Patents Assigned to Tyrspy Inc.
  • Tire pressure indicator
    Patent number: 4059823
    Abstract: A wheel-mounted tire pressure indicator which includes a housing enclosing a pneumatically-actuated pressure indicia scale as well as a self-contained battery and circuit for energizing a signal light on the housing when the tire pressure is below a predetermined selected value.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: November 22, 1977
    Assignee: Tyrspy Inc.
    Inventors: Clyde J. Martin, Floyd A. Nicholson