Patents by Inventor Richard G. Worwa

Richard G. Worwa 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).

  • Sweeper with fire control
    Patent number: 4571771
    Abstract: This is concerned with an improved fire control arrangement for controlling a fire caused by a lighted object, such as a cigarette, being swept into the debris chamber of a power sweeper having a vacuumized dust control system.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: February 25, 1986
    Assignee: Tennant Company
    Inventor: Richard G. Worwa