Patents by Inventor John Costantini

John Costantini 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).

  • Steampath and process of retrofitting a nozzle thereof
    Patent number: 5392513
    Abstract: A process for replacing a multi-piece steampath in a nozzle box (12) where, initially, the steampath (22) is secured between upper (24) and lower (26) ring components by means of axially accessible, arcuate welds (36, 38) includes the steps of:a) axially machining the arcuate welds (36, 38) so as to permit removal of the steampath (22) in a direction axially away from the nozzle box;b) further machining a forward portion of the lower ring component to provide a substantially vertical weld surface; andc) securing a one-piece steampath (222) in place by an axially accessible upper weld (236) and a radially accessible lower weld (238).
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: February 28, 1995
    Assignee: General Electric Co.
    Inventors: Mario Mazzola, Michael T. Hamlin, Richard I. Cromer, John Costantini