Special Features Patents (Class 126/152B)
  • Patent number: 6158426
    Abstract: A water circulated grill with spaced apart food supporting tubes and with a water catching system including spaced apart collection troughs to receive condensed water dropping from the sides of the water cooled supporting tubes and heat supply source positioned beneath the collection troughs to supply heat upwardly between the water collection troughs to cook food placed on the food supporting tubes and to heat the collection troughs and vaporize water collected therein.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: December 12, 2000
    Inventor: Lawrence Wardell
  • Patent number: 6155184
    Abstract: A process wherein primary air supplied to the combustion bed through the thrust combustion grate is deflected after exiting from a surface of the thrust combustion grate by deflector elements mounted on the surface of the thrust combustion grate. The grate required for this purpose has grate plates made from a permeable hollow element with connection pieces for supplying and draining cooling water, with primary air supply ducts that run through the grate plate from a bottom to a top. Deflector elements against which the primary air exiting the outlet is intended to impact, are disposed over openings of the primary air supply ducts.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: December 5, 2000
    Assignee: Doikos Investments Limited
    Inventor: Jakob Stiefel
  • Patent number: 6155249
    Abstract: The present invention entails a gas log set including a generally triangular shaped pan having front and rear portions and a pair of sides that extend generally rearwardly and inwardly from the front portion. Each side of the triangular shaped pan includes a cantilevered log support structure projecting outwardly therefrom for receiving and holding artificial logs. In addition, other artificial logs provided with the set are supported such that they extend into the pan itself.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: December 5, 2000
    Inventor: Willis H. Gregory
  • Patent number: 6102032
    Abstract: A fire log arrangement for use in conjunction with a combustible fuel source and influences complete combustion of the combustible fuel. The fire log arrangement includes a first log and a second log. The first log and the second log define an interior face. The second log is spaced apart from the first log such that a fuel space is defined therebetween. The fuel space receives the combustible fuel therein and defines a fire chamber at a lower end thereof. The first log interior face and the second log interior face cooperate to induce the combustible fuel to fall inward between the first log and the second log thereby inducing a thorough combustion of the combustible fuel.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: August 15, 2000
    Inventors: David A. Sebby, Eunice J. Sebby
  • Patent number: 6055978
    Abstract: A log retainer has a two or more mounting brackets connected together by a cross bar. Each mounting bracket has a lower and upper mounting arm which is used to connect the retainer to the grate without adapting the grate. Each of the lower mounting arms has fingers extending therefrom, and each of the upper mounting arms has a thumb extending therefrom, the fingers and thumb engaging members of the grate to support the mounting brackets and cross bar above the grate to retain the logs in the grate.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: May 2, 2000
    Inventor: Charles D. Ellis
  • Patent number: 6024031
    Abstract: A thrust combustion grate for burning refuse having altemately stationary (5) and movable (6) hollow grate plates (5,6) in a stairway formation, that rest on each other with their front underedge. The grate plates extend across the entire width of the grateway. The movable grate plates (6) are each driven by a hydraulic cylinder-piston unit (18,19). To the sides, the grateway is limited by panels of water-cooled conduits (8,9), which, in the longitudinal direction, each consist of at least two sections sealingly flanged together. The panels are rigidly screwed to each other by a plurality of horizontally disposed distancing bars (3,4) running perpendicular thereto. Running between the panels are two additional conduits (10,11) flanged together in the same way, for feeding primary air and cooling water, which are fixed to certain individual distancing bars (3,4).
