Patents by Inventor Steven Erdelyan

Steven Erdelyan 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).

  • Lockable suspension system for a scraper
    Patent number: 3969835
    Abstract: A lockable suspension system for a scraper which has a tractor and a bowl pivotally connected to each other and pivotally supported by wheels driven by an engine, and hydraulic jacks attached to the bowl for controlling the vertical position of the bowl. The suspension system includes a lever pivotally attached to the hydraulic jacks, a hydraulic ram pivotally attached to the lever, a shock absorber rigidly attached to the tractor and pivotally attached to the hydraulic ram while being pivotally connected to and pivotally supporting the lever, and a controlling means operatively connected to the hydraulic rams whereby the rams can be locked out.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: July 20, 1976
    Assignee: International Harvester Company
    Inventor: Steven Erdelyan