Patents Assigned to Helen S. Ballas
  • Apparatus for lifting a human being
    Patent number: 4397051
    Abstract: An apparatus useful for lifting a human being from a surface comprising a stretcher adapted to be placed between the human being and the surface; a first motive system associated with a first side end of the stretcher and capable of lifting or lowering this first side end, as desired; and a second motive system removably associated with a second side end of the stretcher and being capable of lifting or lowering this second side end, as desired, provided that the first and second motive systems are capable of independent operation.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: August 9, 1983
    Assignee: Helen S. Ballas
    Inventor: Herbert O. Wheeler