Patents by Inventor Willi Kitzhoefer

Willi Kitzhoefer 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: 6458484
    Abstract: In order to be able to produce prismatic, unsealed nickel-cadmium batteries without limiting the amount of electrolyte, the invention proposes the manufacture of an electrode system for nicad batteries under at least partial utilization of fibe- structure electrodes, for which purpose positive and negative lamellar electrodes are produced and, with separator material interlayered, stacked in alternating fashion in a defined number to form an electrode assembly. The respective equidirectional electrodes are mutually connected by means of connecting straps; the electrode assembly is pressed and positionally locked between mechanical clamping elements into a unitized, coplanar, undeformable block, under simultaneous compression of the separator material interlayered between the electrodes.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: October 1, 2002
    Assignee: Hoppecke Batterie Systeme GmbH
    Inventors: Detlef Ohms, Willi Kitzhöfer, Uwe Schaffrath, Gabor Benczur-Urmössy
  • Patent number: 4755441
    Abstract: A fiber structure-electrode framework of metallized plastic fibers with reinforced edge and with welded-on current-conducting lug, in which the current-conducting lug is provided with one or several steps on the side abutting at the fiber framework. The electrode framework is so connected with the current-conducting lug that the reinforced edge of the electrode framework is located inside of an area whose boundaries lie at the distance of double the lug thickness on both sides of the step. The fiber structure-electrode framework which is compressed in the stepped area reaches its full thickness continuously approximately to the end of the step.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: July 5, 1988
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Otwin Imhof, Claus Schneider, Willi Kitzhoefer