Patents by Inventor Larry L. Steingraber

Larry L. Steingraber 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).

  • Playground spring device
    Patent number: 5415590
    Abstract: An elastomeric spring device for use with playground equipment which substantially reduces the risk of any pinching to the user. The spring device has a hollow dome configuration with mounting members at each end. The dome has a smaller diameter upper portion with one of the mounting members being coextensive therewith. The spring device is particularly suited for use with rock and ride and see-saw playground equipment.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: May 16, 1995
    Assignee: BCI Burke Company, Inc.
    Inventors: Larry L. Steingraber, Ahmet Kartal