Patents by Inventor Douglas T. Avery

Douglas T. Avery 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).

  • Stock supply train having reciprocating traction chain drive
    Patent number: 5331901
    Abstract: A stock supply train system for on-demand delivery of materials to a work station for selective loading and unloading, the supply train system having a displaceable railway train and a stationary track on which one or more railway cars roll under power of a stationary chain drive. The chain drive has a feed chain with opposite ends connected to respective opposite ends of the railway train, the train system including a stationary control panel at the work station for controlling operation of the chain drive and reciprocal displacement of the railway train on the railway track.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: July 26, 1994
    Inventor: Douglas T. Avery