Patents by Inventor Charles D. Grabowski

Charles D. Grabowski 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).

  • RAIL RE-PROFILING METHOD AND APPARATUS
    Publication number: 20200087865
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof, milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Application
    Filed: April 26, 2019
    Publication date: March 19, 2020
    Inventors: Donald R. Hughes, Charles D. Grabowski
  • Rail re-profiling method and apparatus
    Patent number: 10352001
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 16, 2019
    Assignee: GREENLEAF TECHNOLOGY CORPORATION
    Inventors: Donald R. Hughes, Charles D. Grabowski
  • Rail re-profiling method and apparatus
    Patent number: 9834891
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: December 5, 2017
    Assignee: GREENLEAF TECHNOLOGY CORPORATION
    Inventors: Donald R. Hughes, Charles D. Grabowski
  • RAIL RE-PROFILING METHOD AND APPARATUS
    Publication number: 20170159245
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Application
    Filed: February 15, 2017
    Publication date: June 8, 2017
    Inventors: Donald R. Hughes, Charles D. Grabowski
  • Rail re-profiling method and apparatus
    Patent number: 9617691
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 11, 2017
    Assignee: GREENLEAF TECHNOLOGY CORPORATION
    Inventors: Donald R. Hughes, Charles D. Grabowski
  • RAIL RE-PROFILING METHOD AND APPARATUS
    Publication number: 20160130768
    Abstract: A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail.
    Type: Application
    Filed: March 14, 2014
    Publication date: May 12, 2016
    Inventors: Donald R. Hughes, William P. Greenleaf, Charles D. Grabowski