Patents by Inventor Benjamin J. Krywick

Benjamin J. Krywick 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).

  • Patent number: 5099535
    Abstract: A cleaner for a submerged surface (11) comprises a body (15) defining a suction passage (16) and pressure passage (17) therethrough. Suction passage (16) extends between inlet (18) and outlet (19) in the body and is connectable to the inlet of a filtration system by flexible hose (13). Pressure passage (17) extends between inlet (20) and outlet (21). Inlet (20) is connectable to an outlet of the system. Drive means in the form of a water turbine (22) is located in passage (17). Water flow under pressure through passage (17) drives turbine (22) which in turn drives hind wheels (23) to displace the apparatus over surface (11), while debris or the like is sucked up through the suction passage (16).
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: March 31, 1992
    Assignee: Daniel J. D. Chauvier
    Inventors: Daniel J. V. D. Chauvier, Peter Woodman, Benjamin J. Krywick