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(12) Demande de brevet: (11) CA 2849460
(54) Titre français: DISPOSITIF D'ADMISSION D'AIR SECONDAIRE VARIABLE
(54) Titre anglais: VARIABLE SECONDARY AIR INTAKE DEVICE
(51) Classification internationale des brevets (CIB):
  • F24B 1/189 (2006.01)
  • F23L 9/04 (2006.01)
  • F23L 13/00 (2006.01)
  • F24B 5/02 (2006.01)
(72) Inventeurs :
  • MARCAKIS, EMMANUEL (Canada)
(73) Titulaires :
  • MARCAKIS, EMMANUEL (Non disponible)
(71) Demandeurs :
  • MARCAKIS, EMMANUEL (Canada)
(74) Agent:
(74) Co-agent:
(45) Délivré:
(22) Date de dépôt: 2014-04-22
(41) Mise à la disponibilité du public: 2014-10-24
Requête d’examen: 2019-01-07
(30) Licence disponible: S.O.
(30) Langue des documents déposés: Anglais

(30) Données de priorité de la demande:
Numéro de la demande Pays / territoire Date
1307428.1 Royaume-Uni 2013-04-24

Abrégé anglais





An variable secondary air intake device has a baffle member adapted to be
attached within an
upper area of a fire chamber of the firebox. The baffle member includes a top
having a
channel member hole therethrough, side walls, a bottom having a plurality of
small holes
therethrough, and a gas exit opening having side walls and extending through
the top and
bottom. A hollow chamber member adapted to be placed upon a top surface of the
baffle
member, the hollow chamber member includes a top having a channel member hole
therethrough, and side walls extending downward from the top and forming a
chamber having
a periphery that includes a plurality of gas exit holes therethrough.


Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.




11
CLAIMS
1.) A variable secondary air intake device for use with a firebox, said
variable secondary air intake device comprising of a baffle member
adapted to be attached within an upper area of a fire chamber of said
firebox, said baffle member including a top having a channel member
hole therethrough, side walls, a bottom having a plurality of small
holes therethrough, and a gas exit opening having side walls and
extending through said top and bottom; a hollow chamber member
adapted to be placed upon a top surface of said baffle member, said
hollow chamber member including a top having a channel member
hole therethrough, and side walls extending downward from said top
and forming a chamber having a periphery that includes a plurality of
gas exit holes therethrough; an elongated hollow channel member
adapted to be placed within and through said holes of said baffle
member top, said hollow chamber member top, and a hole within a top
member of said firebox, to thereby allow secondary air to pass
therethrough and into said baffle member, and an adjustable gate
adapted to be attached upon a top end portion of said channel
member, said adjustable gate including a base portion having an
opening therethrough adapted to allow said secondary air to pass
therethrough and into said channel member, a movable cover member
pivotally attached to said base portion and adapted to adjustably cover
said opening, and a bimetal element attached to said base portion and
adapted to push against and move said cover member in either of two
pivoting directions depending on the temperature of said bimetal
element, wherein said adjustable secondary air intake device is
adapted such that when a fire rises above a predetermined
temperature within said firebox chamber, said bimetal element begins
to bend and push and pivot said cover member and thereby gradually
open said opening and allow an increasing amount of secondary air to

12

pass therethrough and into said baffle member to thereby pass
through said plurality of small holes in said bottom thereof and into
said fire chamber of said firebox as a secondary air supply to thereby
increase the burning rate of the material being burned therein, and
wherein flammable gases from said material being burned are adapted
to rise and pass through said gas exit opening of said baffle member
and into the hollow chamber of said hollow chamber member where
they are slowed down and spread to thereby allow for their complete
combustion before escaping through its gas exit holes and then out
through an exhaust hole within a top member of said firebox and
discharged through an exhaust pipe therefrom.
2.) The variable device of claim 1, wherein said bimetal element
comprises two differing elongated flat metallic members connected to
one another along adjacent surfaces.
3.) The variable device of claim 2, wherein said cover member of said
adjustable gate is formed as an elongated rectangular channel having
two sides extending perpendicular to a base portion, wherein said
bimetal element resides within said channel, is parallel to said two
sides, and is adapted to push against either side of said channel
depending on the temperature of said fire chamber, such that when
the temperature of said fire chamber is increasing, said cover member
is gradually pushed and pivoted to an open position to allow more
secondary air therethrough, and when the temperature of said fire
chamber is decreasing, said cover member is gradually pushed and
pivoted to a closed position to decrease and eventually cut off the
amount of secondary air passing therethrough.
4.) The variable device of claim 1, wherein said hollow chamber forms
an interior shape having a rectangular volume.

