EP1147341B1 - Systeme d'alimentation en particulier pour les poeles et les foyers ouverts - Google Patents

Systeme d'alimentation en particulier pour les poeles et les foyers ouverts Download PDF

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Publication number
EP1147341B1
EP1147341B1 EP00910597A EP00910597A EP1147341B1 EP 1147341 B1 EP1147341 B1 EP 1147341B1 EP 00910597 A EP00910597 A EP 00910597A EP 00910597 A EP00910597 A EP 00910597A EP 1147341 B1 EP1147341 B1 EP 1147341B1
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EP
European Patent Office
Prior art keywords
pair
log
rods
feeder according
cradle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00910597A
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German (de)
English (en)
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EP1147341A1 (fr
Inventor
Domenico Piazzetta
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Gruppo Piazzetta SpA
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Gruppo Piazzetta SpA
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Publication of EP1147341A1 publication Critical patent/EP1147341A1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/191—Component parts; Accessories
    • F24B1/199—Fuel-handling equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone

Definitions

  • the present invention relates to a feeder for stoves or fireplaces.
  • Stoves or fireplaces are usually constituted by a frame which is composed of a plurality of legs whose height can be adjusted and supports a combustion chamber which is usually open at the front and top and is connected to a hood for conveying the gases produced by the combustion of suitable wood which can be placed in the combustion chamber.
  • a drawback of these conventional fireplaces is substantially constituted by the fact that the user has to periodically check the amount of wood present in the combustion chamber, in order to prevent the fire from going out and in order to maintain always approximately at the same level the amount of heat obtained for example in order to heat a room.
  • a feeder according to the preamble of claim 1 is disclosed in US-A-4,865,016.
  • the aim of the present invention is to solve the above-mentioned problems, eliminating the drawbacks of the cited prior art, by providing a device which allows to use a stove or fireplace while maintaining over time, without any direct intervention on the part of the user, a chosen and preset thermal load and therefore a chosen radiation of heat for example into the surrounding room.
  • an important object of the present invention is to provide a device which allows to feed suitable logs into the combustion chamber automatically and without the intervention of the user.
  • Another important object of the present invention is to provide a device which allows to feed logs into the combustion chamber as soon as the heat that is present therein decreases below a preset threshold.
  • Another important object of the present invention is to provide a device which is structurally simple and can be applied to conventional stoves or fireplaces without substantially altering their front styling, which is the one that can be seen by the user.
  • Another important object of the present invention is to provide a device which also allows to check the number of logs available for feeding the combustion chamber.
  • Another object of the present invention is to provide a device which spares the user from having to directly feed the logs into the combustion chamber and is reliable and safe in use.
  • means are provided for activating the conveyance and unloading means according to the chosen amount of heat generated in the combustion chamber.
  • the reference numeral 1 designates a fireplace which is constituted by a frame which comprises a plurality of legs 2 whose height can optionally be adjusted and which support a structure which forms a combustion chamber 3.
  • the chamber 3 accordingly has a base 4, two side walls 5a and 5b, a rear wall 6 and a front opening 7.
  • the combustion chamber 3 is connected, in an upward region, to a hood 8 for conveying the flue gases to a suitable flue (not shown).
  • the feeder comprises a first input station for logs, advantageously of the type obtained by pressing material and therefore preferably of the type having uniform dimensions for example in terms of length and diameter.
