Coke-oven Type Patents (Class 202/248)
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Patent number: 4118284Abstract: In the construction of a plug-type, coke oven door, which plug is fitted with an integral flue or duct for venting of gases, the front and side walls of the plug are constructed so as to provide sufficient thermal conductivity, whereby heat entering the duct, primarily by conduction through the front wall, may readily be transferred to the left and right side walls thereof so as to maintain a desirable high temperature boh within the duct and at the exterior surfaces of the side walls to prevent or significantly decrease carbon accumulation.Type: GrantFiled: October 31, 1977Date of Patent: October 3, 1978Assignee: United States Steel CorporationInventors: Walter A. Bowman, Richard L. Wessel
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Patent number: 4115203Abstract: A knife edge type of sealing means for coke oven doors having edgewise flexibility permitting the knife edge strip to adjust inwardly and outwardly with respect to the plane of the seating surface of the door jamb as the door jamb warps under service conditions due to exposure to oven heat. A number of different forms are disclosed, in several of which the knife edge strip is made up of end-butting or overlapping sections jointed for relative expansive and contractive movement, the strip being tightly held in a transversely slotted retainer support of U-shape in cross-section, which is in turn sealingly secured to a flexible diaphragm member, of either of two forms, attached to the coke oven door. Another form of knife edge sealing strip is partially slotted from the inner edge outwardly while the U-shaped retainer member is expansively jointed.Type: GrantFiled: January 6, 1977Date of Patent: September 19, 1978Assignee: Wilputte CorporationInventor: Roy Naevestad
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Patent number: 4110173Abstract: A sealing closure for an opening of a coking oven includes a frame mounted on the coking oven about the opening, a door receivable in the frame with a clearance therefrom in a closing position, and an arrangement for sealing the clearance. The sealing arrangement consists of a sealing member including a rigid support element and a sealing element of a resiliently yieldable material mounted on a marginal portion of the support element and adapted to sealingly contact a contact surface of the frame in the closing position of the door. The support element is connected to the door for an adjustment of the position thereof, and is retained in a selected adjusted position. A marginal portion of the support element is received in an elongated recess and has longitudinally distributed projections which are accommodated in a plurality of cutouts in the sealing element, the cutouts extending from the recess to a sealing surface contacting the contact surface of the frame.Type: GrantFiled: January 17, 1977Date of Patent: August 29, 1978Assignee: G. Wolf Jr. KommanditgesellschaftInventor: Kurt Dix
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Patent number: 4107879Abstract: A door is of the type wherein the weight of the door causes locking thereof against a door frame. The door frame is of the type having extending outwardly therefrom vertically spaced pairs of support hooks for supporting the door. The door includes a door element adapted to be sealed against the door frame. A pair of vertically spaced horizontally extending locking bars are carried by the door element. Each locking bar has opposite round ends adapted to rest on and be held by a respective pair of support hooks. A pair of locking support members, one each associated with a respective locking bar, are mounted for vertical sliding movement along the door element. Each locking bar is pivotally connected to the respective locking support member about a respective horizontal axis such that upon positioning the locking bars on the respective hooks, the weight of the door will cause the locking bars to pivot about the respective pivot axes in directions away from the door element.Type: GrantFiled: July 21, 1977Date of Patent: August 22, 1978Assignee: Didier Engineering GmbH.Inventor: Franz Steimann
