Patents by Inventor Mark E. Puda

Mark E. Puda 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: 6314776
    Abstract: A rolling mill stand having a pair of side shiftable rolls defining a roll gap profile therebetween varying along the length of the rolls according to a sixth order polynomial equation. The flatness of the strip exiting the rolling mill stand is controlled by determining the temperature profile of the rolls and adjusting the side shift positions of the rolls to compensate for the expansion of the rolls due to changes in the temperature of the rolls.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: November 13, 2001
    Assignee: Alcoa Inc.
    Inventor: Mark E. Puda
  • Patent number: 4531392
    Abstract: A method of controlling a rolling mill at high exit strip speed in which eccentricity of one or more of the roll assemblies causes undesired variations in the gauge of material exiting the mill. The method includes storing a model of the response of the load cells that measure the force at which the rolls of the mill engage the material in the mill, and a model of the response of actuator mechanisms of the mill that provide the force. In addition, the frequency of any eccentricity of one or more of the rolls during rotation. This frequency and the stored models are utilized to provide an estimate of possible phase errors caused by the lag in the response of the load cells in measuring the occurrence of cyclic changes in force due to eccentricity of the rolls and by the lag in the response of the actuator mechanism in moving to a particular position upon command from a controller.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: July 30, 1985
    Assignee: Aluminum Company of America
    Inventor: Mark E. Puda