Patents by Inventor J. Lewis Dorrity

J. Lewis Dorrity 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).

  • Publication number: 20020054694
    Abstract: A method and apparatus is provided which analyzes an image of an object to detect and identify defects in the object utilizing multi-dimensional wavelet neural networks.
    Type: Application
    Filed: March 26, 1999
    Publication date: May 9, 2002
    Inventors: GEORGE J. VACHTSEVANOS, JAVIER ECHAUZ, MUID MUFTI, J. LEWIS DORRITY, PENG WANG
  • Patent number: 5815198
    Abstract: The Invention includes a method and apparatus which analyzes an image of an object to detect and identify defects in the object. The present invention utilizes a scanning technique which converts a 2-D image of the object into a 1-D image, a transformation technique which extracts relevant features from the image, and a fuzzy inferencing technique which utilizes the features generated by the transformation technique to detect and identify defects. The present invention preferably includes an off-line learning process which selects the optimum transform coefficients for a given set of defects and stores the corresponding features in a rulebase. Preferably, the wavelet transform is used as the transformation technique to provide an analysis of the image which is localized in the frequency and time domains. The present invention may also include an on-line learning process when the present invention is incorporated into a manufacturing process for real time inspection of the object being manufactured.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: September 29, 1998
    Inventors: George J. Vachtsevanos, Muid Mufti, J. Lewis Dorrity
  • Patent number: 4748706
    Abstract: A method and apparatus for sequentially performing dye strikes on a continuous dye range from a plurality of dye lots to reduce downtime of the range. The apparatus employs two dye pans that are horizontally and vertically movable relative to the dye pad on the range so that each can be sequentially moved into and out of a dyeing position while the machine is running and fabric continues to move therethrough. The textile material includes a leader section ahead of the fabric to be dyed in a desired strike order, such as, for example comprised of three leaders with first and second dye strike patches positioned therebetween in order to provide first and second strikes or runs on a continuous basis without stopping the dye range.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: June 7, 1988
    Assignee: Greenwood Mills, Inc.
    Inventors: J. Lewis Dorrity, David P. Hambrick, J. Thomas Hip, Jr.