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: February 15, 2000
    Assignee: Doikos Investments Limited
    Inventor: Jakob Stiefel
  • Patent number: 5992334
    Abstract: A loose-material grate includes a grate surface for receiving loose material and a chamber arrangement below the grate surface supplies the grate surface with a gas, for example cooling air. A lattice arrangement with adjustable openings is provided spaced from the grate surface. The adjustable openings communicate with grate surface openings of the associated grate surface. The lattice arrangement preferably is divided into several lattice sections, which have openings adjusted independently from one another, whereby the adjustable openings of the lattice sections, each sealed off from other lattice sections, communicate with the grate surface openings of associated areas of the grate surface. The adjustable openings of the lattice sections enable adjustment of the resistance of the grate, if necessary, differently at various grate sections depending on the demands for cooling.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: November 30, 1999
    Inventor: Karl von Wedel
  • Patent number: 5983811
    Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers, bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: November 16, 1999
    Assignee: Deutsche Babcock Anlagen GmbH
    Inventors: Kai Keldenich, Jurgen Scheffler, Peter Grell, Othmar Frielingsdorf, Colin Peter Robson
  • Patent number: 5967064
    Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: October 19, 1999
    Assignee: Deutsche Babcock Anlagen GmbH
    Inventors: Kai Keldenich, Jurgen Scheffler, Peter Grell, Othmar Frielingsdorf, Colin Peter Robson
  • Patent number: 5941234
    Abstract: A combustion cage for pellet fuel is an inclined container having at least one wall surrounding a bottom and a support structure. The surrounding wall and bottom of the container have a plurality of holes throughout imparting a hole-to-surface ratio of at least 40% to the wall and bottom. The support structure supports the inclined container in a fixed, inclined position with reference to the horizontal.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: August 24, 1999
    Assignee: Energex Inc.
    Inventors: Robert B. Norburn, Darryl R. Rose
  • Patent number: 5937769
    Abstract: A variety of essentially circulr-planform fire grates having ash discharge openings therein and intimate-contact preventing means thereon is presented. The intimate contact preventing means for the fire grate having upper surface contour of fluctuation-free profile in the circumferential direction of the fire grate comprises first fluctuation-free-bottom spider-web-planform fins having fin upper surface of fluctuation-free profile and second fluctuation-free-bottom spider-web-planform fins having fin upper surface of fluctuational profile. The intimate contact preventing means for the fire grate having upper surface contour of fluctuational profile in the circumferential direction of the fire grate comprises first fluctuational-bottom spider-web-planform fins having fin upper surface of fluctuation-free profile and second fluctuational-bottom spider-web-planform fins having fin upper surface of fluctuational profile.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: August 17, 1999
    Inventor: Kwangsoo Hyun
  • Patent number: 5913274
    Abstract: A grate for a firing plant, having at least one grate track with a plurality of fixed and moving rows of grate-lining units, which rows alternate in the longitudinal direction, are bounded on both sides by side walls and are provided with cooling passages as well as with feed and discharge lines. The grate-lining units are connected at their rear end to a fixed or movable grate-lining bearer and rest with their front end on the following grate-lining unit, and the cooling passages being arranged essentially transversely to the longitudinal direction of the grate. The cooling passages are tubes arranged in a meander shape and integrally cast in the grate-lining units and whose spacing is adapted to the thermal loading on the grate-lining units. The tube spacing preferably decreases from the rear end to the front end of the grate-lining unit.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: June 22, 1999
    Assignee: Asea Brown Boveri AG
    Inventors: Max Kunzli, John Millard, Peter Serck-Hanssen
  • Patent number: 5906194
    Abstract: A side edge assembly for a cooling grate comprises a first aligned array of outer plates arranged in succession in the longitudinal direction of the grate and a second aligned array, which is between the grate and the outer plates, of inner plates arranged in succession in the longitudinal direction of the grate. In the assembled condition the joins of the outer plates and the joins of the inner plates are displaced relative to each other in the longitudinal direction.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: May 25, 1999
    Inventor: Karl Von Wedel
  • Patent number: 5899149
    Abstract: A fuel-conveying incineration grate has grate beams (1) for extending in a longitudinal direction obliquely downward in the longitudinal direction. The grate beams (1) have first surfaces (4) on first sides of the grate beams (1) stepped downwardly in said direction for receiving fuel, opposite surfaces on opposite sides of the grate beams (1), and lateral surfaces (3) sealingly closely adjacent to each other across widths of the grate beams (1) substantially along full lengths of the grate beams (1) in the longitudinal direction. The grate beams (1)relatively reciprocate in the longitudinal direction for conveyting the fuel thereon. At least two longitudinally extending ducts (6, 7) are in thermal communication with the opposite sides of the grate beams (1) for a heat-transmission medium. Connecting points (12, 13) at least at one end of the grate beams (1) provide for flow of the heat-transmission medium at least one of towards and away form the ducts (6, 7).
