Patents by Inventor Douglas Joseph Catton

Douglas Joseph Catton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Brake fluid blocking vehicle theft prevention system
    Patent number: 5988333
    Abstract: A vehicle anti-theft device that blocks and unblocks the flow of hydraulic fluid between a vehicle's master brake cylinder and wheel brake cylinder. When the invention is in a fluid blocking position, it locks the brakes and prevents movement of the vehicle on its wheels. Conversely, when the invention is in the nonblocking position, the brakes are unlocked and the wheels turn freely as in normal operation. The anti-theft device can be deactivated within the vehicle or by remote control.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: November 23, 1999
    Inventor: Douglas Joseph Catton