Patents by Inventor Karl E. Mattsson

Karl E. Mattsson 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).

  • Cylinder with two-step movement
    Patent number: 4538506
    Abstract: In a cylinder with two-step movement there is in a housing (7) a first piston (6) which slides in contact with the inside of the housing. A second piston (10), which supports a piston rod (11), which moves sealingly through a first end-piece (8) also slides against the inside of the housing. In the second end-piece (9) of the housing, there is a pressure medium tube (12) passing through the first piston (6) and which extends with its end distant from the second end-piece (9) into, and is guided against the inside of the tubular piston rod (11).
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: September 3, 1985
    Assignee: AB Volvo
    Inventor: Karl E. Mattsson