Patents by Inventor Karl-Heinz Niederhofer

Karl-Heinz Niederhofer 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: 4937858
    Abstract: A handset for telephones and the like has electro-acoustical capsules for hearing and speaking, mounted between an upper housing shell and a lower housing shell of the handset. Each of the capsules is connected to the handset cord by a pair of leads received in cutting clamp connections arranged on the rear sides of the hearing and speaking capsules, the opposed housing shells having projections pushing the leads into the cutting clamps. Preferably, the leads are mounted on a foil having openings for the cutting clamps and the projections, and also openings for guide pins, whereby the leads are guided into the cutting clamps when the upper and lower housing shells are brought together on the leads.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: June 26, 1990
    Assignee: Telenorma Telefonbau und Normalzeit GmbH
    Inventors: Wolfgang Girscher, Karl-Heinz Niederhofer
  • Patent number: 4782522
    Abstract: A terminal of a telephone switchboard installation with one dialing and one service and/or input keyboard and one or more indicator device(s) and a cradle for the hand set. The terminal includes, on the upper side of the terminal a sliding part, which is formed by the upper side which accommodates the keyboards and sometimes includes an indicator device. In one position, the sliding part operationalizes an additional keyboard or indicator device which is located beneath it. This additional keyboard may be designed as a targeted dialing key set, an alpha-numerical input keyboard, etc., and in addition, the keyboard may be replaced with a bank of lamps indicating lines in use.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: November 1, 1988
    Assignee: Telenorma Telefonbau und Normalzeit GmbH
    Inventors: Dieter Kramer, Gerhard Sussner, Wolfgang Girscher, Karl-Heinz Niederhofer, Werner Beck, Bernd Ogorczyk