Patents by Inventor Hans Harder

Hans Harder 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).

  • Patent number: 6021553
    Abstract: A hand-held blind rivet riveting tool includes a housing and a drawing element mounted within the housing. The drawing element is movable in a drawing direction relative to the housing. A first grip lever is pivotable about a first pivot point relative to the housing. A second grip lever is connected to the housing. A connecting rod mechanism is disposed between the first grip lever and the drawing element. The connecting rod mechanism has a variable transmission ratio.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: February 8, 2000
    Assignee: Gesipa Blindniettechnik GmbH
    Inventors: Walter Bieber, Hans Harder, Lothar Wille, Richard Gossmann
  • Patent number: 4243391
    Abstract: The invention relates to a process for bleaching washed textiles in the tumbler of a mechanical laundry drier with an aqueous solution of hydrogen peroxide in an amount such that the residual moisture adhering to the textile material before drying contains 0.05 to 1 gm/liter of hydrogen peroxide, the drying being conducted so that the moist textile material assumes a temperature of at least 50.degree. C., preferably 55.degree. C. to 80.degree. C., for a period of at least 10 to 60 minutes. An addition of quaternary ammonium salts improves the bleach result and the softness of the textile material. An addition of a powdered bleaching activator of the N-acyl type also improves the bleach results.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: January 6, 1981
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Rolf Puchta, Karl Schwadtke, Hans Harder, Rudolf Weber