13

5.) The variable device of claim 1, wherein said baffle member is
formed in the shape of a rectangular volume, said gas exit opening is
formed in the shape of a rectangular volume, and said small holes
being arranged into a series of concentric circles.
6.) The variable device of claim 1, wherein said channel member hole
of said baffle member, said channel member hole of said hollow
chamber member, and said channel member are formed having a
similar rectangular cross section, and are aligned such that said
channel member can pass snugly therethrough.
7.) A combination of a firebox and a variable secondary air intake
device,
said firebox including a fire chamber forming an interior rectangular
volume; and a top member including a channel member hole
therethrough, and an exhaust vent hole therethrough; and
said adjustable secondary air intake device comprising of a baffle
member adapted to be attached within an upper area of said fire
chamber of said firebox, said baffle member including a top having a
channel member hole therethrough, side walls, a bottom having a
plurality of small holes therethrough, and a gas exit opening having
side walls and extending through said top and bottom; a hollow
chamber member adapted to be placed upon a top surface of said
baffle member, said hollow chamber member including a top having a
channel member hole therethrough, and side walls extending
downward from said top and forming a chamber having a periphery
that includes a plurality of gas exit holes therethrough; an elongated
hollow channel member adapted to be placed within and through said
holes of said baffle member top, said hollow chamber member top,
and a hole within a top member of said firebox, to thereby allow

14

secondary air to pass therethrough and into said baffle member, and
an adjustable gate adapted to be attached upon a top surface of said
top member of said firebox and to a top end portion of said channel
member, said adjustable gate including a base portion having an
opening therethrough adapted to allow said secondary air to pass
therethrough and into said channel member, a movable cover member
pivotally attached to said base portion and adapted to adjustably cover
said opening, and a bimetal element attached to said base portion and
adapted to push against and move said cover member in either of two
pivoting directions depending on the temperature of said bimetal
element, wherein said adjustable secondary air intake device is
adapted such that when a fire rises above a predetermined
temperature within said firebox chamber, said bimetal element begins
to bend and push and pivot said cover member and thereby gradually
open said opening and allow an increasing amount of secondary air to
pass therethrough and into said baffle member to thereby pass
through said plurality of small holes in said bottom thereof and into
said fire chamber of said firebox as a secondary air supply to thereby
increase the burning rate of the material being burned therein, and
wherein flammable gases from said material being burned are adapted
to rise and pass through said gas exit opening of said baffle member
and into the hollow chamber of said hollow chamber member where
they are slowed down and spread to thereby allow for their complete
combustion before escaping through its gas exit holes and then out
through said exhaust hole of said top member of said firebox and
discharged through an exhaust pipe therefrom.
8.) The adjustable device of claim 7, wherein said bimetal element
comprises two differing elongated flat metallic members connected to
one another along adjacent surfaces.

15

9.) The adjustable device of claim 8, wherein said cover member of
said adjustable gate is formed as an elongated rectangular channel
having two sides extending perpendicular to a base portion, wherein
said bimetal element resides within said channel, is parallel to said two
sides, and is adapted to push against either side of said channel
depending on the temperature of said fire chamber, such that when
the temperature of said fire chamber is increasing, said cover member
is gradually pushed and pivoted to an open position to allow more
secondary air therethrough, and when the temperature of said fire
chamber is decreasing, said cover member is gradually pushed and
pivoted to a closed position to decrease and eventually cut off the
amount of secondary air passing therethrough.
10.) The adjustable device of claim 7, wherein said hollow chamber
forms an interior shape having a rectangular volume.
11.) The adjustable device of claim 7, wherein said baffle member is
formed in the shape of a rectangular volume, said gas exit opening is
formed in the shape of a rectangular volume, and said small holes
being arranged into a series of concentric circles.
12.) The adjustable device of claim 7, wherein said channel member
hole of said top member of said firebox, said channel member hole of
said baffle member, said channel member hole of said hollow chamber
member, and said channel member are formed having a similar
rectangular cross section, and are aligned such that said channel
member can pass snugly therethrough.

Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.

CA 02849460 2014-04-22
1
Variable secondary air intake device
FIELD OF THE INVENTION
[001] The present invention relates generally to solid fuel burning appliances
but more particularly to an variable secondary air intake device.
BACKGROUND OF THE INVENTION
[002] Solid fuel burning appliances have two sources of air. A primary source
and a secondary source. The primary source controls the burn rate and
is arranged in such a way that the air is in contact with the wood and
helps the wood to burn as a solid. It is adjustable by the user.
[003] The secondary source is not in direct contact with the wood. It is
directed into the firebox, usually from the top part, just below the baffle.
It helps to burn the combustible gases before escaping to the chimney.
If those gases are not burned properly, they are a source of pollution but
also are wasted as a potential source of additional heat energy.
[004] Currently, in wood burning appliances, the secondary air is constant and

cannot be adjusted. The amount of secondary air required for proper
combustion varies with the amount of gas released in relation to the
temperature of the firebox, and as such, ideally, a variable amount of
secondary source air is best.

1
CA 02849460 2014-04-22
2
SUMMARY OF THE INVENTION
[005] In view of the foregoing disadvantages inherent in the known devices
now present in the prior art, the present invention, which will be
described subsequently in greater detail, is to provide objects and
advantages which are:
[006] To provide for a secondary source of air that is variable, which
increases
the efficiency of the appliance and maximizes its burn time.
[007] In order to do so, the invention comprises a baffle member adapted to
be attached within an upper area of a fire chamber of the firebox. The baffle
member includes a top having a channel member hole therethrough, side
walls, a bottom having a plurality of small holes therethrough, and a gas exit

opening having side walls and extending through the top and bottom.
[008] A hollow chamber member adapted to be placed upon a top surface of
the baffle member, the hollow chamber member includes a top having a
channel member hole therethrough, and side walls extending downward from
the top and forming a chamber having a periphery that includes a plurality of
gas exit holes therethrough.
[009] An elongated hollow channel member adapted to be placed within and
through the holes of the baffle member top, the hollow chamber member top,
,

1
CA 02849460 2014-04-22
3
and a hole within a top member of the firebox, to thereby allow secondary air
to
pass therethrough and into the baffle member, and an adjustable gate adapted
to be attached upon a top end portion of the channel member, the adjustable
gate including a base portion having an opening therethrough adapted to allow
the secondary air to pass therethrough and into the channel member.
[0010] The bimetal element begins to bend and push and pivot the cover
member and thereby gradually open the opening and allow an increasing
amount of secondary air to pass therethrough and into the baffle member to
thereby pass through the plurality of small holes in the bottom thereof and
into
the fire chamber of the firebox as a secondary air supply to thereby increase
the burning rate of the material being burned therein, and wherein flammable
gases from the material being burned are adapted to rise and pass through the
gas exit opening of the baffle member and into the hollow chamber of the
hollow chamber member where they are slowed down and spread to thereby
allow for their complete combustion before escaping through its gas exit holes
and then out through an exhaust hole within a top member of the firebox and
discharged through an exhaust pipe therefrom.
[0011] The bimetal element comprises two differing elongated flat metallic
members connected to one another along adjacent surfaces.
[0012] The cover member of the adjustable gate is formed as an elongated
rectangular channel having two sides extending perpendicular to a base
,