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: May 4, 1999
    Assignee: Volund Ecology Systems A/S
    Inventors: Siegfried Binner, Rasmus Stig Jensen
  • Patent number: 5842465
    Abstract: Stackable fireplace grates having a minimum of widely spaced legs and posts. One or more mediate posts are positioned inside the grate and on inclined, V-shaped sloping rod members which are supported by front and rear horizontal reinforcing support members. The front and rear distances between the rod member upper ends are less than the distances separating points of connection of the horizontal reinforcing support members to the V-shaped rod members. Thus, grates can be stacked in a minimal space, adjacent grates arranged at right angles to each other, with the rod member tips of one grate fitting up through the horizontal reinforcing supports of an adjacent grate.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: December 1, 1998
    Inventor: Harry J. Cassidy
  • Patent number: 5839427
    Abstract: An artificial ember bed (5) for use within a fireplace (7) is disclosed. The fireplace will include a burner (12, 13) positioned below an elevated log grate (19), on which at least a pair of spaced artificial logs (20, 21) will be positioned. Situated in the space defined by, and between the logs will be an ember bed support grate (24), having an elevated surface on which a plurality of non-combustible artificial embers (25) will be disposed such that in use they will glow to create the visual appearance of glowing embers within the fire. The ember bed support grate may be constructed with a Z-shaped or a C-shaped geometry, or may include a pair of bifurcated legs (33, 34), or a pair of spaced legs (36, 37) for supporting the ember bed support grate on the log grate within the fireplace. In addition, the ember bed support grate can be fashioned as a planar grate, supported either on the logs, or received within notches (39) defined within opposed faces of the logs when situated atop the log grate.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: November 24, 1998
    Assignee: American Gas Log Company, Inc.
    Inventor: Joseph Shorts
  • Patent number: 5722389
    Abstract: An apparatus is described that enables the user to pull a fireplace grate partially out of a fireplace for ease of loading with fuel, and then to push the fuel-loaded grate back into the fire-making position. The apparatus consists of a platform on whose top surface are receptacles which receive the feet of the grate. The platform engages and slides on rails attached to a base resting on the floor of a fireplace.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: March 3, 1998
    Inventor: Lawrence Cranberg
  • Patent number: 5722390
    Abstract: A fireplace wood holder which holds firewood in a vertical position so that the firewood's fibers and water-conducting channels are oriented substantially up and down to allow more complete burning and combustion, and therefore more efficient heat and mass transfer and subsequently a more efficient combustion of the wood. Additionally, the wood holder can be tilted into a filling position to provide a convenient method of adding fuel to the fire.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: March 3, 1998
    Inventor: Harold W. Hannebaum
  • Patent number: 5713345
    Abstract: A grate element for a grate surface, e.g. in clinker cooler, comprises a top plate which is shaped in the form of a box having a surface which is plane at one end, whereas at the other end it consists of in cross section downwardly curved slats which, between them, form slots. The grate element further comprises a corrugated bottom plate which is provided with longitudinal rows of slots and projections rising into the slots of the top plate, and gas channels which are defined by the underside of the slats of the top plate and the upper side of the bottom plate, and open at the slots in the two plates. Accordingly, the top plate of the grate element is effectively cooled, the pressure loss through the grate element is appropriately large, the grate element is protected against falling-through of material and maintenance work in connection with the replacement of grate elements is facilitated.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: February 3, 1998
    Assignee: F. L. Smidth & Co. A/S
    Inventors: Bo Bentsen, Michael Robert Massaro
  • Patent number: 5626127