  • the first input station designated by the reference numeral 10, is constituted by a box-like structure 11 which is arranged below the base 4 of the fireplace 1 and has a front opening 12 through which the logs can be introduced and arranged transversely to the fireplace.
  • the box-like structure 11 has a first inclined plane 13 which is suitable to convey the logs at a second station, generally designated by the reference numeral 14, for loading the logs onto a means for actually conveying and unloading them, designated by the reference numeral 15.
  • the second station is substantially constituted by a first cradle 16 for supporting a single log 9; the cradle is substantially C-shaped and its wings are freely pivoted, at their ends, at the wall of the box-like structure 11.
  • the first cradle 16 is forced to oscillate counterclockwise, so as to unload the individual log into an underlying region, by means of a first pair of rods 17 which are conveniently arc-shaped and are associated, at one end, with the wings of the first cradle and are pivoted, at the other end, at the end of a second pair of rods 18 which are arranged behind the rear wall 6 of the fireplace 1.
  • each one of the second pair of rods 18 is pivoted to a pair of fourth rods 50 which are in turn pivoted, at one end, to two first pivots 19 which can slide at a suitable first pair of guiding elements 20 which are substantially S-shaped; said first pair of guiding elements 20 is formed at a suitable pair of walls 21 which protrude behind the rear wall 6 of the fireplace 1.
  • Each one of the first pivots 19 is connected, by means of a bar 22 (see Figure 4), laterally to a door 23 which has, at its upper end, two second pivots 24 which can slide at a second pair of guiding elements 25 which are also formed at the walls 21 and have the same shape as the first pair of guiding elements.
  • the second pivots or the door are rotatably associated with a third pair of rods 26 which are eccentrically rigidly coupled, at their other end, at a Maltese cross, designated by the reference numeral 27, which preferably has three lobes, so that a rotation through 360° of the driving shaft 51 produces a rotation through 120° of the Maltese cross 27, which is rotationally rigidly coupled to a toothed pinion 52.
  • a radial crank 53 is rigidly coupled to the driving shaft 51, and the third pair of rods 26 is pivoted thereto.
  • the rotation of the crank must be counterclockwise; this entails the lifting of the third pair of rods 26 and therefore the lifting of the door 23 and of the second and third pairs of rods 18, which accordingly force the first cradle 16 to perform a clockwise rotation by means of the first pair of rods 17.
  • an opening 29 which allows the passage of a single log at a duct 30 which protrudes inside the combustion chamber 3 in a region above a suitable brazier 31; the end of the duct is temporarily concealed by a swiveling flap 32 which is freely and transversely pivoted in an upward region, so that when a single log 9 is placed inside the duct 30 the flap can partially turn counterclockwise and the log can fall into the underlying brazier 31.
  • the means for selectively conveying and unloading the logs 9 is further constituted by a plurality of second cradles 33 which are approximately identical to the first cradle 16 except for a lateral tab 34 which protrudes further from the base 35 in order to allow better containment of the log 9; the tab 34 is preferably present at the side that is not directed toward the rear wall 6 of the fireplace.
  • each one of the second cradles is in fact freely rotatably pivoted at a suitable traction element, such as a chain 36, which is guided at four guiding elements: a first guiding element 37a, arranged in the region below the box-like structure 11; a second guiding element 37b, also located in the region below the box-like structure 11 but adjacent to the base 4 of the fireplace; a third guiding element 37c, located behind the rear wall 6 and appropriately spaced therefrom; and a fourth guiding element 37d, arranged proximate to the ground where the legs 2 rest in a region adjacent to said second guiding element.
  • a suitable traction element such as a chain 36
  • a carousel is thus formed which allows to position the various second cradles 33 by passing below the second station 14 and in the region that faces the door 23.
  • the movement can be supplied to the chain 36 for example by means of a suitable belt or other chain 38 which is moved by means of the toothed pinion 52 which is coaxial to the Maltese cross 27.
