Patents by Inventor Stig Teodor Heinonen

Stig Teodor Heinonen 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).

  • Plug contact device intended for mounting on circuit cards
    Patent number: 4042289
    Abstract: In a plug contact to be mounted on a printed circuit board, separate flat contact springs are mounted in a plurality of parallel grooves on an insulating body. To hold the contact springs each groove is provided with projections and the contact spring is provided with mating notches. At the bottom of the front end of the projections there is a slot to receive the contact spring while a shoulder is arranged at the back end of the projections. When mounting, the contact spring is guided by the notches and projections and is pushed backwards in the groove until the forward edge of the notch is locked in the slit and the backward edge snaps over the shoulder.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: August 16, 1977
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Stig Teodor Heinonen, Gustav Gunnar Johansson