Patents by Inventor Simon Ian Hogg

Simon Ian Hogg 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).

  • Sealing arrangement using brush seals
    Patent number: 7559554
    Abstract: In sealing arrangement 41 between first and second relatively rotatable bodies of a machine such as a steam turbine, a relatively high pressure p0 exists on one side of the sealing arrangement and a relatively low pressure pf exists on the other side. The sealing arrangement comprises a series of sealing elements or units S1, S2, S3, at least one of which comprises a brush seal. A seal bypassing device, preferably comprising a pressure relief valve 42-44 limits the pressure drop across the brush seal.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: July 14, 2009
    Assignee: Alstom Technology Ltd
    Inventors: Simon Ian Hogg, Karl Urlichs
  • Process for producing leaves for leaf seal
    Patent number: 7487588
    Abstract: In a process for producing leaves (20, 20?) for a leaf seal, in particular as a seal for a gas turbine, which leaves (20, 20?) are laterally delimited by a peripheral edge contour and have regions of different thicknesses (d1, d2), a simplification, without sacrificing precision, is achieved by virtue of the edge contour of the leaves (20, 20?) being cut out of a metal sheet (28) by an etching process and the regions of different thicknesses (d1, d2) also being produced simultaneously as part of the etching process.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: February 10, 2009
    Assignee: ALSTOM Technology Ltd.
    Inventors: Simon Ian Hogg, Nigel Anthony Rhodes, Erwin Schoenfeld