  • the second cradle 33 located at the door 23 is allowed to tip by two levers 39 which are arranged in an intermediate region between the two vertical stacks of the second cradles located behind the fireplace and slightly above the region provided with the door 23; the two levers have, at their free end, a hook 40 which is suitable to engage at a suitable pair of holes 41 formed at one end of the tab 34 of each second cradle 33.
  • a guiding means constituted by a profiled element 42, which is substantially C-shaped and whose wings are rotatably pivoted, at their ends, at suitable third pivots 43 which are arranged in the intermediate region between the two vertical stacks of second cradles 33 and whose counterclockwise oscillation moves the connecting base 44 into the region below the second cradle engaged by the hook 40, producing a sliding surface for the log 9 which conveys the log into the duct 30.
  • the feeder further comprises a means which is suitable to prevent the unloading of a log 9 from the first cradle 16 if the underlying second cradle 33 already supports another log; said means is constituted by a partition 46 which oscillates so as to block the fall of the log 9 from the first cradle 16, as shown in Figure 2.
  • the feeder also has means for activating the chain 36, the toothed pinion 52 and therefore the Maltese cross 27, the two levers 39 and the partition 46; said means are, for example, constituted by proximity sensors or automatic controls which are dependent for example on a presettable value of the temperature inside the combustion chamber 3.
  • a sensor which detects the presence or absence of a log in the three second cradles that are adjacent to the two levers 39; the presence of logs therefore allows to activate the two levers 39 in order to allow to unload them, whereas any absence of the logs blocks the pair of levers 39, forcing the rotation of the chain 36 in order to load other logs 9 stored previously inside the box-like structure 11, or reporting to the user that it is necessary to reload all the second cradles 33.
  • the levers 39 can also be always activated for the rotation of the adjacent second cradle 33, even in the absence of a log; however, if a suitable sensor warns that the available logs are about to be used up, the levers 39 are deactivated so that loading in the second station 14 can occur.
  • the user loads the second cradles 33 by inserting the logs 9 at the front opening 12 of the box-like structure 11; at the same time, the toothed pinion 52 and therefore the Maltese cross 27 are activated, forcing the unloading of one log at a time at the underlying second cradles 33; this operation is repeated until a sensor indicates the presence of logs in all the second cradles 33.
  • a suitable sensor activates the two levers 39 when, for example, the temperature drops below a certain value; in this manner, the logs are unloaded in sequences of three logs, forcing the lifting of the third pair of rods 26 so as to entail the simultaneous lifting of the profiled element 42, whose connecting base 44 forms a surface for conveying the log into the duct 30.
  • the activation of the two levers 39 allows a single second cradle 33 to tip, transferring the log 9 into the brazier 31 through the swiveling flap 32.
  • the invention achieves the intended aim and objects, a feeder having been provided which allows to use a fireplace so as to maintain, without any direct intervention by the user, a chosen and preset thermal load and therefore a chosen heat radiation into the surrounding space or into other spaces through suitable and known heat conveyance devices.
  • the feeder also allows to introduce suitable logs automatically into the combustion chamber as soon as the heat that is present therein drops below a preset threshold, which can be detected by suitable conventional sensors.
  • the feeder is furthermore simple and can be applied to conventional stoves or fireplaces without substantially altering their front styling, which is the one that is visible to the user; finally, the feeder also allows to check the number of logs available for feeding the combustion chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electric Stoves And Ranges (AREA)
  • Solid-Fuel Combustion (AREA)
  • Resistance Heating (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Incineration Of Waste (AREA)
  • Coke Industry (AREA)
  • Glass Compositions (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)

