Patents by Inventor Andrew Brudnak, Jr.

Andrew Brudnak, Jr. 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).

  • Draft sensing elevating scraper with automatic elevator speed control
    Patent number: 3978597
    Abstract: A removal control system for a scraper having a tractor pivotally attached to a bowl, said bowl having a cutting blade attached thereto, an elevator pivotally mounted on said bowl, an engine and utilizing an elevator control system and a cutting depth control system either in combination or separately whereby the optimum removal rate is maintained during operation of said scraper.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: September 7, 1976
    Assignee: International Harvester Company
    Inventor: Andrew Brudnak, Jr.