Patents by Inventor Pierre Pince

Pierre Pince 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).

  • Device for cleaning ship's hulls and other immersed surfaces
    Patent number: 3946692
    Abstract: A device for cleaning immersed surfaces comprising a supporting structure rrying rotary circular brushes for cleaning the surface and wheels for moving the device on the surface. When rotated the brushes produce a force of attraction towards the surface. Transmission means, for example, calibrated springs, transmit to the wheel a predetermined part of the force of attraction so that the force with which the brushes are pressed against the surface is diminished and the adhesion of the wheels to the surface is ensured.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 30, 1976
    Assignee: Phoceenne Sous Marine - PSM Les Hommes Grenouilies Du Port De Marseille
    Inventors: Charles Sierra, Pierre Pince