Patents by Inventor Karl Sievert Forsberg

Karl Sievert Forsberg 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).

  • Contact assembly and mounting structure for cross bar selector switch
    Patent number: 4065652
    Abstract: Arrangement in a selector, especially in a crossbar selector, comprising a number of contact spring sets arranged parallel to each other in a contact frame, wherein the contact spring sets, when operated, make contact with a contact multiple common to the sets. The contact springs are provided with elongated transverse contact surfaces and the contact multiple is made up of rod-shaped contact elements which are transversally attached to conductors. The conductors run across the contact frame parallel to the contact surfaces of the contact springs.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: December 27, 1977
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Bror Ludvig Lundkvist, Sven-Erik Lindeberg, Karl Sievert Forsberg