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Patent number: 4089424Abstract: A support is pivoted to a frame and supports a first hydraulic drive for actuating movable jaws to engage removing latches of a door to be removed. The support also supports a separate second hydraulic drive for locking or unlocking a door locking device of the door. A separate third hydraulic drive is connected between the frame and the support for pivoting the support and a removed door suspended thereby with respect to the frame.Type: GrantFiled: December 10, 1976Date of Patent: May 16, 1978Assignee: Didier Engineering GmbHInventors: Franz Steimann, Claus Nagorny
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Patent number: 4086145Abstract: A coke oven door lining assembly involving a vented, metallic door lining having barrier and support means serves to lower coke oven gas pressure at the door sealing edges and thereby reduce emissions. The lining may be open or closed along its length. Other advantages of the assembly involve reduced maintenance, simplicity of manufacture, and minimization of the occurrence of dense, hard to remove carbonaceous deposits on the lining.Type: GrantFiled: March 14, 1977Date of Patent: April 25, 1978Assignee: Jones & Laughlin Steel CorporationInventor: Joseph M. Muller
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Patent number: 4086231Abstract: A coke oven door for a coke oven which has an oven opening with a receiving frame extending around the opening comprises a door body with a sealing plate secured to the face of the door body which is adapted to close the oven opening. The sealing plate is of thin metal material and is held in spaced relationship to the front face of the door body by spacers. The plate includes an annular peripheral portion with an inturned flange directed inwardly toward the receiving frame. Spring biasing means mounted on the door engage against the rear edge of the flange at spaced locations around its periphery and bias the flange inwardly into sealing engagement with the receiving frame.Type: GrantFiled: October 28, 1975Date of Patent: April 25, 1978Inventor: Takatoshi Ikio
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Patent number: 4080266Abstract: A closure for an opening of a coking oven includes a door receivable in an opening of a circumferentially complete frame mounted on the coking oven, with a clearance therefrom. The clearance is sealed by a sealing member adjustably mounted on the door and contacting a contact surface of the frame in the closing position of the door. The contact surface of the frame and the sealing member are protected from deposition of volatile byproducts of the coking process thereon by an outwardly projecting circumferentially complete stepped ridge provided on the frame in between the open end of the opening and the contact surface of the frame. At least one groove may circumferentially surround the open end of the opening, and the door may have regions juxtaposable with the steps of the ridge and with the groove and having configurations complementary to the ridge and the groove to define a labyrinthine passage for the volatile byproducts between the open end and the contact surface of the frame.Type: GrantFiled: January 14, 1977Date of Patent: March 21, 1978Assignee: G. Wolff Jr. KommanditgesellschaftInventor: Kurt Dix
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Patent number: 4071414Abstract: A method of smokeless charging of coke ovens with coal charge in which coal is poured into each chamber of the coke oven in two stages: firstly coal charge is loaded into the oven chamber through extreme holes and charging gases liberated during said operation are discharged simultaneously, the loaded coal charge is held within the oven, after which the latter is replenished to capacity with coal charge through central holes, charging of the oven which is next in terms of the charging schedule and replenishing of the preceding one being effected simultaneously.Type: GrantFiled: March 5, 1976Date of Patent: January 31, 1978Inventors: Leonid Nikolaevich Fidchunov, Stanislav Sergeevich Balyk, Adolf Nikolaevich Silka, Nikolai Konstantinovich Kulakov, Leonid Fedorovich Bakhtarov, Alexandr Abramovich Azimov, Vladimir Mikhailovich Davydenko, Nikolai Vasilievich Balitsky, Evgeny Petrovich Likhogub, Gersh Abramovich Dorfman