Claims (16)

  1. Alimentateur, en particulier pour fourneaux et cheminées, comprenant un cadre support pour une chambre de combustion (3) et une hotte de transfert des fumées (8), un premier poste d'introduction des bûches (10) constitué d'une structure en caisson (11) qui est disposée sous une base (4) de la chambre de combustion (3) et a une ouverture frontale (12) à travers laquelle lesdites bûches peuvent être introduites de façon à reposer en travers de la cheminée, et un deuxième poste (14) pour charger les bûches sur un moyen 15 pour transporter et décharger sélectivement des bûches dans ladite chambre de combustion (3) et qui est constitué d'un premier berceau (16) destiné à supporter une bûche unique (9), ledit berceau (16) étant essentiellement en forme de C et ayant des ailes qui pivotent librement, à leur extrémité, au niveau de la paroi de ladite structure en caisson (11), caractérisé en ce que :
    ledit premier berceau (16) est forcé d'osciller dans le sens antihoraire de façon à décharger ladite bûche individuelle (9) dans une région sous jacente, au moyen d'une première paire de tiges (17) qui sont arquées et sont associées, à une extrémité, aux ailes dudit premier berceau et pivotent, à leur autre extrémité, vers l'extrémité d'une deuxième paire de tiges (18) disposées derrière une paroi arrière (6) de ladite cheminée (1) ;
    à l'autre extrémité, chaque tige de ladite deuxième paire de tiges (18) pivote vers une paire de quatrièmes tiges (50) qui, à leur tour, pivotent, à une extrémité, vers deux premiers pivots (19) qui peuvent coulisser au niveau d'une première paire d'éléments de guidage (20) en forme de S, ladite première paire d'éléments de guidage (20) étant formée au niveau d'une paire de parois (21) qui font saillie derrière ladite paroi arrière (6) de ladite cheminée (1) ;
    chacun desdits premiers pivots (19) est raccordé, au moyen d'une barre (22), latéralement à une porte (23) qui a, à son extrémité supérieure, deux deuxièmes pivots (24) qui peuvent coulisser au niveau d'une deuxième paire d'éléments de guidage (25) qui sont également formés au niveau de ladite paire de parois (21) qui font saillie derrière ladite paroi arrière de ladite cheminée et ont la même forme que ladite première paire d'éléments de guidage ;
    lesdits deuxièmes pivots ou ladite porte sont associés en rotation avec une extrémité d'une troisième paire de tiges (26) qui sont couplées de façon rigide, à leur autre extrémité, de façon excentrée au niveau d'un système de manivelle (27) de sorte qu'une rotation de 360° d'un arbre d'entraínement (51) produit une rotation de 120° dudit système de manivelle (27), qui tourne à son tour de façon rigide avec une roue dentée (52), une manivelle radiale (53) étant couplée de façon rigide audit arbre d'entraínement (51), ladite troisième paire de tiges (26) pivotant vers ladite manivelle (53) et pouvant tourner dans le sens antihoraire de façon à soulever ladite troisième paire de tiges (26) et par conséquent soulever ladite porte (23) et lesdites deuxième et troisième paires de tiges (18).
  2. Alimentateur selon la revendication 1, caractérisé en ce qu'il comprend des moyens pour activer lesdits moyens de transfert et de déchargement sélectifs desdites bûches (9) dans ladite chambre de combustion (3) selon une température choisie et préréglable à l'intérieur de ladite chambre de combustion (3).
  3. Alimentateur selon la revendication 2, caractérisé en ce que ladite structure en caisson (11) a un premier plan incliné (13) qui est adapté pour convoyer lesdites bûches (9) au niveau dudit deuxième poste (14) pour les charger sur lesdits moyens (15) pour transporter et décharger sélectivement les bûches.
  4. Alimentateur selon la revendication 1, caractérisé en ce que la rotation dans le sens antihoraire dudit système de manivelle (27) provoque le soulèvement de ladite troisième paire de tiges (26) et par conséquent le soulèvement de ladite porte (23) et le soulèvement de ladite deuxième paire de tiges (18), ce qui force une rotation dans le sens horaire dudit premier berceau (16) au moyen de ladite première paire de tiges (17).
  5. Alimentateur selon la revendication 1, caractérisé en ce qu'une ouverture est formée au niveau de ladite porte dans ladite paroi arrière (6) de ladite cheminée (1) et est adaptée pour permettre le passage d'une bûche individuelle (9) au niveau d'une gaine (30) qui fait saillie à l'intérieur de ladite chambre de combustion (3) dans une région qui est située au-dessus d'un brasero (31), l'extrémité de ladite gaine (30) étant provisoirement masquée par un volet (32) pivotant qui pivote librement dans le sens transversal et dans une région ascendante, de sorte que quand une bûche unique (9) est placée à l'intérieur de ladite gaine (30), ledit volet (32) peut partiellement se retourner dans une direction antihoraire et la bûche (9) peut tomber dans ledit brasero (31) sous-jacent.
