Patents by Inventor Daniel J. Halferty

Daniel J. Halferty 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).

  • Method of converting existing tank access ways
    Patent number: 6109823
    Abstract: A method of replacing an outwardly opening manhole cover that provides access to the interior of a tank or the like with an inwardly opening cover that includes the steps of removing the outwardly opening cover from the bolting flange of a tank installed manway and attaching a mounting flange to the manway bolting flange. A pair of hinges are connected to the mounting flange and an inwardly opening cover assembly is rotatably mounted on the hinges. The cover of the assembly is arranged to close and seal against either the mounting flange or the inner rim of the existing manway.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: August 29, 2000
    Assignee: Stebbins Engineering & Manufacturing Co.
    Inventors: Daniel J. Halferty, Mark D. Robinson