Hand-valve Control Patents (Class 291/16)
  • Traction control system
    Patent number: 4852949
    Abstract: This invention consists of a funnel mounted near the wheel well of a vehicle, which contains marble chips and is activated when a button located on the steering wheel is depressed. The flow of marble chips continues until the button is depressed a second time.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: August 1, 1989
    Inventors: Michael H. Quinn, Paul H. Quinn