Patents by Inventor Charles J. Roach

Charles J. Roach 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).

  • Patent number: 4482365
    Abstract: An air cleaner assembly is provided for supercharged engines including a supercharger compressor, comprising a vortex air cleaner upstream of the supercharger compressor, and a rotatable barrier filter cartridge that is self-cleaning downstream of the supercharger compressor.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: November 13, 1984
    Assignee: Pall Corporation
    Inventor: Charles J. Roach
  • Patent number: 4158449
    Abstract: An inlet air cleaner assembly is provided for the air intake of gas turbine engines comprising, in combination, an array of vortex air cleaners removing coarse and heavy contaminant particles, but not light and well dispersed contaminant particles, and an array of sheets of filamentary woven or nonwoven material, arranged to receive partially cleaned air from the vortex air cleaner array, and remove light and well dispersed contaminant particles suspended therein.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: June 19, 1979
    Assignee: Pall Corporation
    Inventors: Cedric Sun, Charles J. Roach
  • Patent number: 4050237
    Abstract: A demister assembly is provided for removing and reclaiming liquids from gases, and particularly engine lubricating oil aerosols from leakage air in gas turbine engines. When in series connection to an air vent line from a gas turbine engine, the demister strips out oil from the air before it is vented overboard while producing a moderate noise reduction and imposing only slightly higher back pressure on the system.By increasing in number selected demister components, the noise reduction can be significantly increased with minimal increase in back pressure, combining a silencer function with the demister function.
    Type: Grant
    Filed: November 18, 1975
    Date of Patent: September 27, 1977
    Assignee: Pall Corporation
    Inventors: David B. Pall, Charles J. Roach
  • Patent number: 4050913
    Abstract: A vortex air cleaner and acoustic attenuator assembly is provided having an array of vortex air cleaners which remove contaminant particles from influent air, and an array of spaced acoustic sheets defining passages therebetween for reception of clean effluent air from selected groups of adjacent vortex air cleaners in the array, the sheets being shaped and spaced to deflect such effluent air and sound pressure waves at least once from the acoustic surface of the sheets, thereby absorbing the maximum sound in the preferred frequency range of 8000 Hertz and reducing the imposed sound pressure level in which the vortex air cleaner assembly operates.
    Type: Grant
    Filed: April 23, 1975
    Date of Patent: September 27, 1977
    Assignee: Pall Corporation
    Inventor: Charles J. Roach