Patents by Inventor Stuart J. Johnson

Stuart J. Johnson 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).

  • Gear shaping machine
    Patent number: 4487535
    Abstract: The gear shaping machine is of simplified construction and is dedicated essentially to forming only a single type of gear or a narrow range of gears. To enable the machine to be of simplified construction, the drive train between the cutter and work spindles consists of only four gears in a machine for cutting internal gears and consists of only four gears and a direction-changing idler in a machine for cutting external gears. Relative infeeding of the cutter and the work blank is effected by pivoting one of the spindles relative to the other spindle with one of the drive gears walking around another one of the drive gears during such pivoting. The differential rotation of the spindles produced by the pivoting action is negated in order to keep the spindles in proper rotational relationship.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: December 11, 1984
    Assignee: Barber-Colman Company
    Inventors: Stuart J. Johnson, George E. Fransson
  • Hobbing machine
    Patent number: 4479745
    Abstract: The hobbing machine is of simplified construction and is dedicated essentially to forming only a single type of gear or a narrow range of gears. To enable the machine to be of simplified construction, its drive train consists of only four gears and its hob head is mounted to pivot around the axis of the drive shaft for the work spindle. The arrangement of the four gears together with the pivotal movement of the hob head enables the hob spindle to be inclined at a predetermined setting angle relative to the work spindle and enables the center distance between the spindles to be selectively changed.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: October 30, 1984
    Assignee: Barber-Colman Company
    Inventors: Stuart J. Johnson, George E. Fransson
  • Shape generation by orbiting a rotating shaping cutter
    Patent number: 4431351
    Abstract: A method and apparatus for generating a shape on the periphery of a non-rotating workpiece by orbiting a rotating shaping cutter in cutting engagement with the workpiece while reciprocating the cutter along its own axis.
    Type: Grant
    Filed: August 13, 1982
    Date of Patent: February 14, 1984
    Assignee: Barber-Colman Company
    Inventors: George E. Fransson, Stuart J. Johnson, Edward W. Haug
  • Method of shape generation by orbiting a rotating hob
    Patent number: 4427324
    Abstract: A method for generating a shape on the periphery of a non-rotating workpiece by orbiting a rotating hob in cutting engagement with the workpiece while moving the hob and workpiece relatively lengthwise of the workpiece.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: January 24, 1984
    Assignee: Barber-Colman Company
    Inventors: George E. Fransson, Stuart J. Johnson, Edward W. Haug
  • Hobbing apparatus with orbiting hob
    Patent number: 4360296
    Abstract: A method and apparatus for generating a shape on the periphery of a non-rotating workpiece by orbiting a rotating cutter in cutting engagement with the workpiece. Either the cutter or the workpiece is moved linearly in the lengthwise direction of the workpiece.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: November 23, 1982
    Assignee: Barber-Colman Company
    Inventors: George E. Fransson, Stuart J. Johnson, Edward J. Haug
  • Method and apparatus for checking a gear
    Patent number: 4325189
    Abstract: A newly formed gear is checked for composite error by holding the gear in a rotationally stationary position and by orbiting and rolling a master gear around the newly formed gear.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: April 20, 1982
    Assignee: Barber-Colman Company
    Inventors: George E. Fransson, Stuart J. Johnson, Edward W. Haug