes a second insulation layer having ends, a second heat conducting layer having ends and middle end support members, wherein the second insulation layer covers the first heat conducting layer and is in the form of a sleeve, followed by the second insulation layer shaped as a sleeve which covers the second insulation layer whereby the middle end support
- 25. members are formed of insulation material and are adapted slidably interfit into the ends of the second insulation member and second heat conducting member to cover and abut the inner end support members and at least one middle end support member has at least one aperture to allow the power connecting member means there through.
- Claim 4: The heater element as d in any one of claims 1-3 wherein the heat 30 generating member is formed from polycyclohexylenedimethylene terephthalate (PCT), the first and second insulation layers are formed from plastics, and the first and second heat G:\194684NZB Amended SPEC 13Feb2014 EHB.DOC conducting layers are formed from a metal in the shape of a , wherein the inner end support members and middle end support members are formed as plate cap shaped members with an inner side with a protruding recessed lip portion, the apertures being formed as protruding cylindrical members on the opposite side of the plate cap to that of the lip portion.
- Claim 5. The heater element as claimed in claim 4 wherein outer end support members abut the middle end t members on each end of the second heat conductive layer, whereby at least one outer end support member has res for the power connecting member to extend there through which can be sealed to exclude fluid there h, the apertures of the inner, middle and outer end support members are aligned to allow electrical connection 10 through all res wherein each outer end support member is L shaped with a foot adapted to allow for connection to an inside of the bag and fixing to the ends of the second heat conducting member.
- Claim 6: The heater element as claimed in claim 5 wherein the first and second insulation layers can each be formed as double insulation . 15
- Claim 7: A heatable fluid filled bag adapted to be electrically connected to a power source, the fluid filled bag includes a bag enclosing a fluid, at least one heater element, and housing including power connection means adapted to allow the bag to be electrically connected to a power source, the housing consists of at least one insulation layer, the heater t including a heat generating member having power connecting member means, a first 20 insulation layer having ends and a first heat conductive layer having ends, whereby the heat generating member is covered with the first insulation layer followed by the heat conducting layer covering the first insulation layer, whereby the first second insulation layers and heat conducting layers are held together at their ends with inner end support s being insulative and having at least one of the inner end support members with at least one aperture 25 to allow the power connecting member means there through to connect to the power tion means.
- Claim 8: The heatable fluid filled bag as claimed in claim 7 wherein the heater element includes a second insulation layer having ends, a second heat conducting layer having ends and middle end support members, n the second insulation layer covers the first heat 30 conducting layer and is in the form of a sleeve, followed by the second insulation layer shaped as a sleeve which covers the second insulation layer whereby the middle end support G:\l94684NZB Amended SPEC 13Feb2014 EHBDOC members are formed of insulation material and are d slidably interfit into the ends of the second insulation member and second heat conducting member to cover and abut the inner end t members and at least one middle end support member has at least one aperture to allow an electrical connecting member there through, n outer end support members abut the middle end support members on each end of the second heat conductive layer, whereby at least one outer end t member has apertures for the electrical tion there through which can be sealed to exclude fluid there through, the apertures of the inner, middle and outer end support member are aligned to allow electrical connection through all apertures wherein each outer end support member is L shaped with a foot adapted 10 to allow for connect to an inside of the bag and fixing to the ends of the second heat conducting member.
- Claim 9: The heatable fluid filled bag as claimed in claim 8 wherein the housing includes at least one inner housing including at least one recess for the power connection means, the recess for the power connection means es a plug housing base d to slidably 15 interfit within the inner housing and being cylindrically shaped with a recess therein, a plug holder having cylindrical cap with a plug recess which is adapted to receive ical prongs followed by a plug prong holder fitting, followed by an access end cap able to the bag, the inner housing also has another recess for a safety switching means which includes a slide housing, switch, bar member with a magnet and an elongate member with a magnet joined at 20 one end to the inside of the bag and an other end operatively connected by power connection member means to a switch and power connection means by abutting magnets whereby the slide housing holds the bar member, switch and one end of the elongate member having the magnet and ion of the bag walls with the elongate member causes magnets to separate to cause the power connection means to the safety switch means to be non 25 electrically connected to the power source.
- Claim 10: The heatable fluid filled bag as claimed in claim 9 wherein the heat generating member is formed from polycyclohexylenedimethylene terephthalate (PCT), the first and second insulation layers are formed from plastics, and the first and second heat conducting layers are formed from a metal in the shape of a sleeve, wherein the inner end support 30 s and middle end support members are formed as plate cap shaped members with an inner side with a protruding recessed lip portion, the apertures being formed as protruding cylindrical members on the opposite side of the plate cap to that of the lip portion. G:\l94684NZB d SPEC 13Feb2014 EHB.DOC
- Claim 11: The heatable fluid filled bag as claimed in claim 10 wherein the first and second tion layers and housing can each be formed as at least double insulation layers, the bag includes an le or closable bag opening in the form of a bleed valve or plug in hole, to allow air or fluid to be inputted or emptied from the bag and the bag includes a thermostat electrically ed to the power connection means between the plug holder g and power connection recess, and the end cap can have an LED to show whether electrically connected or not.
- Claim 12: The heatable fluid filled bag as claimed in claim 11 wherein the bag includes the safety switching means includes a magnet located in the elongate member which is joined to 10 a magnet in the safety switching means.
- Claim 13: The heatable fluid filled bag as claimed in claim 12 wherein the fluid can include antifreeze to allow the bag to be cooled.
- Claim 14: The heatable fluid filled bag as claimed in claim 13 wherein the fluid can heated by the heater element to a temperature between -10° C to 100° C. PIPERS Attorneys for the Applicants AMATO, David John and ZHANG Huiquan G:\194684NZB Amended SPEC 014 EHB.DOC ””15 . 42_ EE ‘3
Publications (1)
Publication Number | Publication Date |
---|---|
NZ616766B true NZ616766B (en) | 2014-07-01 |
Family
ID=
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