Patents by Inventor Richard John Burwood

Richard John Burwood 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 and Apparatus for Extruding Cementitious Articles
    Publication number: 20090218720
    Abstract: A method and apparatus (20) for extruding fibre cement. The extruder comprises a casing (30) with a pair of inter-meshing self-wiping screws (40) rotatably mounted therein. The screws continuously mix and or knead the components of the fibre cement provided through various feed means (61, 62) to form a substantially homogeneous paste and force the paste through a die (50) to form a green cementitious extrudate suitable for curing.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 3, 2009
    Inventors: Hong Chen, Richard John Burwood, Ian Andrew Maxwell, Nilmini Sureka Goringe
  • Method and apparatus for extruding cementitious articles
    Publication number: 20030146539
    Abstract: A method and apparatus (20) for extruding fibre cement. The extruder comprises a casing (30) with a pair of inter-meshing self-wiping screws (40) rotatably mounted therein. The screws continuously mix and or knead the components of the fibre cement provided through various feed means (61, 62) to form a substantially homogeneous paste and force the paste through a die (50) to form a green cementitious extrudate suitable for curing.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 7, 2003
    Inventors: Hong Chen, Richard John Burwood, Ian Andrew Maxwell, Nilmini Sureka Goringe