Patents by Inventor Bruce Mitchell

Bruce Mitchell 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: 5016542
    Abstract: A closed loop transit system that transports passengers in vehicles to a destination of their choice where they exit a main line to a shunt line and station. The system has automatic means for bypassing vehicles past stations that are full and moving excess empty vehicles from one station to a next station that does not have excess vehicles.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: May 21, 1991
    Inventor: Bruce Mitchell
  • Patent number: 4285278
    Abstract: Improvements are provided in a rapid transit system which employs a guide line network including a main line and an interconnected side line, a car moveable throughout the network and interconnected thereto by an overhead tow bar, car drive means, and switch means for diverting the car to and from the main line and side line. The improvements include an overhead main line guide bar at and around intersections of the main and side lines, a main line guide finger vertically moveable from within the car into and out of sliding engagement with the main line guide bar, an overhead side line guide bar at and around said intersection, and a pair of turn-off guide fingers vertically moveable as a unit from within the car for sliding engagement with the side line guide bar to divert the car to the side line. These fingers are spaced lateral of both sides of the main line guide finger. Lever means in the car alternately raise and lower the turn off guide fingers and main line guide finger.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: August 25, 1981
    Inventor: Bruce Mitchell
  • Patent number: RE29674
    Abstract: Cigarette filters are made by passing a continuous rod of filter material continuously through a moving die to form a continuous filter element having a repeated pattern of staggered grooves so arranged that the continuous filter element can be cut at regular intervals to form individual filter elements each having in its peripheral surface a number of grooves extending substantially axially alternately from opposite ends of the element.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: June 20, 1978
    Assignee: Molins Limited
    Inventors: Francis Auguste Maurice Labbe, Michael Bruce Mitchell