Patents by Inventor Silvano Barbieri

Silvano Barbieri 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).

  • Machine for spreading fertilizers, seeds, salt, and the like
    Patent number: 4991781
    Abstract: The machine comprises a hopper supported on a frame, having a horizontal portion supporting a centrifugal spreader below the hopper and an upright portion, upwardly supporting a U-shaped element and laterally supporting wings. The U-shaped element is connected to the hopper and the wings are rigidly associated with upwardly inclined arms which are in turn externally connected to the hopper at diametrically opposite points defined thereon. A pre-mixer is arranged inside the hopper, and a reinforcement element is located above the pre-mixer inside the hopper. The reinforcement element is rigidly associated with end plates which are connected to the diametrically opposite points at the inside of the hopper.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: February 12, 1991
    Assignee: B. S. Barbieri di Barbieri Silvano
    Inventor: Silvano Barbieri