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Patent number: 4067778Abstract: A coke oven door has a primary seal that includes a first metal knife edge in contact with a door jamb first sealing surface, and a secondary seal that includes a second metal knife edge in contact with a door jamb second sealing surface. The plenum or space between the sealing knife edges is maintained at super atmospheric pressure by flowing coke oven gas into the plenum. In a modification of the invention, the secondary seal includes a metal strp in contact with an elastic material; the plenum between the sealing surfaces being also pressurized above atmospheric pressure and purged of coke oven gas.Type: GrantFiled: December 8, 1976Date of Patent: January 10, 1978Assignee: Koppers Company, Inc.Inventors: Joseph Van Ackeren, Linwood G. Tucker
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Patent number: 4060459Abstract: An improved coke oven door frame and jamb assembly wherein the oven front wall which is defined by the frame has an elongated height dimension and the frame and jamb members which comprise the assembly are fabricated from steel plates. The jamb extends outwardly from the outer face of the frame adjacent the peripheral edges thereof outboard of an elongated coke oven door opening included in the frame. The jamb is comprised of a top jamb member, a bottom jamb member and opposed elongated side jamb members which are interconnected to each other at their ends. The frame includes elongated grooves in the outer face thereof adjacent the opposed side edges thereof with these grooves having a width x adapted to receive the side jamb members which have a thickness y. Width x is greater than thickness y in order to provide a clearance area between the groove side walls and the associated side of the jamb members.Type: GrantFiled: July 6, 1976Date of Patent: November 29, 1977Inventor: Patsie Carmen Campana
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Patent number: 4036702Abstract: An improved coke oven sealing apparatus which is adapted to constantly maintain secure contact of the door with the door sealing frame. With respect to the door sealing frame, it is adjustably constructed so as to maintain its outer surface for receiving knife edge constantly vertical. While the door is constructed so that it may not be subjected to thermal bend, the knife edge can be effectively held and adjusted by spring units; and the holding rods are mounted through bracket at regular intervals on the outer side of the side walls of the metallic door body. The knife edge is made broader and thinner than conventional ones.Type: GrantFiled: June 30, 1976Date of Patent: July 19, 1977Inventor: Konno Nagayoshi
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Patent number: 4033828Abstract: A coke oven door seal of the disclosure includes a metallic diaphragm plate of a vertically elongated rectangular shape and metallic seal members mounted on the edge portions of the plate in a manner that permits thermal expansion of the seal members along their lengths with respect to the plate edge portions. Preferably, each seal member has an integral channel shape, and first and second aligned sets of holes in the plate edge portions and the bases of the seal members receive attachment bolts for mounting the seal members with their bases engaged with an inner side of the diaphragm plate. One of the sets of holes is oversized along the length of the seal members to permit the thermal expansion thereof with respect to the plate. Best sealing is achieved when the oversized set of holes is in the seal member bases so that the attachment bolts do not move during seal member expansion.Type: GrantFiled: July 6, 1976Date of Patent: July 5, 1977Inventors: William K. Morrow, Walter B. Peterman, Jr.
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Patent number: 4033827Abstract: Apparatus for providing a good seal between sealing edges and sealing surfaces of a coke oven door includes an improved high temperature resistant, compressible and deformable sealing member between the sealing edge and sealing surface. The sealing member includes a layer of high temperature resistant compressible insulating material between an outer layer of steel foil and a perforated steel strip. In one embodiment there is a second layer of insulating material between the perforated steel strip and a second outer layer of steel foil.Type: GrantFiled: February 2, 1976Date of Patent: July 5, 1977Inventor: Herbert A. White, Jr.