    Abstract: A fireplace including a heat exchanger beneath the combustion chamber floor. The front panel or surround of the fireplace housing includes a central opening which accesses the combustion chamber. Room air inlets and outlets, which are ducted to the heat exchanger, are horizontally arranged in a duct manifold that is positioned above the front panel opening. By positioning the room air inlets and outlets within the front panel opening rather than in the surround, the entire surround can be faced with marble, brick or other decorative material without having to provide a break therein for the ingress and egress of room air. A fan within the heat exchanger circulates room air in a flow path from the room being heated into the duct manifold inlets, through a first duct and into the heat exchanger, from the heat exchanger and through a second duct, and out through the duct manifold outlets. The fireplace also includes a raiseable hearth overlaying an opening accessing the heat exchanger fan.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: May 6, 1997
    Assignee: The Majestic Products Company
    Inventors: Kenneth R. Maitland, Robert H. Buzzard, Mark R. Barnes, Brian S. Ohlwine
  • Patent number: 5617841
    Abstract: Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate of equally or unequally spaced rods. The design of the rods serves to prevent the ash and clinkers from accumulating on the grate in mounts that could reduce the flow of combustion gas into the fire. In one embodiment, an ignitor rod is provided as one of the spaced rods in the grate assembly. By applying power to the ignitor rod, the rod is raised to a sufficient temperature to ignite unburned biomass pellets in proximity to the ignitor rod.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 8, 1997
    Assignee: Pyro Industries, Inc.
    Inventors: Oliver J. Whitfield, John B. Tacke, Jr.
  • Patent number: 5513625
    Abstract: An improved fireplace grate which controls the scattering of ashes from fire logs is disclosed. A shroud is attached to the outer edges of a fireplace grate so that ashes from burning logs are deflected inward toward the grate instead of outward onto the floor of the fireplace. A removable tray beneath the grate is provided to collect the ashes and allow the ashes to be disposed of by simply removing and emptying the tray.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: May 7, 1996
    Inventor: George R. Landman
  • Patent number: 5488943
    Abstract: Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate of equally or unequally spaced rods. The design of the rods serves to prevent the ash and clinkers from accumulating on the grate in amounts that could reduce the flow of combustion gas into the fire. In one embodiment, the rods define a surface that serves to distribute unburned fuel pellets from a location where they are deposited from a fuel feed conduit.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: February 6, 1996
    Assignee: Pyro Industries, Inc.
    Inventors: Oliver J. Whitfield, John B. Tacke, Jr.
  • Patent number: 5435295
    Abstract: The present invention provides a fireplace rack for use with paper wrapped compressed fire logs in wood burning masonry or steel fireplaces and a portable fireplace unit. The rack comprises a base for supporting one or more fire logs and an upper frame adapted to support a display of artificial logs so that when lit, the paper wrapped fire logs burn up through the artificial logs to give the ambience and appearance of a real pile of logs.
    Type: Grant
    Filed: November 18, 1993
    Date of Patent: July 25, 1995
    Inventor: Paul H. Gerrard
  • Patent number: 5377663
    Abstract: The sidewall end grate block includes a first side which can be placed adjacent to a press plate and a second side which is adjacent to another grate block. The first side includes press plate attachment provisions while the second side includes a tension rod attachment provisions. The press plate attachment provisions on the first side include a plurality of holes which are adapted to receive bolts which can be received by a corresponding holes in the respective adjacent press plate. The tension rod attachment provisions on the second side include a cross-shaped hole and locking protrusions which can accept the head end of a tension rod.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: January 3, 1995
    Assignee: Wheelabrator Environmental Systems, Inc.
    Inventors: Arthur W. Cole, Franklin A. Hamlyn, James D. Dougherty, John M. O'Sullivan
  • Patent number: 5331942
    Abstract: A fuel support grill rack (10) for use in a barbecue grill (11) is disclosed. The grill rack (10) is positioned below a cooking grid. The grill rack (10) includes a substantially horizontal first surface (20) for supporting charcoal and a second surface (21) comprised of a pair of troughs (30a,30b) formed by at least two trough walls (31) angularly depending downwardly from the first surface (20). Each trough (30a,30b) further includes a first end trough (32), a second end trough (33), and an inner trough (34) disposed therebetween. The inner trough (34) is deeper and extends below the first and second end troughs (32, 33). The apices (35, 36) of the first end trough and the second end trough are positioned above an apex (37) of the inner trough (34).