1
CA 02849460 2014-04-22
4
portion, wherein the bimetal element resides within the channel, is parallel
to
the two sides, and is adapted to push against either side of the channel
depending on the temperature of the fire chamber, such that when the
temperature of the fire chamber is increasing, the cover member is gradually
pushed and pivoted to an open position to allow more secondary air
therethrough, and when the temperature of the fire chamber is decreasing, the
cover member is gradually pushed and pivoted to a closed position to decrease
and eventually cut off the amount of secondary air passing therethrough.
[0013] In a preferred embodiment, the hollow chamber forms an interior shape
having a rectangular volume.
[0014] The baffle member is formed in the shape of a rectangular volume, the
gas exit opening is formed in the shape of a rectangular volume, and the small

holes being arranged into a series of concentric circles.
[0015] The channel member hole of the baffle member, the channel member
hole of the hollow chamber member, and the channel member are formed
having a similar rectangular cross section, and are aligned such that the
channel member can pass snugly therethrough.
[0016] The variable secondary air intake device works in combination with a
i

CA 02849460 2014-04-22
firebox.
[0017] There has thus been outlined, rather broadly, the more important
features of the invention in order that the detailed description thereof
that follows may be better understood, and in order that the present
5 contribution to the art may be better appreciated. There are additional
features of the invention that will be described hereinafter and which will
form the subject matter of the claims appended hereto.
[0018] In this respect, before explaining at least one embodiment of the
invention in detail, it is to be understood that the invention is not limited
in its application to the details of construction and to the arrangements
of the components set forth in the following description or illustrated in
the drawings. The invention is capable of other embodiments and of
being practiced and carried out in various ways. Also, it is to be
understood that the phraseology and terminology employed herein are
for the purpose of description and should not be regarded as limiting.
[0019] As such, those skilled in the art will appreciate that the conception,
upon
which this disclosure is based, may readily be utilized as a basis for the
designing of other structures, methods and systems for carrying out the
several purposes of the present invention. It is important, therefore, that
the claims be regarded as including such equivalent constructions
insofar as they do not depart from the spirit and scope of the present

CA 02849460 2014-04-22
6
invention.
[0020] These together with other objects of the invention, along with the
various
features of novelty which characterize the invention, are pointed out with
particularity in the claims annexed to and forming a part of this
disclosure. For a better understanding of the invention, its operating
advantages and the specific objects attained by its uses, reference
should be made to the accompanying drawings and descriptive matter
which contains illustrated preferred embodiments of the invention.
15
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Fig. 1 Isometric view of the invention in context.
[0022] Fig. 2 Isometric view of the gate and opening.
[0023] Fig. 3 Exploded view of the invention.
[0024] Fig. 4a-d Isometric, front, side cutaway, and top view, respectively,
of
the baffle.

CA 02849460 2014-04-22
7
[0025] Fig. 5 Side and front cutaway view respectively, of the hollow chamber.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0026] A variable secondary air intake device (10) is comprised of an
adjustable
gate (12) covering an opening (20), a channel member (22), and a baffle
member (26).
[0027] The gate (12) varies the amount of secondary air entering a fire
chamber (14) by way of the channel member (22). The gate (12) is comprised
of a cover member (13), and a base portion (15). The gate (12) is controlled
by
a bimetal element (16) which pushes the gate (12) open as the increasing
amount of heat bends the bimetal into pushing the gate (12) open or closing it
as the amount of heat decreases.
[0028] The top part of a firebox (18) has the secondary air entering from the
opening (20), through the channel member (22), and into the baffle member
(26) where the secondary air is preheated before entering the fire chamber
(14)
through a plurality of small holes (28).
[0029] When the fire is started, only primary air enters the fire chamber
(14). At
this stage there is no need for secondary air since the mass of wood is
cold and there aren't any flammable gases released. As the burning
progresses, the temperature rises and flammable gases are released,

I
CA 02849460 2014-04-22
8
the bimetal element (16) starts opening the adjustable gate (12)
gradually, allowing secondary air to enter the fire chamber (14), as
described hereinabove, and complete the combustion.
[0030] The products of combustion (gases) enter a hollow chamber member
(24), located just above the baffle member (26), through a gas exit
opening (30). In this hollow chamber (24), the gases are slowed down
and spread to allow for a complete combustion before the gases escape
through gas exit holes (32) located on the periphery of the hollow
chamber member (24). The exit holes (32) connect with a chimney (not
shown) as is known in the art.
[0031] As to a further discussion of the manner of usage and operation of the
present invention, the same should be apparent from the above
description. Accordingly, no further discussion relating to the manner of
usage and operation will be provided.
[0032] With respect to the above description then, it is to be realized that
the
optimum dimensional relationships for the parts of the invention, to
include variations in size, materials, shape, form, function and manner of
operation, assembly and use, are deemed readily apparent and obvious
to one skilled in the art, and all equivalent relationships to those
illustrated in the drawings and described in the specification are
intended to be encompassed by the present invention.
,

