Patents by Inventor Peggy L. Sims

Peggy L. Sims 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).

  • Multiple tip cleaning process for pipes
    Patent number: 6010575
    Abstract: A process for pipe cleaning using one or more cleaning modules which are propelled through the pipe by a hydraulic fluid to apply at least two cleaning tips in a particular alternating sequence. The hydraulic fluid is inspected to determine when no further abrasive cleaning is required. When such a determination is made, another tip is applied to finish the surface of the pipe.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: January 4, 2000
    Assignee: Praxair Technology, Inc.
    Inventor: Peggy L. Sims
  • Method of cleaning furnace headers
    Patent number: 5698042
    Abstract: A method for cleaning furnace headers using a cleaning module for cleaning pipes, having a flexible body with a cleaning surface and a nose at each end, the nose being tapered to a tip. The dimensions of the cleaning module are such that the ratio of the overall length to the diameter is about 1.5 to about 1.75 and the ratio of overall length to nose length is about 5 to about 10.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: December 16, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: Peggy L. Sims, Joseph L. Greene, John W. Hoose
  • Alternating tip run process for pipe cleaning
    Patent number: 5607513
    Abstract: A process for pipe cleaning using a cleaning module which is propelled through the pipe by a hydraulic fluid and has at least two cleaning tips attached in a particular alternating sequence. The hydraulic fluid is inspected to determine when no further abrasive cleaning is required. When such a determination is made, another tip is applied to finish the surface of the pipe.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: March 4, 1997
    Assignee: Praxair Technology, Inc.
    Inventor: Peggy L. Sims