Patents by Inventor Mark R. Brent

Mark R. Brent 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).

  • Patent number: 6974948
    Abstract: Systems and elements are disclosed for creating a continuous, collimated detection zone for an automatically-actuated device or container, such as an automatic waste container, wherein the detection zone can be made to match the periphery of a defined area, such as the opening periphery of the container, is height adjustable and immune from ambient light fluctuations.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 13, 2005
    Inventor: Mark R. Brent
  • Patent number: 6596983
    Abstract: Systems and elements are disclosed for creating a continuous, collimated detection zone for an automatically-actuated device or container, such as an automatic waste container, wherein the detection zone can be made to match the opening periphery of the container, is height adjustable, immune from ambient light fluctuations and relatively simple and inexpensive to produce.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: July 22, 2003
    Inventor: Mark R. Brent
  • Publication number: 20010045512
    Abstract: Systems and elements are disclosed for creating a continuous, collimated detection zone for an automatically-actuated device or container, such as an automatic waste container, wherein the detection zone can be made to match the opening periphery of the container, is height adjustable, immune from ambient light fluctuations and relatively simple and inexpensive to produce.
    Type: Application
    Filed: May 25, 2001
    Publication date: November 29, 2001
    Inventor: Mark R. Brent
  • Patent number: 4744577
    Abstract: A regenerative braking system provides braking by transmitting the spring force of a deforming elastic medium as a torque tending to oppose the forward rotation of a wheel being braked. A brake pad assembly, mounted concentrically with the hub of a ground-engaging wheel, is actuated upon braking to provide frictional engagement between the hub and a wrapping mechanism which reels in a cable attached to an elastic medium, thereby deforming the elastic medium and storing energy, while applying a decelerating torque to the wheel. The wrapping mechanism is engaged only upon braking, and does not interfere with wheel rotation during other vehicle operating modes. Energy is accumulated until the deforming elastic reaches a limit stop, at which point continued braking is provided by frictional slippage between the brake pad and the rotating hub.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: May 17, 1988
    Inventors: Mark R. Brent, Jim M. Papadopoulos