Patents by Inventor John A. Krug, Jr.

John A. Krug, Jr. 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).

  • Automatic air inlet and outlet valve assembly
    Patent number: 4239059
    Abstract: In accordance with the present invention an air inlet and outlet valve is disclosed which automatically opens and closes when a bottom operable tank lading valve is opened and closed. The air valve is mounted adjacent the top of the tank and is in fluid communication by means of a conduit with an opening in the tank. The air valve is automatically opened and closed when the lading valve opens and closes by means of an air valve linkage including an operating shaft which extends from the lading valve up through the tank to operate the air valve. The air valve is located in a chamber in the upper portion of the tank and seats on a valve seat located in the lower portion of the chamber.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: December 16, 1980
    Inventors: Patricia S. Stoller, Gerald D. Garner, John A. Krug, Jr.
  • Automatic air inlet and outlet valve assembly having upper chamber opening
    Patent number: 4239060
    Abstract: In accordance with the present invention an air inlet and outlet valve is disclosed which automatically opens and closes when a bottom operable tank lading valve is opened and closed. The air valve is mounted adjacent the top of the tank and is in fluid communication by means of a conduit with an opening in the tank. The air valve is automatically opened and closed when the lading valve opens and closes by means of an air valve linkage including an operating shaft which extends from the lading valve up through the tank to operate the air valve.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: December 16, 1980
    Assignee: ACF Industries, Inc.
    Inventors: Patricia S. Stoller, John A. Krug, Jr., Gerald D. Garner
  • Automatic air inlet and outlet valve assembly
    Patent number: 4237927
    Abstract: In accordance with the present invention an air inlet and outlet valve is disclosed which automatically opens and closes when a bottom operable tank lading valve is opened and closed. The air valve is mounted adjacent the top of the tank and is in fluid communication by means of a conduit with an opening in the tank. The air valve is automatically opened and closed when the lading valve opens and closes by means of an air valve linkage including an operating shaft which extends from the lading valve up through the tank to operate the air valve.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: December 9, 1980
    Assignee: ACF Industries, Incorporated
    Inventors: Patricia S. Stoller, John A. Krug, Jr., Gerald D. Garner