Patents Assigned to Lucy Dean Roffman
  • Tire inflation indicator
    Patent number: 4851809
    Abstract: A tire inflation indicator is integrated into the sidewall of a tire to give a visual indication of proper pressurization. A small lamp is imbedded in the sidewall and is electrically connected through the sidewall to a pneumo-mechanical switch and battery. The switch connects the battery to the lamp when the tire pressure falls below a predetermined level.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: July 25, 1989
    Assignees: Suzanne Goggans, Carolyn J. Brown, Gene Patrick Adkison, Jane S. Stearns, Matthew M. Bishop, Lucy Dean Roffman
    Inventor: Steve R. McAlister