Patents by Inventor Mark E. Zappi

Mark E. Zappi 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: 5922112
    Abstract: A system for automatically delivering an anti-foaming agent to a biological aste treatment system includes a sensor for monitoring the amount of foam present in the system, a pump for pumping a predetermined quantity of anti-foaming agent into the system, and a controller for initiating the pumping sequence when the quantity of foam in the system reaches a preselected level. The controller includes two relays. The first relay controls the length of time the pump is on, thereby controlling the amount of anti-foam injected into the system, and the second relay establishes a period of time following the pumping period when the pump cannot be activated, thereby providing a period of time for the anti-foam to break down the foam before additional anti-foam can be added.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: July 13, 1999
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Mark E. Zappi, Brad E. Rogers