1
Kurt Reeh, Hans Christoph Jerofke, Friedrich Kramer: Epoxy-concrete coated pipe. Buderus Aktiengesellschaft, Karl F Ross, November 30, 1982: US04361336 (13 worldwide citation)

A cast-iron or steel pipe is coated with a two-component epoxy resin and then, prior to curing of the resin, is coated with a relatively thick layer of hydraulic concrete. A layer of a water-impervious bitumen is then applied over the concrete. The concrete layer does not extend over the spigot in a ...


2
Jurgen Schreiber: Apparatus for simultaneously grinding inner and outer workpiece surfaces. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, February 5, 1985: US04497138 (12 worldwide citation)

A grinding apparatus comprises a base, a chuck on the base for supporting a workpiece for rotation about an axis, a first on the base to one axial side of the chuck for grinding an internal surface of the workpiece in the chuck, a second grinder on the base for grinding an external surface of the wo ...


3
Wilfried Durth: Method of selectively operating a cooking apparatus with circulating heated air or water vapor. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, October 20, 1987: US04701334 (12 worldwide citation)

The conversion operation of a cooking apparatus which is initially operated using heated air at approximately 250.degree. C., to an operation using water vapor is made possible in a short period of time and without danger by lowering the temperature to approximately 100.degree. C. in the cooking spa ...


4
Hartmut Stiegler: Muffle oven for heating foodstuffs. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, April 23, 1985: US04512327 (11 worldwide citation)

A muffle oven for the heating of foodstuffs has a closed housing with a treatment chamber separated by a perforated partition from an air-circulating compartment which forms rear and lateral air spaces surrounding that chamber on three sides. A radial blower, driven by an external motor located at a ...


5
Paul Heimbach, Peter Goebel, Franz Gruber: Method of and apparatus for operating a monovalent alternative absorption heating installation. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, October 18, 1983: US04410134 (10 worldwide citation)

A method of operating a monovalent alternative absorption heating plant an apparatus operated by this method in which above a predetermined ambient temperature, the system is operated in a heat pump mode and at lower temperatures, in a direct heating mode. The system uses a coolant (refrigerant) cir ...


6
Burno Heinzl, Herbert Frowein, Hartmut Stiegler, Joachim Wurz, Horst Schmidt, Willi Huttel, Karl Heinz Schmitz: Manufacture of tray holder from single molded article. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, October 14, 1986: US04616754 (7 worldwide citation)

An article for mixing a tray holder has a generally rectangular side panel having upper and lower edges and inner and outer faces, a generally rectangular roof panel projecting generally perpendicular from the inner face of the side panel along the upper edge thereof, and a generally rectangular flo ...


7
Georg Becker, Herbert Basilowski: Method of shaping workpieces especially forming undercut archimedean spirals. Buderus Aktiengesellschaft, Herbert Dubno, March 21, 1989: US04813188 (6 worldwide citation)

Hitherto mechanical lever systems and cams were used to effect the necessary relative movements between the workpiece and the grinding disc. In order to attain a higher production rate at improved quality, it is proposed to use electronic means for shaping the profile of a tool. The generating profi ...


8
Wilfried Durth: Method of and apparatus for selectively operating a cooking apparatus with circulating heated air or water vapor. Buderus Aktiengesellschaft, Herbert Dubno, January 31, 1989: US04800806 (5 worldwide citation)

The conversion operation of a cooking apparatus which is initially operated using heated air at approximately 250.degree. C. to an operation using water vapor is made possible in a short period of time and without danger by lowering the temperature to approximately 100.degree. C. in the cooking spac ...


9
Kurt Feuring: Process for producing castings. Buderus Aktiengesellschaft, Karl F Ross, Herbert Dubno, September 22, 1987: US04694879 (3 worldwide citation)

A process for production of castings is provided employing patterns combining gasifiable pattern parts, for the creation of nonconforming contours, with reusable pattern parts. After molding, only the reusable pattern parts are removed from the mold, while the gasifiable pattern parts are destroyed ...


10
Gerhard Debus, Erwin Hof, Gunter Herrmann: Solid fuel stove utilizable as a fireplace. Buderus Aktiengesellschaft, Karl F Ross, May 18, 1982: US04329975 (1 worldwide citation)

A so-called stack stove, especially for the burning of solid fuels and particularly wood has a hood or apron extending downwardly and outwardly along the upper portion of at least its front above the opening into the combustion chamber. A window door is mounted so as to be shiftable upwardly into th ...



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