Patents by Inventor Ralph N. Di Lorenzo

Ralph N. Di Lorenzo 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).

  • Air release valve
    Patent number: 4586528
    Abstract: A float-operated air release valve for a liquid transport system includes an internal float which has a downwardly concave impact surface arranged to be struck by any liquid entering the valve chamber thereby reducing the response time of the valve and rapidly closing the valve outlet before liquid can be discharged from the outlet. The impact force on the float can be enhanced by providing a depending flange around a substantial portion of the periphery of the concave surface.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: May 6, 1986
    Assignee: APCO Valve and Primer Corporation
    Inventors: Lewis B. Andres, Robert L. Esvang, Ralph N. Di Lorenzo