Patents by Inventor Christopher A. Carrigan

Christopher A. Carrigan 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: 6746018
    Abstract: A multiple shaft seal arrangement positioned between a shaft and an inside diameter surface of an aperture in a wall. The multiple shaft seal arrangement has a flinger attached to the shaft with a face seal mounted to the flinger. A double lip oil seal is mounted to the inside diameter of the aperture. The flinger is positioned such that the face seal is pressed against the double lip oil seal. Accordingly, rotation of the shaft causes rotation of the flinger and face seal. This centrifugally throws contaminants, such as particulate matter, away from the aperture. The void between the face seal and the inside diameter of the aperture is filled with grease or similar substance. The combination of these elements greatly prohibits debris, moisture, particulate matter or other environmental elements from passing from one side of the multiple shaft seal arrangement to the other.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: June 8, 2004
    Assignee: Emerson Power Transmission Manufacturing, L.P.
    Inventors: Michael L. Lewis, Christopher A. Carrigan, Erwin R. Carrigan, Steven H. Griggs
  • Patent number: 6663313
    Abstract: A mounting system for a speed reducer having a housing with a rotatable input drive coupled with the housing and a gear train coupled with the input to drive an output. The mounting system has a cylinder having an inner and outer surface and two ends. The outer surface includes a portion adapted to couple with the drive train. The outer surface at both ends may have a threaded portion or another securement portion. The inner surface may be tapered from both the ends such that the tapers are substantially symmetrical about the cylinder. A bushing ring, with an internal diameter, may include threads to threadily connect with either threaded end of the output cylinder, or another type of securement may be used. A bushing, which includes a flange and a cylindrical portion, is adapted to couple with the bushing ring. The flange portion couples with the bushing ring on either side of the output cylinder.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: December 16, 2003
    Assignee: Emerson Power Transmission Manufacturing, L.P.
    Inventors: Michael L. Lewis, Erwin R. Carrigan, Christopher A. Carrigan, Steven H. Griggs
  • Publication number: 20030155718
    Abstract: A multiple shaft seal arrangement positioned between a shaft and an inside diameter surface of an aperture in a wall. The multiple shaft seal arrangement has a flinger attached to the shaft with a face seal mounted to the flinger. A double lip oil seal is mounted to the inside diameter of the aperture. The flinger is positioned such that the face seal is pressed against the double lip oil seal. Accordingly, rotation of the shaft causes rotation of the flinger and face seal. This centrifugally throws contaminants, such as particulate matter, away from the aperture. The void between the face seal and the inside diameter of the aperture is filled with grease or similar substance. The combination of these elements greatly prohibits debris, moisture, particulate matter or other environmental elements from passing from one side of the multiple shaft seal arrangement to the other.
    Type: Application
    Filed: February 21, 2002
    Publication date: August 21, 2003
    Inventors: Michael L. Lewis, Christopher A. Carrigan, Erwin R. Carrigan, Steven H. Griggs
  • Publication number: 20020090258
    Abstract: A mounting system for a speed reducer having a housing with a rotatable input drive coupled with the housing and a gear train coupled with the input to drive an output. The mounting system has a cylinder having an inner and outer surface and two ends. The outer surface includes a portion adapted to couple with the drive train. The outer surface at both ends may have a threaded portion or another securement portion. The inner surface may be tapered from both the ends such that the tapers are substantially symmetrical about the cylinder. A bushing ring, with an internal diameter, may include threads to threadily connect with either threaded end of the output cylinder, or another type of securement may be used. A bushing, which includes a flange and a cylindrical portion, is adapted to couple with the bushing ring. The flange portion couples with the bushing ring on either side of the output cylinder.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Inventors: Michael L. Lewis, Erwin R. Carrigan, Christopher A. Carrigan, Steven H. Griggs