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: July 26, 1994
    Assignee: Weber-Stephen Products Co.
    Inventors: Ross McDonald, Alan Royce, James C. Stephen
  • Patent number: 5299555
    Abstract: A frame element (8) for forming a grate, including two spaced-apart side members (12,14) and several plate members (6) arranged one next to the other between the side members in longitudinal direction thereof, between which plate members is provided a gas-venting slot (34). The side members (12,14) are formed by two opposing surfaces of a rigid frame (2), and the plate members (6) are each constructed as individual structural parts releasably connectable to the side members (12,14). The plate members (6) are preferably inserted one after the other into longitudinally extending guideways (18,20) arranged on the frame and are spaced apart by spacing projections (30,32), the spacing being necessary to form a gas-venting slot (34).
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: April 5, 1994
    Assignee: Abrasion Engineering Company Limited
    Inventor: Jean-Claude Claes
  • Patent number: 5295474
    Abstract: Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate of unequally spaced rods. The design of the rods serves to prevent the ash and clinkers from accumulating on the grate in amounts that could reduce the flow of combustion gas into the fire.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: March 22, 1994
    Assignee: Pyro Industries, Inc.
    Inventors: Oliver J. Whitfield, Phillip W. Robertson, Abbas Dadkhah-Nikoo, Craig G. Wright
  • Patent number: 5259362
    Abstract: A furnace having a thrust grate formed of grate bars which are loosely disposed on alternate movable and stationary grate bar supports, having freedom of movement to tilt in a vertical direction. In a horizontal direction, a grate bar is fixed on each grate bar support, preferably in the middle, and neighboring grate bars are connected to each other, the outermost grate bar on the stationary grate bar support being coupled to a driving element and which, upon thermal expansion, displaces a side shield with respect to the furnace wall.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: November 9, 1993
    Assignee: Noell K&K Abfalltechnik GmbH
    Inventor: Friedrich Krieger
  • Patent number: 5209169
    Abstract: Improvements for an incinerator system including double reburn tunnels, an excitor within a reburn tunnel, a choker for closing off part of a reburn tunnel, a grate near the incinerator's inlet to permit the drying and initial combustion of refuse, an ash scoop which remains out of the water during most of its operation. The use of dual reburn tunnels, along with a damper that permits the closure of at least one of them, permits the efficient and environmentally acceptable utilization of the main incinerator chamber even with minimal refuse contained there. With less refuse, only one reburn unit operates; it will still have sufficient heat and throughput to maintain, with minimal auxiliary fuel, the temperatures needed for complete combustion. An excitor, or solid stationary object placed within the reburn tunnel, permits the retention and reflection of the heat generated by the burning to assure complete combustion of all hydrocarbons within the reburn unit.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: May 11, 1993
    Inventor: John N. Basic, Sr.
  • Patent number: 5205100
    Abstract: A sealing beam comprises a longitudinal succession of elements disposed between two grate layers made up of a longitudinal succession of alternately fixed and mobile (in longitudinal reciprocation) bars. Each element comprises an I-shaped armature with a web between a lower flange forming a baseplate and an upper flange forming a roof and two U-shaped profile rubbing members with a base bearing on the edge of the corresponding grate layer. Springs passing through holes in the web of the armature urge the rubbing members against the layer edges to compensate for their thermal expansion. The armature and the rubbing members are manufactured by welding to achieve adequate sealing between the rubbing members and the armature.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: April 27, 1993
    Assignee: Traitement Industriel des Residus Urbains (T.I.R.U.)
