Patents by Inventor Leonard T. Bates

Leonard T. Bates 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).

  • Mixing means
    Patent number: 4204773
    Abstract: A plant to produce concrete by mixing sand, cement, aggregate and water by a continuous operation. A plurality of storage hoppers with twin outlets associated with weigh hoppers permit a discharge of aggregate and sand material through vibratory feeders onto a conveyor belt so that one group of weigh hoppers discharges while a second group is being filled. The conveyor belt delivers in a continuous manner to a trough mixer which receives cement from a silo and water for mixing said ingredients.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: May 27, 1980
    Assignee: Winget Limited
    Inventor: Leonard T. Bates