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Patent number: 4032409Abstract: A sealing device for a coke oven door comprises first and second spaced apart metal sealing blades having respective substantially aligned sealing edges adapted to extend outwardly from the edge of the coke oven door. A metal spacer is mounted between the first and second sealing blades at a location spaced inwardly from the sealing edges and an elastic sealing strip is located between the two blades and has an outer elastic sealing edge which is substantially in alignment with or projects outwardly slightly beyond the blade sealing edges, and bears against the door frame.Type: GrantFiled: June 11, 1975Date of Patent: June 28, 1977Assignees: Firma Carl Still, Ruhrkohle AGInventors: Johannes Knappstein, Heinrich Tewes, Robert Woikowski
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Patent number: 4028193Abstract: Construction of coke oven door which is characterized in that there is mounted an adiabatic layer on the inner surface of a base plate of a metallic door body in addition to conventional adiabatic door plug, the inner surface of the adiabatic layer being provided with a guard plate. A frame-like knife edge is installed on the periphery of the guard plate, the knife edge being formed at suitable intervals with U-shaped slots on the base plate side. The knife edge is further formed with pairs of projections on its outer surface on both sides of the U-shaped slots. A plurality of adjustable spring units are equipped on the side walls of the metallic door body and a hook lever, whose upper end ring portion is fitted on the upper end of the spring units and whose lower end hook engages with the projections, is arranged alongside the spring units.Type: GrantFiled: April 19, 1976Date of Patent: June 7, 1977Assignee: Koritsu Kikaikogyo Co., Ltd.Inventor: Konno Nagayoshi
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Patent number: 4026768Abstract: A carriage movable along the coke side of a coke oven battery and carrying a coke guide, a door extractor, a frame cleaner and a door cleaner. These elements can be manipulated on the carriage so as to effect door extraction, coke pushing, door cleaning and frame cleaning in a minimum amount of time and without the necessity for moving the carriage itself along the coke oven battery while servicing any one coke oven chamber.Type: GrantFiled: June 2, 1975Date of Patent: May 31, 1977Assignee: Dr. C. Otto & Comp. G.m.b.H.Inventors: Hans Bahnsch, Hans-Jurgen Kwasnik
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Patent number: 4026769Abstract: A sealing frame includes a flexible metallic profiled bar having a bent transverse cross section formed by a longitudinally extending apex joining longitudinally extending arms. Attachment bolts extend through the bar at the apex and are threaded into a coke-oven door element. Tightening of the bolts stretches the bar by increasing the angle of the apex.Type: GrantFiled: May 29, 1975Date of Patent: May 31, 1977Assignee: Didier Engineering GmbHInventor: Franz Steimann
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Patent number: 4021309Abstract: A method and apparatus for the production of coke from coal by a dry distillation operation wherein the coking plant is provided with a computer unit that receives signals from the coal leveling mechanism, the door mechanism, the quenching car mechanism, and a signal value for the time required to achieve the coking of the coal. The computer prevents the opening of any given coking chamber until the minimum coking time has lapsed and the opening of the chamber and discharging and quenching of the coke is correlated to the actual operating conditions rushing at that time. If desired, the charging and emptying operations may be carried out on a completely automatic basis.Type: GrantFiled: October 21, 1974Date of Patent: May 3, 1977Assignee: Hoogovens Ijmuiden B.V.Inventors: Herman Radstake, Gerrit De Jong, Josephus Hendrikus Maria VAN DER Velden
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Patent number: 4016046Abstract: A coke oven door has a primary seal that includes a first metal knife edge in contact with a door jamb first sealing surface, and a secondary seal that includes a second metal knife edge in contact with a door jamb second sealing surface. The plenum or space between the sealing knife edges is maintained at super atmospheric pressure by flowing coke oven gas into the plenum. In a modification of the invention, the secondary seal includes a metal strip in contact with an elastic material; the plenum between the sealing surfaces being also pressurized above atmospheric pressure and purged of coke oven gas.Type: GrantFiled: October 15, 1974Date of Patent: April 5, 1977Assignee: Koppers Company, Inc.Inventors: Joseph Van Ackeren, Linwood G. Tucker
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Patent number: 4016045Abstract: A sealing arrangement for a door of a coke oven chamber includes a fluid channel around the door carrying gases from a coke oven chamber. Means is provided that subdivides the channel into separate fluid channelways and means is provided for conducting the gases from each channelway into an adjacent end heating flue in the heating walls defining the coke oven chamber.Type: GrantFiled: February 18, 1976Date of Patent: April 5, 1977Assignee: Koppers Company, Inc.Inventor: Joseph Van Ackeren
