Patents Assigned to LIQUID PROPULSION, LLC
  • Patent number: 12434805
    Abstract: A thruster system for improved steering and maneuverability of a marine vessel when operating at relatively low, or wakeless speeds, such as in the vicinity of docks, swimmers or other obstacles, or when trailering, beaching or mooring. The thruster system has a modularized design adapted to independently control separate motor/propeller units located at various positions on the vessel's hull. Each propeller of the modular thruster motor system has its own relatively small, electric motor and mounting bracket, permitting each motor to be separately mounted to a location on the hull of the marine vessel apart from other thruster motors. The thruster system is further enhanced by an electrical control system for controlling each modular thruster motor system of the thruster system. In some embodiments, a charging system is provided that permits each electrical control system to be separately charged from the marine vessel's main battery.
    Type: Grant
    Filed: June 17, 2024
    Date of Patent: October 7, 2025
    Assignee: LIQUID PROPULSION, LLC
    Inventors: Robert D. Christensen, Martin Johnson, Eric Nofsinger, K. Ryan Christensen
  • Patent number: 12319397
    Abstract: A thruster system for improved steering and maneuverability of a marine vessel when operating at relatively low, or wakeless speeds, such as in the vicinity of docks, swimmers or other obstacles, or when trailering, beaching or mooring. The thruster system has a modularized design adapted to independently control separate motor/propeller units located at various positions on the vessel's hull. Each propeller of the modular thruster motor system has its own relatively small, electric motor and mounting bracket, permitting each motor to be separately mounted to a location on the hull of the marine vessel apart from other thruster motors. The thruster system is further enhanced by an electrical control system for controlling each modular thruster motor system of the thruster system. In some embodiments, a charging system is provided that permits each electrical control system to be separately charged from the marine vessel's main battery.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: June 3, 2025
    Assignee: LIQUID PROPULSION, LLC
    Inventors: Robert D. Christensen, Martin Johnson, Eric Nofsinger, K. Ryan Christensen
  • Patent number: 12006015
    Abstract: A thruster system for improved steering and maneuverability of a marine vessel when operating at relatively low, or wakeless speeds, such as in the vicinity of docks, swimmers or other obstacles, or when trailering, beaching or mooring. The thruster system has a modularized design adapted to independently control separate motor/propeller units located at various positions on the vessel's hull. Each propeller of the modular thruster motor system has its own relatively small, electric motor and mounting bracket, permitting each motor to be separately mounted to a location on the hull of the marine vessel apart from other thruster motors. The thruster system is further enhanced by an electrical control system for controlling each modular thruster motor system of the thruster system. In some embodiments, a charging system is provided that permits each electrical control system to be separately charged from the marine vessel's main battery.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: June 11, 2024
    Assignee: LIQUID PROPULSION, LLC
    Inventors: Robert D. Christensen, Martin Johnson, Eric Nofsinger, K. Ryan Christensen