Patents Assigned to Robert J. Pace
  • Ultrasonic contact lens cleaning device
    Patent number: 5178173
    Abstract: An ultrasonic contact lens cleaning device has a housing with a hemispherical cover hingedly affixed to it. A container for a lens cleaning solution is mounted in the housing. An acoustic resonant structure in the housing is coupled to the container. The structure has piezoelectric components. A frequency modulated power circuit in the housing is electrically connected to and drives the acoustic resonant structure and provides a controlled level of ultrasonic cleaning energy.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: January 12, 1993
    Assignee: Robert J. Pace
    Inventors: John J. Erickson, Drew D. Erickson