Patents by Inventor Friedhelm Bangel

Friedhelm Bangel 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).

  • High pressure/temperature steam passage for steam turbines in double shell housing design
    Patent number: 5037270
    Abstract: A live steam passage of double-shell design for steam turbines is disclosed. According to the present invention, the steam passage is welded as a welded-in insert (1) onto the outer housing (9) of the turbine. The piston ring supoprt sleeve (2) with the piston rings (4) slides as a separate part in a sleeve (5), which the sleeve (2) is screwed onto the welded-in insert (1) with locking screws (3). A threaded ring (6) provided with a high collar holds the sleeve (5) in place in the inner housing (7) of the turbine. The live steam passage according to the present invention can be used in steam turbines, including throttle-controlled steam turbines with inner housings.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: August 6, 1991
    Assignee: MAN Gutehoffnungshutte Aktiengesellschaft
    Inventors: Friedhelm Bangel, Klaus Buchkremer, Dieter Forster, Achim Zimmermann, Heinz-Dieter Tremmel