Patents by Inventor Eric L. Johanson

Eric L. Johanson 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: 20160236250
    Abstract: A seal assembly for use in an oil film bearing rotatably supporting a roll in a rolling mill. The seal assembly includes a flexible seal mounted on a tapered intermediate section of the roll neck for rotation with the roll and within a fixed circular seal end plate. The seal end plate has a stepped interior defining annular inboard and outboard sealing surfaces, with the outboard sealing surface having a diameter larger than the diameter of the inboard sealing surface. The flexible seal has inboard and outboard flanges projecting radially into contact respectively with the inboard and outboard sealing surfaces of the seal end plate.
    Type: Application
    Filed: January 20, 2014
    Publication date: August 18, 2016
    Inventors: Eric L. Johanson, Earl S. Winslow, Jr., Matthew D. Palfreman, Thomas C. Wojtkowski, Jr., Peter N. Osgood
  • Patent number: 7857522
    Abstract: An oil film bearing assembly rotatably supports the neck of a roll in a rolling mill. The bearing assembly comprises a housing containing a sleeve bearing and a thrust bearing. A circular lock assembly coacts with the thrust bearing to axially retain the bearing assembly on the roll neck. The lock assembly is axially received on and is rotatable into and out of mechanical interengagement with the roll neck. First bearing elements are carried by and project inwardly from the lock assembly to contact a surface of the roll neck at a first location, and second bearing elements project inwardly from the housing to contact an outer surface of the lock assembly at a second location spaced axially from the first location.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: December 28, 2010
    Assignee: Siemens Industry, Inc.
    Inventors: Peter N. Osgood, Armando S. Martins, Thomas C. Wojtkowski, Jr., Eric L. Johanson, Ralph Divirgilio
  • Publication number: 20080181541
    Abstract: An oil film bearing assembly rotatably supports the neck of a roll in a rolling mill. The bearing assembly comprises a housing containing a sleeve bearing and a thrust bearing. A circular lock assembly coacts with the thrust bearing to axially retain the bearing assembly on the roll neck. The lock assembly is axially received on and is rotatable into and out of mechanical interengagement with the roll neck. First bearing elements are carried by and project inwardly from the lock assembly to contact a surface of the roll neck at a first location, and second bearing elements project inwardly from the housing to contact an outer surface of the lock assembly at a second location spaced axially from the first location.
    Type: Application
    Filed: December 17, 2007
    Publication date: July 31, 2008
    Inventors: Peter N. Osgood, Armando S. Martins, Thomas C. Wojtkowski, Eric L. Johanson, Ralph Divirgilio
  • Patent number: 7380431
    Abstract: An oil film bearing is disclosed for a rolling mill roll having a tapered neck leading to a reduced diameter end section. The bearing comprises an internally tapered sleeve received in a seated position on the tapered roll neck. The sleeve is journaled for rotation in a bushing fixed within a chock assembly. A tubular piston is received on and fixed relative to the reduced diameter end section of the roll. A cylinder is internally subdivided by the piston into first and second chambers. A sleeve ring abuts an end of the sleeve and a circular thrust component is interposed between and arranged to overlap adjacent segments of the sleeve ring and the piston.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 3, 2008
    Assignee: Morgan Construction Company
    Inventors: Dennis H. Shriner, Eric L. Johanson, Peter N. Osgood, Thomas C. Wojtkowski, Jr.