Grate Bar Patents (Class 126/167)
  • Patent number: 9803858
    Abstract: The present application discloses a grate bar for a thrust grate of a furnace. The grate bar comprises an elongated recess (43) at a first side of the grate bar. The elongated recess comprises two parallel sliding surfaces which are oriented in longitudinal direction of the grate bar. An engaging element (38) is provided at a second side of the grate bar, which is opposite to the first side. The engaging element comprises two parallel sliding surfaces which are oriented in longitudinal direction of the grate bar. The elongated recess is shaped such that a corresponding neighboring engaging element of a neighboring part is movable within the elongated recess in the longitudinal direction relative to the grate bar. The grate bar further comprises two actuating surfaces (34,35) at a bottom side of the grate bar for taking up a protrusion of a grate.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: October 31, 2017
    Assignee: TISKA GMBH
    Inventor: Wolfgang Schmid
  • Patent number: 9464509
    Abstract: The invention relates to a drip mat for equipment such as drill rods, drill pipes, and accessories therefor. The drip mat comprises several components, such as a flat base plate, one or more bounding webs surrounding the base plate at the edges thereof, which bounding webs together with the base plate form a container that is open at the top, wherein the bounding webs are provided in some areas with slot-shaped recesses that are open at the top.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: October 11, 2016
    Inventors: Timm Kroll, Peter Kroll
  • Publication number: 20130306050
    Abstract: A grate bar for combustion systems, having a substantially closed surface facing the combustion side, a rear support region designed to be placed on a grate carrier for forming the grate, and a front nose region, which is rounded between the surface and front edge and has a bearing surface designed on the lower face and further has cooling fins for air cooling which protrude from the lower face of the surface forming the grate. A head part in the interior has at least regionally thickened head fins for air cooling in the longitudinal direction and vertical direction below the surface facing the combustion side. The grate bar can also be a reversible grate bar.
    Type: Application
    Filed: January 5, 2012
    Publication date: November 21, 2013
    Applicant: Seko-Patent GmbH
    Inventor: Theodor Koch
  • Patent number: 8511295
    Abstract: A modular-hinged grilling grate system may include a modular outer support structure and at least one attachable swivel grill grate section.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: August 20, 2013
    Inventor: Rolf Buerkle
  • Publication number: 20080163860
    Abstract: A grate bar and a grate for a stepped-grate furnace stoker. The grate bar includes a flat part whose top surface is used to receive the incinerated elements, and the extends into a rear end and a front end, each forming a return that acts as a support point for the bar. The bar also includes a longitudinal projection located under the flat part, and that extends at least partially between the rear and front ends of the bar. At least one angled cutting element or knife is located under the flat part, on a first side of the longitudinal projection, whose function is to facilitate the removal of the refractory materials that have accumulated progressively. The grate includes at least one bar or group of three bars. In the second case, the central bar in the group is mobile in relation to the two lateral bars.
    Type: Application
    Filed: May 3, 2006
    Publication date: July 10, 2008
    Inventor: Andre Simper
  • Patent number: 6422161
    Abstract: A combustion grate including fire bars which are either wholly or partially cooled by a fluid circulating in a closed regulating circuit. The flow lines which conduct the fluid have thermal expansion capability. In particular, windings are provided in the shape of a helical spring in these flow lines. The fire bars include corrugated exchangers and can be replaceable rods.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: July 23, 2002
    Inventor: Theodor Koch
  • Patent number: 6302038
    Abstract: A fire grate assembly for stoker incinerators. A plurality of stationary and movable grate members are alternately arranged in the assembly. The assembly also has a preventing member, such as a liner plate, which is detachably mounted to an end of each of the movable grate members for preventing the stationary grate members and the movable grate members from directly contacting each other, while allowing the movable grate members to be linearly movable relative to the stationary grate members. The preventing member is replaceable and can have a countersunk hole, thus being adapted for bolting the end of each of the movable grate members.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: October 16, 2001
    Assignees: Daewoo Engineering and Construction Corporation, Daewoo Heavy Industries, Ltd., Korea Institute of Machinery & Metals
    Inventors: Jung Dae Seo, Se Kwang Kim, Il Sang Huh, Sang In Keel, Seock Joon Kim
  • Patent number: 6217318
    Abstract: “AN IMPROVEMENT IN A GRATE BAR FOR PELLETIZING AND SINTERING FURNACES” comprised of a single body (10) provided with a higher horizontal girder (1) of rectangular cross-section supported in its ends by I-shaped legs (2) which are provided in their higher and lower edges, respectively, with an inverted V-shaped rim (3) and a square shoe (4); under the horizontal girder (1) a sub-girder (5) of an isosceles triangle cross-section is defined, the sides of which smoothly match with the sides of the girder (1) and make out a lower apex that defines a sharp edge pointing downwards referred to escape edge 7; wherein two transverse spacers (6) of rectangular cross-section also having escape edges (11) are provided adjacent to the girder (1).
