Patents Assigned to Barrier Free Lifts, Inc.
  • Patent number: 5939857
    Abstract: An in-track charging system for charging the batteries of ceiling-mounted patient lifts includes a spring-biased pin assembly integrated with a movable truck and one or more rail-mounted charging stations. The truck-mounted assembly includes multiple spring-biased brass pins having upper ends extending upward from a top surface of the truck and lower ends terminating inside the main body of the truck. A wiring cable electrically connects the lower ends of the pins with a battery to be charged. Insulated bushings surround the spring-biased pins to prevent electrical short circuiting to the body of the truck. Each rail-mounted charging station includes a pair of insulated conductive plates that are joined to the inner surface of the upper horizontal cross-piece of the rail using conductive screws and nuts. To prevent electrical short circuiting to the rail insulator bushings are placed around the screws. Wires are connected to the ends of the screws and terminate at a battery charging unit.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: August 17, 1999
    Assignee: Barrier Free Lifts, Inc.
    Inventors: William Madigan, Floyd Swigget