Patents Assigned to Raymond Kaiser Engineers, Inc.
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Patent number: 4596197Abstract: A door construction for the door frame of a coking oven having a seal comprising a sheet metal diaphragm with a perimeter flange which engages and forms a seal with respect to a sealing surface of the oven door frame. Threaded studs each have an end secured to the diaphragm and extend through holes in a rigid door plate. Nuts have threaded engagement with each stud and serve to adjustably fix each stud to the door plate whereby each stud may be adjusted to apply forces to the diaphragm in directions toward or away from the door plate.Type: GrantFiled: January 10, 1985Date of Patent: June 24, 1986Assignee: Raymond Kaiser Engineers Inc.Inventor: Raymond C. Kinzler
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Patent number: 4511264Abstract: A probe for measuring temperatures in a hot gaseous medium such as the gases inside the shaft of a blast furnace. A first tubular member extends from a base structure such as a blast furnace wall into the gaseous medium. Successively smaller, second and third tubular members are concentrically positioned inside this exterior tubular member. Preferably, an exterior protective member also surrounds the first tubular member. A refractory material is interposed between the exterior protective member and the first tubular member to minimize temperature fluctuations in the body of the probe itself. Thermocouple leads extend longitudinally in an air space between the second and third tubular members and then protrude to the exterior of the probe. A forward fluid coolant passageway is formed inside the third tubular member.Type: GrantFiled: April 11, 1983Date of Patent: April 16, 1985Assignee: Raymond Kaiser Engineers Inc.Inventors: Robert M. Bucha, Albert J. Dzermejko, James G. Stuart
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Patent number: 4510959Abstract: A header or other pipe under pressure which is blanked at its terminal end by a closure plate is extended without the need of a shutdown or the construction of bypass piping. In a series of steps in the method disclosed, alternate bolts in the ring of bolts holding the closure plate to the annular flange of the existing pipe are variously repositioned or replaced to accommodate the construction of the extension while maintaining an adequate seal to prevent the escape of the pressurized fluid in the pipe. A structure which is installed as a product of this method and an apparatus used in this installation are also disclosed.Type: GrantFiled: February 21, 1984Date of Patent: April 16, 1985Assignee: Raymond Kaiser Engineers Inc.Inventor: Ward F. Gidick
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Patent number: 4489747Abstract: A header or other pipe under pressure which is blanked at its terminal end by a closure plate is extended without the need of a shutdown or the construction of bypass piping. In a series of steps in the method disclosed, alternate bolts in the ring of bolts holding the closure plate to the annular flange of the existing pipe are variously repositioned or replaced to accomodate the construction of the extension while maintaining an adequate seal to prevent the escape of the pressurized fluid in the pipe. A structure which is installed as a product of this method and an apparatus used in this installation are also disclosed.Type: GrantFiled: May 6, 1982Date of Patent: December 25, 1984Assignee: Raymond Kaiser Engineers Inc.Inventor: Ward F. Gidick
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Patent number: 4486138Abstract: The invention comprises a plurality of improvements in pusher ram construction for use in coke ovens and the like. These improvements include: (1) two separate "heat spring" arrangements for absorbing both heat and mechanically induced stress in the web portion of a pusher ram, while maintaining desired rigidity; (2) five different constructions for relieving stress developed in welds in pusher ram beam members and/or welded connections between the web portion of a pusher ram and adjacent beam members; (3) two unique girder assembly arrangements to facilitate component replacement; (4) an improved girder web construction for accommodating decarbonizer piping or the like; (5) several useful advancements in ram head design and construction; (6) special heat shield applications for pusher rams; and (7) improvements in ram girder "bull nose" construction.Type: GrantFiled: August 26, 1982Date of Patent: December 4, 1984Assignee: Raymond Kaiser Engineers Inc.Inventor: Jiri Hendrych
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Patent number: 4486139Abstract: The invention comprises a plurality of improvements in pusher ram construction for use in coke ovens and the like. These improvements include: (1) two separate "heat spring" arrangements for absorbing both heat and mechanically induced stress in the web portion of a pusher ram, while maintaining desired rigidity; (2) five different constructions for relieving stress developed in welds in pusher ram beam members and/or welded connections between the web portion of a pusher ram and adjacent beam members; (3) two unique girder assembly arrangements to facilitate component replacement; (4) an improved girder web construction for accommodating decarbonizer piping or the like; (5) several useful advancements in ram head design and construction; (6) special heat shield applications for pusher rams; and (7) improvements in ram girder "bull nose" construction.Type: GrantFiled: August 26, 1982Date of Patent: December 4, 1984Assignee: Raymond Kaiser Engineers Inc.Inventor: Jiri Hendrych
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Patent number: 4478575Abstract: A blast furnace stove having a hot blast outlet which is configured in a particular elliptical-shaped so that all the bricks in its peripheral refractory reinforcing wall are substantially identical in shape and dimension. The center line of this outlet passes through the center of the blast furnace stove instead of through the center of the combustion chamber. Preferably, the burner inlet is also configured in the shape disclosed by the present invention.Type: GrantFiled: June 30, 1983Date of Patent: October 23, 1984Assignee: Raymond Kaiser Engineers Inc.Inventor: Jack Hyde
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Patent number: 4475989Abstract: A coke oven charging hole cover which includes a cylindrical wall section and a lower horizontal layer of a cast-in-place castable refractory material which is relatively dense and which contains a random dispersion of fine stainless steel fibers or similar fibers. A layer of an insulating material such as insulation board or a lightweight castable insulating refractory material is superimposed over the dense refractory material to enhance the overall insulating effect while avoiding damage due to carbon impregnation. A means for holding the refractory in the wall section such as a wire mesh which is fixed to the wall section and cast into the lower layer of the refractory is also provided.Type: GrantFiled: March 28, 1983Date of Patent: October 9, 1984Assignee: Raymond Kaiser Engineers Inc.Inventors: George R. Cain, Stanley T. Sczerba
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Patent number: 4416688Abstract: The process for beneficiating iron ore, particularly high phosphorous iron ore, by controlled selective solid-state reduction in which the resultant sponge iron is produced in a malleable condition followed by ultrafine preferential grinding to form flake powder of the sponge iron and produce finely divided oxide gangue, including the phosphate bearing materials, and separation of said flake powder and finely divided gangue by conventional concentration techniques to obtain a high iron flake powder concentrate.Type: GrantFiled: January 28, 1982Date of Patent: November 22, 1983Assignee: Raymond Kaiser Engineers, Inc.Inventor: Richard B. Greenwalt