    Inventor: Didier Lecointre
  • Patent number: 5178128
    Abstract: A grate bar assembly for use in a combustion furnace, particularly, in a waste incinerator having a combustion chamber, includes a plurality of overlapping rows of grate bars extending across the combustion chamber, each row of grate bars being composed of a plurality of juxtaposed grate bars; a grate bar support; and a preferably hydraulically operated releasable clamping device disposed outside the combustion chamber for laterally clamping the plurality of overlapping rows of grate bars and for moving the juxtaposed grate bars toward each other. A method of operating the grate bar assembly is also disclosed.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: January 12, 1993
    Assignee: Noell K+K Abfalltechnik
    Inventor: Friedrich Krieger
  • Patent number: 5103744
    Abstract: An apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels such as peat, coal, wood, straw or garbage, comprising a fuel supply and air supply to a bar grate which is used as combustion site and cooperates with material loosening means in the form of disks, prongs or the like which extend through the grate interstices and are mounted on a support member which extends transversely to the grate bars, in which the disks are reciprocable relative to the grate bars in the direction towards the same. The material loosening disks are fitted onto support members each in the form of a support rod of substantially rectangular cross-section such that the disks are individually displaceable in the direction of the support rod.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: April 14, 1992
    Inventor: Nils E. Tunstromer
  • Patent number: 5076253
    Abstract: The burner is intended for combustion of wood logs or other similar solid fuels. The burner which will be called the basket burner is shaped as an open inclined basket (1) comprising a bottom plate (3) and a backing plate (4) which are inclined towards the horizontal plane, respectively the vertical plane, so that the connection between the bottom plate and the backing plate constitutes the lowest part of the basket. The backing plate forms a chute or hold for the package of wood logs. The two plates contain holes (8) for air. The fuel is piled up against the backing plate and is supported by the bottom plate so as to form a compact bundle or parallel wood logs with minimized surface/volume ratio. The design of the basket burner makes the wood logs serve as efficient supporting burners for each other. Thanks to the shape of the basket burner the burning wood logs are successively brought towards each other and towards the lowest part of the basket burner during the combustion.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: December 31, 1991
    Inventor: LindstroOlle B.
  • Patent number: 5067476
    Abstract: An artificial log assembly is provided which produces a realistic looking flame resembling that of a natural wood log fire. The assembly includes a grate, cement logs positioned upon the grate, and a combustible log made from wax or other clean burning material positioned among the cement logs. The grate includes steps which allows the artificial logs to be positioned in such a manner that they resemble a stack of natural wood logs. One or more cement logs extend over the combustible log to deflect the flame generated thereby. An ash pan is removably positioned beneath the grate for trapping the ash generated by the combustible log.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: November 26, 1991
    Assignee: Majco Building Specialties, L.P.
    Inventor: Robert T. Rhodes, Jr.
  • Patent number: 5009217
    Abstract: A fireplace log holder and alarm system is designed for placement within the firebox of fireplaces. The log holder is comprised of parallel log supports having a very rough top surfaces so as to minimize rolling and slippage of the logs. Attached to the front of the log supports is the alarm mechanism which includes metal uprights having eyes in their upper ends. An elongated hollow metal tube spans the eyes of the uprights and is loosely received within them. During the course of combustion as logs shift and are partially consumed, any forwardly shifting log will precipitously contact the metal uprights or the metal tube and cause the tube and uprights to strike together. This rapid striking action generates a loud noise which serves to notify the occupants of the dwelling that log shifting has occurred and that a dangerous repositioning of burning logs demands their attention.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: April 23, 1991
    Inventor: Hewitt M. Johnson
  • Patent number: 4981090