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Patent number: 4003802Abstract: A coke guide machine includes a shuttle car carried by rails on a coke bench for a battery of coke ovens. Movable along the shuttle car is a carriage having two support stations that are rotatable about a common vertical axis. The support stations include scissor arms that form extendible support devices, one of which carries a handling device for a coke oven door and the other carries a device adapted to clean exposed sealing surfaces of an emptied coking chamber. The carriage also supports a coke guide including an extendible section to bridge an open passageway wherein an inspection car moves along the coke bench between the shuttle car and the coke ovens. A door cleaning machine is positioned in a stationary manner on the shuttle car to clean a coke oven door carried to it by the door handling device after 180.degree.Type: GrantFiled: February 3, 1975Date of Patent: January 18, 1977Assignee: Dr. C. Otto & Comp. G.m.b.H.Inventor: Erich E. Pries
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Patent number: 4002537Abstract: An improved method and apparatus for by-product coke oven operation wherein the problems of pollution caused by gases leaking out of the oven during the coking cycle are eliminated by providing an improved coke oven door using the metal-to-metal contact principle. Because of thermal conditions the distortion of the jambs and the distortion of the doors themselves takes place thus making the sealing of coke oven doors very difficult; this in particular is very serious with respect to high ovens. This distortion being of such form that the distortion of the jamb occurs in the opposite direction of the distortion of the oven door. This invention compensates for such distortion and makes possible the proper fit up of the door to a particular jamb irrespective of the degree of distortion.Type: GrantFiled: September 30, 1974Date of Patent: January 11, 1977Inventor: Albert Calderon
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Patent number: 3996110Abstract: An improved coke oven leveler door which is constructed from a mild steel plate having substantially flat inner and outer faces with the inner face adapted to selectively close a leveler opening included in the coke oven main door. Support members are rigidly affixed to the outer face of the door and disposed to extend generally radially outward from the central portion of the outer face. Means are also included on the outer face for mounting the door in operative communication with biasing means to place a continuous biasing force against the door at least when it is in a closed position. The inner face of the door includes knife-edge like sealing means protruding outwardly therefrom for sealing the door when it is in a closed position. The configuration of the knife-edge sealing means is such to enhance leveler door sealing during a coking operation.Type: GrantFiled: September 16, 1975Date of Patent: December 7, 1976Inventor: Patsie Carmen Campana
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Patent number: 3990950Abstract: A leveler door for sealing the leveler opening in a coke oven door; the oven door of the type having leveler door mounting and latching apparatus associated therewith. The leveler door comprising a flexible closure member possessing spring-like properties at elevated temperatures and having a generally concave shape, terminating in a flexible sealing edge at its outer periphery. The sealing edge is formed at an angle of less than 90.degree. relative to the plane of the leveler opening. Means for securing the closure member to the mounting and latching apparatus of the coke oven door are disclosed, whereby the compressive closing force supplied by the mounting and latching apparatus causes the concave closure member to move toward the leveler opening causing the sealing edge to concurrently flex outwardly from the leveler opening while sealably engaging the coke oven door adjacent the leveler opening.Type: GrantFiled: August 22, 1975Date of Patent: November 9, 1976Assignee: Bloom Engineering Company, Inc.Inventor: Hugh B. Carr
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Patent number: 3985627Abstract: A device for magnetic lifting and removal of the feed opening cover of a coking chamber oven from the charging region of said oven comprises a magnet carried by a gripping unit and operatively connected with a crank drive for rotating said cover back and forth in said gripping unit, said magnet further being operatively connected with a displaceable slide means through the intermediary of a guide rail for guiding the movement of the slide means, the rail having horizontal and vertical branches, actuation of a drive means for said slide means first causes lifting of said cover and then lateral displacement of said slide means with said cover.Type: GrantFiled: April 12, 1974Date of Patent: October 12, 1976Assignee: Klockner-Humboldt-Deutz AktiengesellschaftInventors: Gunter Gebhardt, Josef Peters
