Patents by Inventor Elerth Persson

Elerth Persson 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).

  • Sound and vibration damper
    Patent number: 5020766
    Abstract: A device for damping vibrations, shocks, blows and noise in hydraulic lines. Hydraulic lines with varying pressure or pulsating flow are passed ducts in a heavy block. The ducts in the block have a greater diameter than the hydraulic lines and the ducts are angled inside the blocks.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: June 4, 1991
    Inventor: Elerth Persson