    Abstract: A movable grate comprising a number of grate steps which are arranged adjacent each other, partly overlap one another and are pivotable around an axis extending in the longitudinal direction of said grate step, and which are pivotably mounted outside shield members (7, 10) which in lateral direction enclose a combustion chamber, end plates (5) being rigidly secured to the ends of the grate steps and swingable therewith, the end plates being aligned with and fitted in openings in the shield members. The novel matter of the invention resides in that portions (10) of the shield members having such openings aligned with the end plates (5), are displaceably mounted relative to adjoining shield members (7) in the direction of the grate step axis, and that the shield portions (10) which outwardly sealingly engage adjoining shield members (7) and inwardly sealingly engage the end plates (5), are in the direction of said axis rigidly secured to the grate step shaft.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: January 1, 1991
    Assignee: B & S Miljoteknik A/S
    Inventor: Hans B. Andersen
  • Patent number: 4955362
    Abstract: A product for use with a fireplace grate comprising a sheet of metal, preferably of mild steel, adapted to fit into a fireplace and cover the upper surface of the grate normally used therein. The sheet is bent upward at its long edges or otherwise formed so that the upper face thereof when laid flat on a grate is concave. The sheet has evenly spaced holes or apertures through its entire area to permit the free and uniform flow of air through it. The sheet is sufficiently strong to hold the fuel to be burned in the fireplace and is of a thickness, or gauge, sufficient to withstand premature destruction in use.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: September 11, 1990
    Assignee: Ronald W. Underdown
    Inventor: Ronald W. Underdown
  • Patent number: 4896650
    Abstract: A fire grate is formed with a slot configured to receive a narrow dimensioned section of a briquette. The walls surrounding the slot support the briquette in vertical orientation with the narrow dimensioned section of the briquette extending upwardly. Combustion air or gas flows through the slot for exposing the briquette to the combustion air or gas.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: January 30, 1990
    Assignee: Pyromid, Inc.
    Inventor: Paul W. Hait
  • Patent number: 4836185
    Abstract: A newspaper holder for use in a fireplace to receive folded newspapers in a vertical position to promote controlled combustion for warmth and visual effect when ignited wherein there is a metallic base and a plurality of spacer means raising vertically from the base forming spaces therebetween to receive pluralities of said folded newspapers for igniting and burning.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: June 6, 1989
    Inventor: David A. Kudija
  • Patent number: 4829975
    Abstract: A fire grate is formed with a slot configured to receive a narrow dimensioned section of a briquette. The walls surrounding the slot support the briquette in vertical orientation with the narrow dimensioned section of the briquette extending upwardly. Combustion air or gas flows through the slot for exposing the briquette to the combustion air or gas.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: May 16, 1989
    Assignee: Pyromid, Inc.
    Inventor: Paul W. Hait
  • Patent number: 4793471
    Abstract: A furnace grate structure for a furnace or incinerator on which solid fuel advances in an advancing direction has at least two parallel grate beams extending substantially transversely to the advancing direction, the beams being mounted on a substructure and forming upwardly facing support structures. The grate beams form grate beam sections with gaps formed between the end surfaces of adjacent grate beam sections. The gaps are covered by a covering device and a recess is provided in the end surfaces of the grate beam sections to receive the covering device.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: December 27, 1988
    Assignee: Deutsche Richard Kablitz Gesellschaft fur Okonomie der Dampferzeugungskos ten und Feuerungskontrolle Richard Kablitz GmbH & Co. KG
    Inventor: Martin Bartels
  • Patent number: 4776287
    Abstract: A hearth grate comprises a succession of transverse bars which are alternately fixed and movable with a reciprocating movement, said bars being formed by disposing in side-by-side relationship at vertical lateral faces elements which are generally rectangular, with a projection portion at the junction of a frontal face and a dorsal face and in the dorsal face blowing orifices opening in said projection portion.The elements are held by the insertion into openings provided in the frontal faces of limbs of a fastener. The fastener comprises a transverse portion which is disposed in set-back relationship with respect to the frontal faces. Plate portions are welded over the openings to retain the fastener.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: October 11, 1988
    Assignee: T.I.R.U.-Traitement Industriel des Residus Urbains
    Inventor: Andre Moreau
  • Patent number: 4773387