  6. Alimentateur selon la revendication 1, caractérisé en ce que lesdits moyens pour transporter et décharger sélectivement lesdites bûches est en outre constitué d'une pluralité de deuxièmes berceaux (33) qui ont une section transversale essentiellement en forme de C, une patte latérale 34 faisant saillie transversalement à une base (35) des deuxièmes berceaux (33) afin de permettre une meilleure retenue de ladite bûche (9).
  7. Alimentateur selon la revendication 6, caractérisé en ce que les extrémités des ailes de chacun desdits deuxièmes berceaux (33) peuvent pivoter en rotation librement au niveau d'un élément de traction (36) qui est guidé au niveau de quatre éléments de guidage : un premier élément de guidage (37a), qui est situé dans la région sous ladite structure en caisson ; un deuxième élément de guidage (37b), qui est situé dans la région sous ladite structure en caisson (11) et de façon adjacente à une base (4) de ladite cheminée ; un troisième élément de guidage (37c), qui est situé derrière une paroi arrière (6) de ladite cheminée et à distance de celle-ci ; et un quatrième élément de guidage (37d) qui est situé à proximité du sol où des pieds (2) de ladite cheminée reposent dans une région adjacente audit deuxième élément de guidage (37b).
  8. Alimentateur selon la revendication 7, caractérisé en ce qu'il y a un carrousel qui permet de placer lesdits deuxièmes berceaux (33) de façon à ce qu'ils passent sous ledit deuxième poste (14) et dans la région qui fait face à ladite porte (23), ledit élément de traction (36) étant actionné au moyen d'une courroie (38) qui est déplacée par ladite roue dentée (52) qui est coaxiale audit système de manivelle (27).
  9. Alimentateur selon la revendication 6, caractérisé en ce qu'il comprend deux leviers (39) qui sont disposés dans une région qui est intermédiaire entre deux tuyaux de cheminée verticaux, situés derrière ladite cheminée, qui sont formés par lesdits deuxièmes berceaux (33), lesdits deux leviers (39) étant disposés au-dessus de la région munie de ladite porte (23) et étant adaptés pour permettre le basculement dudit deuxième berceau (33) qui est situé, dans son trajet de type carrousel, au niveau de ladite porte (23).
  10. Alimentateur selon la revendication 9, caractérisé en ce que lesdits deux leviers (39) ont, au niveau de leur extrémité libre, un crochet (40) qui est adapté pour entrer en prise au niveau d'une paire de trous (41) formée à une extrémité de ladite patte de chacun desdits deuxièmes berceaux (33).
  11. Alimentateur selon la revendication 10, caractérisé en ce qu'il comprend un moyen de guidage qui est adapté pour faciliter la chute de ladite bûche (9) individuelle, ledit moyen étant constitué d'un élément (42) profilé en forme de C dont les angles pivotent en rotation, à leurs extrémités, au niveau de troisièmes pivots (43) qui sont disposés dans la région entre lesdits deux tuyaux de cheminée verticaux desdits deuxièmes berceaux (33) et dont l'oscillation dans le sens antihoraire place la base de raccordement (44) dans la région sous ledit deuxième berceau (33) engagé par ledit crochet (40), formant une surface coulissante pour ladite bûche (9) individuelle qui transporte ladite bûche dans ladite gaine (30).
  12. Alimentateur selon la revendication 11, caractérisé en ce que ledit élément (42) profilé est directement actionné de façon à osciller du fait du soulèvement de ladite deuxième paire de tiges (18) en y étant articulé dessus au moyen de quatrièmes pivots (45).
  13. Alimentateur selon la revendication 6, caractérisé en ce qu'il comprend un moyen qui permet d'empêcher le déchargement d'une bûche (9) depuis ledit premier berceau (16) si le deuxième berceau (33) sous-jacent supporte déjà une autre bûche, ledit moyen étant constitué d'une séparation (46) qui oscille de façon à bloquer la chute de ladite bûche depuis ledit premier berceau (16).
  14. Alimentateur selon la revendication 13, caractérisé en ce qu'il comprend des moyens qui sont appropriés pour activer ledit élément de traction (36), ledit système de manivelle (27), ladite paire de leviers (39) et ladite séparation (46), lesdits moyens étant constitués de détecteurs de proximité ou de commandes automatiques qui sont liés à une valeur préréglable de la température à l'intérieur de ladite chambre de combustion (3).
  15. Alimentateur selon la revendication 9, caractérisé en ce qu'il comprend un détecteur qui est approprié pour détecter la présence ou l'absence d'une bûche dans les deuxièmes berceaux qui sont adjacents à ladite paire de leviers (39).
  16. Alimentateur selon la revendication 15, caractérisé en ce qu'il comprend des moyens pour activer la rotation de ladite paire de leviers (39) quand il est nécessaire de les retourner afin de transporter ladite bûche dans ledit brasero (31).
EP00910597A 1999-01-26 2000-01-20 Systeme d'alimentation en particulier pour les poeles et les foyers ouverts Expired - Lifetime EP1147341B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTV990010 1999-01-26
IT1999TV000010A IT1311814B1 (it) 1999-01-26 1999-01-26 Dispositivo di alimentazione,particolarmente per stufe o caminetti.
PCT/EP2000/000431 WO2000045092A1 (fr) 1999-01-26 2000-01-20 Systeme d'alimentation en particulier pour les poeles et les foyers ouverts