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Patent number: 3984310Abstract: An improved by-product coke oven wherein the ends are heated through the doors or jambs to prevent condensation of the tar and the deposit of carbon and coal. This improved coke oven possesses improved sealing features and minimizes pollution during coking and during the extraction of the doors.Type: GrantFiled: October 29, 1974Date of Patent: October 5, 1976Inventor: Albert Calderon
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Patent number: 3977125Abstract: A device for sealing a steel door of a coke oven includes a ring-shaped steel packing fitted over an outer surface of the steel door so as to contact a side wall of the coke oven when the steel door is closed, a packing retainer fitted over the outer surface of the steel packing and provided with a ring-shaped groove opened toward the side wall, a ring-shaped packing assembly fitted into the groove so as to press against the side wall and a holder for movably holding the steel packing and the packing retainer. The packing assembly extends closer to the side wall of the coke oven than the steel packing.Type: GrantFiled: August 2, 1974Date of Patent: August 31, 1976Assignee: Nippon Oil Seal Industry Co., Ltd.Inventor: Osamu Sudo
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Patent number: 3974038Abstract: A coke oven door, having a sealing ring that coacts with a plurality of spring plungers, is provided with a plurality of equalizing pads located between the top and bottom latches to ensure that the sealing ring is seated at these locations. Also the sealing ring is installed in slots in the door frame which are open at both ends.Type: GrantFiled: December 22, 1971Date of Patent: August 10, 1976Assignee: Koppers Company, Inc.Inventor: Linwood G. Tucker
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Patent number: 3957591Abstract: A coking oven has an upright wall formed with an opening which is normally closed by a door past which noxious gases escape at least at times. Outwardly adjacent the opening and the wall are formed one or more upright channels having open ends located below and above the level of the opening, respectively, and being so positioned that escaping noxious gases can enter into this channel or these channels. Arranged adjacent the upper open end or ends is a suction conduit provided with apertures through which the gases can be drawn from the channel or channels to be conveyed in the conduit.Type: GrantFiled: May 20, 1974Date of Patent: May 18, 1976Assignee: Hartung, Kuhn & Co., Maschinenfabrik GmbHInventor: Johann G. Riecker
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Patent number: 3952454Abstract: A device for sealing a door of a coke oven includes a ring-shaped steel packing fitted over an outer surface of the door so as to contact a side wall of the coke oven when the door is closed, a packing retainer fitted over the outer surface of the steel packing and provided with a ring-shaped groove opened toward the side wall and a ring-shaped packing assembly fitted into the groove so as to press against the side wall. The packing assembly extends closer to the side wall of the coke oven than the steel packing.Type: GrantFiled: August 2, 1974Date of Patent: April 27, 1976Assignee: Nippon Oil Seal Industry Co., Ltd.Inventor: Osamu Sudo
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Patent number: 3948397Abstract: A coke oven door lifter for a coke oven door, having a horizontal support bar and a spring biased locking bar, includes a lifter housing or frame having a vertical trackway therein. A movable member is guided in the trackway for vertical upward and downward movement and it carries a support arm which is engageable with the horizontal support bar of the coke oven door to lift it when the movable member is moved upwardly. A locking bar release member comprises a piston displaceable in a fluid pressure controlled cylinder which is displaced after the movable member is moved upwardly to contact and disengage the locking bar. The movable member is moved by a piston movable in a fluid pressure cylinder after the lifter housing or frame is moved into association with the door.Type: GrantFiled: March 13, 1974Date of Patent: April 6, 1976Inventor: Takatoshi Ikio
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Patent number: 3933598Abstract: In a coke oven, a coke discharge opening communicating with the coking chamber is closed by a door which carries an angularly-shaped packing strip having an extended edge surface for engaging a door frame. The packing strip is adjustably supported by clamping plates attached to the door. The extended edge surface of the packing strip is resiliently urged at spaced locations about the periphery of the door by means of a spring-biased plunger carried by guide plates that are adjustably positioned on the door. The disclosure additionally provides stop plates at opposite sides of the door frame for engagement with adjustable bolts supported by the door for adjustably locating the door relative to the door frame.Type: GrantFiled: May 1, 1973Date of Patent: January 20, 1976Assignee: Dr. C. Otto & Comp. G.m.b.H.Inventor: Erich E. Pries