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: April 17, 2001
    Assignee: Companhia Vale Do Rio Doce
    Inventors: Marcelo De Giovanni Pache De Faria, José Fernando Leite Marques
  • 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: 5673636
    Abstract: A process wherein an incineration grate is tempered by a medium that flows therethrough. The grate has a number of hollow plates made of sheet metal. Each plate lies on the next underlying plate. A connection pipe is arranged on one side of each plate and a discharge pipe is arranged on the other side of each plate for the flowing medium. The individual plates are crossed by a plurality of tubular elements which open on the top side of the plates. Primary air is supplied to the materials to be incinerated through the tubular elements. Primary air supply is individually dosed to each tubular element.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: October 7, 1997
    Assignee: Doikos Investments Ltd.
    Inventor: Jakob Stiefel
  • 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: 5271339
    Abstract: A combustion apparatus for a refuse incinerator has a plurality of rows of grates arranged in parallel in the directions of breadth and in series in the longitudinal directions of a combustion zone and a post-combustion zone of the combustion apparatus. The rows consist of immobile grates and mobile grates alternately arranged. Immobile girders support the immobile grates. Mobile girders support the mobile grates. A partition wall divides the combustion apparatus into the combustion zone and the post-combustion zone. Seals cooperates with the mobile girders and are located on the partition wall. A hydraulic cylinder shuttles the mobile girders. Bearing housings are mounted on upper protrusions of the mobile girders holding the mobile grates so as to be able to vibrate.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: December 21, 1993
    Assignee: NKK Corporation
    Inventors: Miki Yamagishi, Sadao Suzuki, Shigeyuki Doi
  • Patent number: 5245983
    Abstract: A grate bar support for use in combustion furnaces, particularly rubbish incinerators, has a hollow-box shaped member having a trapezoidal cross-section along a longitudinal direction and trapezoidal cross-section along a direction transverse to the longitudinal direction, a front and a rear end and a nozzle shaped air outlet opening located at the front end of the hollow box shaped member. A grate is formed by a plurality of overlapping alternately stationary and movable rows of grate bars having a stroke which corresponds to the distance two adjacent rows of grate bars are offset with respect to each other. Preferably, the grate bar supports are arcuately shaped so as to provide a tight grate surface in both cold and hot operating conditions.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: September 21, 1993
    Assignee: Noell K+K Abfalltechnik GmbH
    Inventor: Friedrich Krieger
  • 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: 5197397
    Abstract: A grate structure for a horizontal type incinerator has a plurality of rows of grates arranged in parallel in perpendicular X and Y directions of the incinerator. Each X-direction row has a series of immovable grates and a series of movable grates alternating with the immovable grates. The immovable grates and movable grates are supported at a predetermined angle of .theta..sub.1 relative to a surface of the immovable supporting member. The immovable grates are pivotally mounted on an immovable support and the movable grates are pivotally mounted on a sawtooth shaped movable support. The free forward end of each grate rests on the adjacent grate. The movable grates are reciprocated back and forth along the upper surfaces of the immovable grates. In the Y direction, each row of grates is pivoted on a common axle by way of a common bearing member.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: March 30, 1993
    Assignee: NKK Corporation
    Inventors: Miki Yamagishi, Sadao Suzuki, Shigeyuki Doi
  • Patent number: 5081939
    Abstract: A bar for a rotary grate is of T-section and has an enlarged head and a fin projecting inwardly therefrom. The head is formed with an end face directed outward from the fin and a pair of substantially parallel side faces extending inward obliquely from the end face. The side faces extend at an angle of between 40.degree. and 75.degree., preferably about 60.degree., to the end face. Thus air exiting from inside the roller-grate drum flows obliquely to a radius from the drum-rotation axis. This ensures that even if the material being burned does not form a continuous layer on the surface of the roller, the air will be likely to impinge this material. The fin extends generally centrally from the head and has a centerline that generally bisects the head. The bar has ends formed with blocks projecting to opposite sides of the bar so that blocks of adjacent bars can interfit.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: January 21, 1992
    Assignee: Deutsche Babcock Anlagen Aktiengesellschaft
    Inventor: Anton Esser
  • Patent number: 4719900
    Abstract: The grate of an industrial furnace is assembled of elongated grate bars which form rows of neighboring grate bars and the grate bars of neighboring rows partially overlap each other. Each grate bar has a top wall, a front end wall and two sidewalls, and such walls define an air-admitting passage having a portion in one or more hollow upward extensions of the top wall close to the front end wall. The extensions have transverse openings which discharge air from the respective portions of the passages into the surrounding atmosphere, namely into fuel which is deposited on the grate. The openings of each extension are located in planes which are inclined to the longitudinal direction of the corresponding top walls through angles of 80-90 degrees, and such openings can be inclined forwardly, rearwardly, downwardly or upwardly. If the grate bars have top walls with several extensions, the openings in the extensions of each grate bar can be staggered relative to each other.
