Patents by Inventor David S. Madden

David S. Madden 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).

  • Pavement sweeping apparatuses and methods
    Patent number: 10508395
    Abstract: Pavement sweeping apparatuses may include a directionally mobile apparatus frame. At least one pickup unit may be carried by the apparatus frame. At least one actuatable first side edge broom may be carried by the apparatus frame generally on the first side and forward of the at least one pickup unit. At least one actuatable first side curb broom may be carried by the apparatus frame generally on the first side and forward of the at least one pickup unit. At least one actuatable second side edge broom may be carried by the apparatus frame generally on a second side and forward of the at least one pickup unit. At least one actuatable second side curb broom may be carried by the apparatus frame generally on the second side and forward of the at least one pickup unit. Pavement sweeping methods are also disclosed.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: December 17, 2019
    Inventor: David S. Madden