Patents by Inventor John Daniel Proctor

John Daniel Proctor 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).

  • Tightly sealing safety cap
    Patent number: 4087016
    Abstract: A safety type cap for medicinal and similar containers capable of effecting a tight seal upon the container opening by means of a sealing flange extending laterally from the inner surface of the cap top, and which is deflected centripetally upon contact with the inner surface of the mouth of the container to result in resiliently bowing the top wall of the cap to result in increased outward pressure applied to the flange against the inner mouth surface. The radial thickness of the flange is substantially greater than the thickness of the cap top, so that the flange maintains a substantially undistorted shape during compression.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: May 2, 1978
    Assignee: Lermer Packaging Corporation
    Inventors: Edward Johnson Towns, Edward Morris Brown, Leonard Dykstra, Joseph Frank Spano, John Daniel Proctor