    Type: Grant
    Filed: June 11, 1986
    Date of Patent: January 19, 1988
    Inventor: Walter J. Martin
  • Patent number: 4672947
    Abstract: A grate bar has an elongated top wall, two longitudinally extending sidewalls, transversely extending front and rear walls, a bottom wall, and several longitudinally extending ribs at the underside of the top wall. The walls define an air heating chamber which receives fresh air from a first opening below the rar wall and discharges heated air by way of a second opening which is provided in one of the sidewalls close to the front wall. The ribs divide the chamber into several elongated channels and a compartment which is located immediately behind the front wall and communicates with the channels as well as with the second opening. At least one of the ribs which are nearest to the one sidewall is spaced apart from the bottom wall so that the channels which flank such rib can communicate with one another along the upper side of the bottom wall.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: June 16, 1987
    Inventor: Johannes J. E. Martin
  • Patent number: 4610209
    Abstract: The invention concerns a grate bar for a grate tumbler of a tumbler grate of a trash incineration installation or similar combustion facility with a base rod showing an outer rod surface and an inner rod surface, as well as side surfaces, a head surface and a foot surface, the cross-section form being T-shaped with a cross rod (15). The invention also concerns a grate tumbler for the tumbler grate of a trash incineration installation or the like with a hollow shaft and a cylindrical carrier construction, with grate-bar carriers resting upon the carrier construction and grate bars mounted upon the carriers, while the grate bars are mounted upon the grate bar carriers (8) in such fashion that the slit (25) between adjacent grate bars (11) is no greater than 1 mm in width on the combustion-chamber side.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: September 9, 1986
    Assignee: Mullverbrennungsanlage Wuppertal GmbH
    Inventor: Sedat Temelli
  • Patent number: 4548139
    Abstract: A grate for industrial furnaces wherein pairs of stationary grate bars flank movable grate bars. The grate bars of each pair are connected to each other by an elongated coupling device which extends through one or more elongated slots of the movable grate bar between them. The coupling device has two bolts whose heads are pivotably anchored in the downwardly extending ribs of the stationary bars and an internally threaded sleeve which is located between the slots in two downwardly extending ribs of the movable grate bar and meshes with the shanks of the two bolts. The shanks have oppositely inclined threads and the sleeve is held in the selected position by a lock nut.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: October 22, 1985
    Assignee: Martin GmbH fur Umwelt- und Energietechnik
    Inventor: Erich Weber
  • Patent number: 4520792
    Abstract: A grate for use in industrial furnaces wherein rows of elongated grate bars partially overlap each other and the grate bars of each row include neighboring stationary and longitudinally movable grate bars. The undersides of the marginal zones of neighboring grate bars are undulate by exhibiting alternating teeth and tooth spaces which ensures rapid expulsion of solid particles which happen to penetrate between the lateral surfaces of neighboring grate bars when the movable grate bars reciprocate relative to the adjacent grate bars. The flanks of teeth at the undersides of the marginal zones make with the upper sides of the respective grate bars acute angles of between 20 and 50 degrees, and the thickness of each marginal zone above the deepmost portion of a tooth space is a small fraction of the thickness of the marginal zone above the top land of a tooth.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: June 4, 1985
    Assignee: Martin GmbH fur Umwelt- und Energietechnik
    Inventor: Erich Weber
  • Patent number: 4314541
    Abstract: A grate bar for a furnace grate lining is disclosed. The grate exhibits lateral contact surfaces and external ribs on its lower side in the vicinity of the contact surfaces. At least one jet-like air channel is in part formed by a recess in at least one lateral contact surface between adjoining grate bars.
    Type: Grant
    Filed: February 14, 1979
    Date of Patent: February 9, 1982
    Assignee: Firma Josef Martin Feuerungsbau GmbH
    Inventors: Johannes J. Martin, Walter J. Martin
  • Patent number: 4240402
    Abstract: A grate for use in industrial furnaces has a frame which supports a number of elongated parallel grate bars having a T-shaped or U-shaped cross-sectional outline. One end portion of each bar has a socket which overlies a portion of an elongated rail forming part of or secured to the frame. The other end portions or the regions close to the other end portions of the bars are coupled to each other by a transverse shaft which holds the bars against movement at right angles to their longitudinal extensions and away from the frame. A second coupling system is provided close to the end portion of each bar to hold the bars against movement in the aforementioned direction. The second coupling system may include lateral projections provided on the bars and extending below or into openings of the neighboring bars. Alternatively, the second coupling system may include locking bolts which are affixed to or movable transversely of alternate bars and extend below or into openings of one or both neighboring bars.
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: December 23, 1980
    Assignee: Josef Martin Feuerungsbau GmbH.
    Inventors: Johannes J. Martin, Walter J. Martin
  • Patent number: 4185956
    Abstract: A gas permeable structural part, particularly for use in burning and sintering devices, for withdrawal preferably of hot gases from a layer of granular material with a group of rods arranged parallel to one another and spaced from one another, which rods form a gap respectively therebetween, the gap width being smaller than the diameter of the smallest material granule. The grid rods have the smallest possible cross-section, and extend as short as possible in a direction perpendicularly to the surface of the structural part, solely assuming the mechanical pressure of the material loading the grid rods without deformation.
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: January 29, 1980
    Assignee: Readymix Cement Engineering GmbH & Co. KG
    Inventor: Hugo Balster