1
CA 02849460 2014-04-22
9
[0033] Therefore, the foregoing is considered as illustrative only of the
principles of the invention. Further, since numerous modifications and
changes will readily occur to those skilled in the art, it is not desired to
limit the invention to the exact construction and operation shown and
described, and accordingly, all suitable modifications and equivalents
may be resorted to, falling within the scope of the invention.
15
i

Une figure unique qui représente un dessin illustrant l’invention.

Pour une meilleure compréhension de l’état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , États administratifs , Taxes périodiques et Historique des paiements devraient être consultées.

États admin

Titre Date
Date de délivrance prévu Non disponible
(22) Dépôt 2014-04-22
(41) Mise à la disponibilité du public 2014-10-24
Requête d'examen 2019-01-07

Historique d'abandonnement

Il n'y a pas d'historique d'abandonnement

Taxes périodiques

Description Date Montant
Dernier paiement 2020-02-04 100,00 $
Prochain paiement si taxe applicable aux petites entités 2021-04-22 100,00 $
Prochain paiement si taxe générale 2021-04-22 200,00 $

Avis : Si le paiement en totalité n’a pas été reçu au plus tard à la date indiquée, une taxe supplémentaire peut être imposée, soit une des taxes suivantes :

  • taxe de rétablissement prévue à l’article 7 de l’annexe II des Règles sur les brevets ;
  • taxe pour paiement en souffrance prévue à l’article 22.1 de l’annexe II des Règles sur les brevets ; ou
  • surtaxe pour paiement en souffrance prévue aux articles 31 et 32 de l’annexe II des Règles sur les brevets.

Historique des paiements

Type de taxes Anniversaire Échéance Montant payé Date payée
Dépôt 200,00 $ 2014-04-22
Taxe de maintien en état - Demande - nouvelle loi 2 2016-04-22 50,00 $ 2016-01-14
Taxe de maintien en état - Demande - nouvelle loi 3 2017-04-24 50,00 $ 2017-02-02
Taxe de maintien en état - Demande - nouvelle loi 4 2018-04-23 50,00 $ 2018-03-06
Requête d'examen 400,00 $ 2019-01-07
Taxe de maintien en état - Demande - nouvelle loi 5 2019-04-23 100,00 $ 2019-01-25
Taxe de maintien en état - Demande - nouvelle loi 6 2020-04-22 100,00 $ 2020-02-04
Les titulaires actuels au dossier sont affichés en ordre alphabétique.
Titulaires actuels au dossier
MARCAKIS, EMMANUEL
Les titulaires antérieures au dossier sont affichés en ordre alphabétique.
Titulaires antérieures au dossier
S.O.
Les propriétaires antérieurs qui ne figurent pas dans la liste des « Propriétaires au dossier » apparaîtront dans d'autres documents au dossier.

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Filtre Télécharger sélection en format PDF (archive Zip)
Description du
Document
Date
(yyyy-mm-dd)
Nombre de pages Taille de l’image (Ko)
Abrégé 2014-04-22 1 17
Description 2014-04-22 9 239
Revendications 2014-04-22 5 202
Dessins 2014-04-22 5 254
Dessins représentatifs 2014-10-03 1 27
Page couverture 2014-11-03 2 63
Cession 2014-04-22 4 73
Correspondance 2016-01-07 1 22
Taxes 2016-01-14 1 31
Taxes 2017-02-02 1 23
Taxes 2018-03-06 1 27
Poursuite-Amendment 2019-01-07 1 26
Poursuite-Amendment 2019-01-17 19 482
Taxes 2019-01-25 1 28
Description 2019-01-17 9 231
Taxes 2020-02-04 3 52