Patents by Inventor Hans Pfrotzschner

Hans Pfrotzschner 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: 4345129
    Abstract: An electric switch having contact elements designed in the form of contact pins is disclosed. Contact pins and flat springs are arranged in units, each unit having a contact pin and an associated flat spring, and each unit extending in the make/break direction of the switch. Each contact pin-flat spring unit is held between a contact carrier and a cage. The cage may be held in place by outer ends of the flat springs. A tubular conductor or a contact blade can be used as a mating contact. The mating contact is in electrical connection with the contact pins when the switch is in the make position. The individual contact elements can be easily replaced, and a standard design contact element can be used in switches of various sizes and types. A switch according to the present invention is particularly suitable for use with large surge currents.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: August 17, 1982
    Assignee: BBC Brown, Boveri & Company, Ltd.
    Inventors: Franz Czech, Gerhard Mauthe, Hans Pfrotzschner