Patents by Inventor Johan KALLVIK

Johan KALLVIK 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).

  • Propeller arrangement in a cathodic protection system
    Patent number: 12637774
    Abstract: The invention relates to a propeller arrangement in a cathodic protection system for a marine vessel with a marine propulsion system, which cathodic protection system comprises a direct current power source with a positive terminal. The propulsion system comprises at least one driveline housing at least partially submerged in water; a torque transmitting drive shaft extending out of the driveline housing; and at least one propeller mounted on the drive shaft. According to the invention, the at least one propeller is electrically isolated from its drive shaft. Each electrically isolated propeller is electrically connected to a slip ring connector, which slip ring connector is in electrical connection with the positive terminal. The invention further relates to a vessel provided with such a propeller arrangement.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 26, 2026
    Assignee: VOLVO PENTA CORPORATION
    Inventors: Viktor Raftegard, Johan Kallvik
  • PROPELLER ARRANGEMENT IN A CATHODIC PROTECTION SYSTEM
    Publication number: 20220380907
    Abstract: The invention relates to a propeller arrangement in a cathodic protection system for a marine vessel with a marine propulsion system, which cathodic protection system comprises a direct current power source with a positive terminal. The propulsion system comprises at least one driveline housing at least partially submerged in water; a torque transmitting drive shaft extending out of the driveline housing; and at least one propeller mounted on the drive shaft. According to the invention, the at least one propeller is electrically isolated from its drive shaft. Each electrically isolated propeller is electrically connected to a slip ring connector, which slip ring connector is in electrical connection with the positive terminal. The invention further relates to a vessel provided with such a propeller arrangement.
    Type: Application
    Filed: October 18, 2019
    Publication date: December 1, 2022
    Applicant: VOLVO PENTA CORPORATION
    Inventors: Viktor RAFTEGARD, Johan KALLVIK