Publications (2)

Publication Number Publication Date
EP1147341A1 EP1147341A1 (fr) 2001-10-24
EP1147341B1 true EP1147341B1 (fr) 2004-10-27

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ID=11420541

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EP00910597A Expired - Lifetime EP1147341B1 (fr) 1999-01-26 2000-01-20 Systeme d'alimentation en particulier pour les poeles et les foyers ouverts

Country Status (6)

Country Link
EP (1) EP1147341B1 (fr)
AT (1) ATE280929T1 (fr)
AU (1) AU3276000A (fr)
DE (1) DE60015292D1 (fr)
IT (1) IT1311814B1 (fr)
WO (1) WO2000045092A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT506321B1 (de) * 2008-03-25 2009-08-15 Guetl Karl Ing Vorratsbehälter für feste brennstoffe mit druckelement
IT1399708B1 (it) * 2010-04-26 2013-04-26 Nordica Spa Apparecchio riscaldante a combustibile solido con alimentazione automatica ad elevata sicurezza
IT1404290B1 (it) * 2011-02-18 2013-11-15 Nordica Spa Apparecchio riscaldante ad alimentazione automatica di combustibile solido, in particolare tronchetti di legna
FR3036464B1 (fr) * 2015-05-18 2019-12-13 Jean Luc Bouvier Tremie de distribution automatique de buches de bois compactees cylindriques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571125A1 (fr) * 1984-10-02 1986-04-04 Agarra Henri Chaudiere a chargement automatique pour chauffage domestique et industriel
US4865016A (en) * 1988-09-27 1989-09-12 Landry Joseph L Automatic log feeder for fireplaces
US5462046A (en) * 1994-04-22 1995-10-31 Hannah; Jacquilyn K. Fireplace log dispensing apparatus

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Publication number Publication date
WO2000045092A1 (fr) 2000-08-03
ATE280929T1 (de) 2004-11-15
DE60015292D1 (de) 2004-12-02
AU3276000A (en) 2000-08-18
IT1311814B1 (it) 2002-03-19
ITTV990010A1 (it) 2000-07-26
EP1147341A1 (fr) 2001-10-24

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