    Abstract: Newspaper or the like is prepared for burning by folding and rolling operations to provide its complete combustion. The paper is folded such that one edge is placed parallel to and spaced from the opposite edge. The folded paper is then rolled to form a cylindrical fuel element. The cylindrical fuel element is advantageously placed in a fixture retaining its rolled and folded condition during binding. The fixture includes a first and second end supports forming a rectangular channel receiving the cylindrical fuel element. A connecting member maintains the supports relative to each other. A constricting member is positioned in the channel which reduces the width of the channel to maintain the fuel element in its rolled condition. The fuel elements may be in the form of kindling sticks, or bundles of such sticks, or individual logs.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: September 27, 1988
    Assignee: A. Zulkowitz Associates
    Inventor: Albert J. Zulkowitz
  • Patent number: 4770159
    Abstract: Fireback support apparatus for supporting a fireback in a fireplace or other area, which does not require attachment to a wall and which provides for varying the angle with respect to the vertical of the fireback. The apparatus includes two base members with flat horizontal surfaces with two vertical upright rear walls, with a transverse opening therebetween and a plurality of steps onto which a fireback is placed for elevational and angular position. Each of the base members also has an opening in the horizontal surface of the upright portion into which legs from a grate may be placed.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: September 13, 1988
    Inventors: Richard Brown, James D. Conner
  • Patent number: 4759340
    Abstract: A fire grate having a support framework including an imperforate base plate, a rear backing plate and end plates. The grate has combustible material positioning and sensing means and can trap and reburn volatile products. Air delivery passages supply fresh air directly to the top of the grate to assist in reburning volatile products.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: July 26, 1988
    Inventor: Wun C. Chong
  • Patent number: 4719899
    Abstract: A depot for granular carbonaceous fuel is shown including a refractory matrix containing the granular fuel. The refractory matrix includes either one or more baskets of screen material or a refractory binder. Vertical flues are included in the matrix for upward flow of air therethrough during combustion of the granular fuel. A manifold below the matrix supplies air for the vertical flues. Granular fuel and ashes thereof are prevented by the refractory matrix from moving into the flues whereby the flues remain open during combustion of the granular fuel. The fuel may include a relatively large amount of anthracite to provide for a low cost fire. A granular fuel mixture that includes 60 wt % to 80 wt % Buckwheat anthracite and 40 wt % to 20 wt % of charcoal having a size of 35 to 85 mesh Tyler scale is disclosed.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: January 19, 1988
    Assignee: Bar-B-Quik Corp.
    Inventor: William H. Burkhart
  • Patent number: 4688548
    Abstract: An apparatus for supporting a fireback without the need for additional support from a wall or other structure. The apparatus consists of two support bases, each with a flat upper surface including two buttresses separated by a gap, arising perpendicularly therefrom. The fireback is placed in the gap between the buttresses and held ajar in a generally upright position. The invention includes insertable wedges which permit the varying of the gap, and therefore the angle of incidence of the fireback relative to the vertical plane. The invention maximizes the full depth of the fireplace, as well as the light reflection, heat radiation, and ornamental qualities of the fireback.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: August 25, 1987
    Assignee: The Country Iron Foundry
    Inventor: Donald B. Stoughton
  • Patent number: 4638905
    Abstract: A furnace grate structure for a furnace or incinerator on which solid fuel advances in an advancing direction has at least two parallel grate beams extending substantially transversely to the advancing direction, the beams being mounted on a substructure and forming upwardly facing support surfaces. A bank of elongated grate bars which extend substantially parallel to the advancing direction are supported on the upwardly facing support surfaces, and are spaced from each other. Each of the grate beams comprises a plurality of sections arranged end to end so that the length of the grate beams can be varied simply by changing the number of sections.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: January 27, 1987
    Assignee: Richard Kablitz GmbH & Co. KG
    Inventor: Manfred Weiss
  • Patent number: 4632089
    Abstract: A water circulated grill having a fire bowl and a food supporting grill thereon the food supporting grill being made up of interconnected tubular members through which water is circulated to maintain the supporting grill surfaces cool while food thereon is heated by a heat source in the fire bowl.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: December 30, 1986
    Inventor: Lawrence Wardell