Patents by Inventor Herbert Geisel

Herbert Geisel 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).

  • Method of heating of at least two elongated tubular metallic objects
    Patent number: 4147569
    Abstract: A process for heating at least two metal pipes wherein each pipe is individually preheated in response to sensors detecting its initial temperature and wall thickness. The pipe then passes through a continuous heater which applies an equal amount of energy to each portion of the pipe, after which each pipe emerges having a predetermined temperature independent of both its initial temperature and the wall thickness.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: April 3, 1979
    Assignee: AEG-Elotherm, GmbH
    Inventors: Friedhelm Reinke, Friedhelm Emde, Herbert Geisel, Rolf Gies, Friedrich Muller-Axt, Klaus Lange, Manfred Schoenen
  • Pipe and process for producing a welded and quench hardened steel
    Patent number: 3976520
    Abstract: A method for producing a welded and quench hardened steel pipe and pipe whereby the weld seam running spirally or longitudinally along the pipe length has a lower austenization temperature than the pipe and/or a higher electrical resistance. The ratio of the pipe to seam resistance is preferably greater than one half and the whole of the square of the ratio between pipe wall thickness and mean seam thickness. The seam preferably includes amounts of C, Si, and Mn in the same percentage as the pipe plus nickel between 2-6%.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: August 24, 1976
    Assignee: AEG Elotherm G.m.b.H.
    Inventors: Friedhelm Reinke, Hermann Voss, Herbert Geisel