Patents Assigned to Hand Widmaier Fabrik Fur Apparate Der Fernmelde-und Feinwerktechnik
  • Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys
    Patent number: 4649246
    Abstract: A keyboard for initiating switching functions or switching signals. Synchronizing pins coupled to four key members at the mutually adjacent crossing between them cause actuation of contact sets upon depression of the keyboard surface above each synchronizing pin. Actuation of at least two contact sets are necessary to initiate a switching function corresponding to the keyboard symbol at the position of surface depression. A light may be employed to visually indicate the symbol actuated.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: March 10, 1987
    Assignee: Hand Widmaier Fabrik fur Apparate der Fernmelde -und Feinwerktechnik
    Inventors: Theobald Schmid, Horst Widmaier, Friedrich Wolf
  • Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys
    Patent number: 4531033
    Abstract: A keyboard for initiating switching functions or switching signals. Synchronizing pins coupled to four key members at the mutually adjacent crossing between them cause actuation of contact sets upon depression of the keyboard surface above each synchronizing pin. Actuation of at least two contact sets are necessary to initiate a switching function corresponding to the keyboard symbol at the position of surface depression. A light may be employed to visually indicate the symbol actuated.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: July 23, 1985
    Assignee: Hand Widmaier Fabrik Fur Apparate Der Fernmelde-und Feinwerktechnik
    Inventors: Theobald Schmid, Horst Widmaier, Friedrich Wolf