Patents by Inventor Jan N. Meinzer

Jan N. Meinzer 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).

  • Impact energy absorber
    Patent number: 4407484
    Abstract: An impact energy attenuator has a housing in front of a roadway abutment. A leading nose piece and a number of impact walls can move toward and away from the abutment. Coil springs urge the nose piece, the several impact walls, and the housing apart. A cable attached to the nose piece is wound around a drum and is spring tensioned to rotate the drum in a take-up direction. Rotation of the drum in the opposite direction is inhibited by a hydraulic pump discharging through a restricted orifice.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: October 4, 1983
    Assignee: Meinco Mfg. Co.
    Inventor: Jan N. Meinzer