Patents by Inventor Franz Hirschmanner

Franz Hirschmanner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130161139
    Abstract: A damping cylinder (100) is provided. The damping cylinder (100) comprises a housing (101) and a piston cylinder (201) located within the housing (101). A piston rod (103) extends from the housing (101) and the piston cylinder (201). The damping cylinder (100) can also include a piston (203) coupled to the piston rod (103). The piston (203) is movable within the piston cylinder (201) and separates the piston cylinder (201) into a first fluid chamber (210) and a second fluid chamber (211). The damping cylinder (100) can further include a damping module (102) in fluid communication with the first and second fluid chambers (210, 211). The damping module (102) includes a pressure relief valve (221) configured to provide a first damping level and a directional control valve (222) configured to provide at least a second damping level.
    Type: Application
    Filed: September 24, 2011
    Publication date: June 27, 2013
    Inventors: Dieter Immler, Franz Hirschmann, Wolfgang Sedlacek
  • Patent number: 5035279
    Abstract: The apparatus utilizes twin casting drums and a cast-on site removed from a sump formed between the two drums. The apparatus forms a completely uniform continuous metal sheet without a molten center when the sheet emerges from between the casting drums. Complete solidification of the metal sheet does not take place on a single casting drum, allowing for sheeting of substantially greater thickness to be uniformly cast.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: July 30, 1991
    Assignee: Voest-Alpine Industrieanlagenbau Gesellschaft m.b.H
    Inventors: Hermann Rametsteiner, Karl Schwaha, Franz Hirschmanner, Heinz Bramerdorfer
  • Patent number: 4960164
    Abstract: When continuously casting a thin strip, metal melt is cast onto the drum surface of a first casting drum. A casting gap is formed by a second casting drum spaced apart with its drum surface from the first casting drum by the thickness of the strip. Strand shells form on the drum surfaces of the first and second casting drums. In order to enable the casting of strips having different thicknesses, a sump is formed at a distance from the cast-on site of metal melt on the drum surface of the first casting drum. Between the sump and the cast-on site on the drum surface of the first casting drum, a strand shell of a predetermied thickness is formed. The casting gap is adjusted in a position on the circumference of the first casting drum such that the two strand shells formed on the drum surfaces in terms of their maximum thickness, in total, correspond at least the thickness of the cast strip.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: October 2, 1990
    Assignee: Voest-Alpine Industrieanlagenbau Gesellschaft m.b.h.
    Inventors: Hermann Rametsteiner, Karl Schwaha, Franz Hirschmanner, Heinz Bramerdorfer
  • Patent number: 4703640
    Abstract: In a coiler-furnace unit comprising a coiler for coiling a metal strip, a sleeve (2), which comprises heating means (3) for heating the coiler mandrel (1) and is adapted to be axially displaced over the coiler mandrel (1), and a heat-insulating shell (7) associated with said sleeve, a uniform heating of the coiled strip and a low dissipation of heat are ensured in that the heat-insulating shell (7) is mounted to be axially displaceable toward the coiler mandrel (1) relative to the sleeve (2) and is provided with a passage slot (18) for receiving the metal strip.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: November 3, 1987
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Rudolf Buchegger, Franz Hirschmanner, Peter Heyer
  • Patent number: 4611988
    Abstract: For a heating of a coil of strip with hot gas without an increased formation of scale, a coiler-furnace unit comprising a heat-insulating housing, a coiler mandrel disposed in said housing, and a heating tube which is adapted to surround the coiler mandrel and to heat the latter, is characterized in that the heating tube consists of a radiant inner tube, which is enclosed by a shell, at least one hot gas passage is defined between the inner tube and the shell, the heat-insulating housing is double-walled to define at least one flow passage, and the outlet opening of the hot gas passage of the heating tube communicates with an inlet opening of the flow passage of the heat-insulating housing in at least one axial position of the heating tube.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: September 16, 1986
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Rudolf Buchegger, Franz Hirschmanner
  • Patent number: 4608014
    Abstract: A coiler-furnace unit comprises a coiler having a heatable coiler mandrel, which is disposed in a heat insulating housing, and strip guiding means comprising pressure applying rollers for engaging a strip to be coiled at least two cylindrical guide shoes, which extend around and are engageable with the coiler mandrel. In order to avoid heat losses, at least one heat insulating shielding element is provided, which is adapted to be introduced into the annular clearance defined on one side by the guide shoes when they have been retracted from the coiler mandrel and by the pressure-applying rollers and on the other side by the coiler mandrel or the strip coiled on said mandrel.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: August 26, 1986
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Rudolf Buchegger, Franz Hirschmanner
  • Patent number: 4572453
    Abstract: A coiler comprises a rotatably mounted coiler shaft, adapted to be driven, and a hollow reel, non-rotatably connected to the coiler shaft and containing a mechanism for expanding the coil. The expanding mechanism is adapted to be actuated by an actuator and comprises radially adjustable pressure-applying members, adapted to protrude through apertures in the reel at its periphery. To ensure that the coiler will be operable even under high loads, the pressure-applying members are spaced along the reel and mounted on two diamatically expanding opposite members, operatively connected to the actuating mechanism. The expanding members are pivoted on diametrically opposite axes which extend parallel to the axis of the coiler shaft.
    Type: Grant
    Filed: September 5, 1984
    Date of Patent: February 25, 1986
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventor: Franz Hirschmanner
  • Patent number: 4554812
    Abstract: A plant for hot-rolling strip or plate stock comprises roller conveyors for conveying the stock to be rolled, which is guided on the roller conveyors by side guards, which are provided on the roller conveyors near their side edges and adjustable transversely to the direction of travel on the roller conveyors. To ensure that on such roller conveyor provided with the side guards the cooling of the stock to be rolled will be minimized, the roller conveyors are provided with coverings, which are supported by the side guards and movable in unison with at least one of the side guards.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: November 26, 1985
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Franz Hirschmanner, Rudolf Buchegger, Franz Brettbacher
  • Patent number: 4528434
    Abstract: In a coiler-furnace unit comprising a coiler having a coiler mandrel arranged for carrying a strip wound on the mandrel, the improvement comprises a heating device arranged for selective movement between a first position wherein the heating device surrounds and heats the coiler mandrel, and a second position wherein the heating device is removed from the coiler mandrel. The heated coiler mandrel heats the strip wound thereon in the second position of the heating device.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: July 9, 1985
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Franz Hirschmanner, Ernst Rom
  • Patent number: 4465912
    Abstract: A coiler-furnace comprises a heat-shielding hood and a coiler having a coiler mandrel for coiling a hot-rolled strip. The mandrel incorporates an electrically energizable heating winding comprising a plurality of inductor coils for heating the coiler strip.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: August 14, 1984
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Franz Brettbacher, Karl Moshammer, Ernst Rom, Franz Hirschmanner
  • Patent number: 4442690
    Abstract: A coiler-furnace combination comprises a horizontal coiler, a strip guide which comprises two pressure rollers for forcing the strip against the coil and two part-cylindrical guide segments, one of which precedes the other in the winding sense and adjoins a strip transfer bridge for transferring the strip to and from the coiler, and a strip lifter. To simplify the structure, the two guide segments are secured to arms which pivoted on pivots disposed outside the heat-shielding hood and parallel to the mandrel. The strip lifter is constituted by the delivery edge of that guide segment which succeeds the other in the coiling sense. The strip transfer bridge consists of a roller conveyor and at its end facing the mandrel has a pressure roller for forcing the strip against the coil.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: April 17, 1984
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Franz Hirschmanner, Ernst Rom