Patents by Inventor Kenneth L. Knull

Kenneth L. Knull 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: 4073305
    Abstract: An elongated tube is bent to have a central portion, a short leg and a long leg. The long leg is closed by a cap which is counterbalanced into the closed position. An elongated inner tube having an outer upper end passes through the sidewall of the long leg and terminates a substantial distance down in the long leg of the outer tube. The outer end of the inner tube is covered by a conventional bulb air pump. Squeezing the air pump pushes a pulse of air out the lower end and creates a vacuum when the cap is closed to begin siphoning through the short leg.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: February 14, 1978
    Assignee: Belshaw Brothers, Inc.
    Inventors: Amos J. Brown, Thomas E. Belshaw, Kenneth L. Knull, Wilbur D. Wilke