Patents by Inventor Andrew Michael Ligda

Andrew Michael Ligda 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).

  • Apparatus and process for reducing profile variations in sheet metal stock
    Patent number: 8336356
    Abstract: An apparatus and process for reducing variations in the profile of a sheet metal stock are shown and described. The process includes the use of two passes, each comprising two smoothing surfaces. The smoothing surfaces of each pass are mateable to define a profile between the smoothing surfaces. The profile defined between the smoothing surfaces of the first pass is substantially the inverse of the profile defined between the smoothing surfaces of the second pass. As a sheet metal is processed between the first and second passes, it is formed with the first profile and the second profile thereby reducing variations in the profile of the sheet metal.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: December 25, 2012
    Assignee: LTC Roll & Engineering Co.
    Inventor: Andrew Michael Ligda
  • APPARATUS AND PROCESS FOR REDUCING PROFILE VARIATIONS IN SHEET METAL STOCK
    Publication number: 20110203339
    Abstract: An apparatus and process for reducing variations in the profile of a sheet metal stock are shown and described. The process includes the use of two passes, each comprising two smoothing surfaces. The smoothing surfaces of each pass are mateable to define a profile between the smoothing surfaces. The profile defined between the smoothing surfaces of the first pass is substantially the inverse of the profile defined between the smoothing surfaces of the second pass. As a sheet metal is processed between the first and second passes, it is formed with the first profile and the second profile thereby reducing variations in the profile of the sheet metal.
    Type: Application
    Filed: May 6, 2011
    Publication date: August 25, 2011
    Applicant: LTC Roll & Engineering Co.
    Inventor: Andrew Michael Ligda
  • Apparatus and process for reducing profile variations in sheet metal stock
    Patent number: 7958763
    Abstract: An apparatus and process for reducing variations in the profile of a sheet metal stock are shown and described. The process includes the use of two passes, each comprising two smoothing surfaces. The smoothing surfaces of each pass are mateable to define a profile between the smoothing surfaces. The profile defined between the smoothing surfaces of the first pass is substantially the inverse of the profile defined between the smoothing surfaces of the second pass. As a sheet metal is processed between the first and second passes, it is formed with the first profile and the second profile thereby reducing variations in the profile of the sheet metal.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: June 14, 2011
    Assignee: LTC Roll & Engineering Co.
    Inventor: Andrew Michael Ligda
  • APPARATUS AND PROCESS FOR REDUCING PROFILE VARIATIONS IN SHEET METAL STOCK
    Publication number: 20080047318
    Abstract: An apparatus and process for reducing variations in the profile of a sheet metal stock are shown and described. The process includes the use of two passes, each comprising two smoothing surfaces. The smoothing surfaces of each pass are mateable to define a profile between the smoothing surfaces. The profile defined between the smoothing surfaces of the first pass is substantially the inverse of the profile defined between the smoothing surfaces of the second pass. As a sheet metal is processed between the first and second passes, it is formed with the first profile and the second profile thereby reducing variations in the profile of the sheet metal.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 28, 2008
    Inventor: Andrew Michael Ligda