Patents by Inventor James N. Johnson

James N. 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).

  • Patent number: 6220940
    Abstract: A micro-finishing apparatus for finishing the outer surface of small cylindrical workpieces with repeatability. The apparatus comprises a regulating mechanism rotating and feeding a workpiece against a micro-finishing spool drive mechanism. Planar extents of the regulating mechanism and micro-finishing spool drive mechanism form an opening having a distance that is no greater than the diameter of the workpiece. The workpiece is fed through the opening at an angle by a guide bar. The regulating mechanism rotates the workpiece against the abrasive of the micro-finishing spool drive mechanism and simultaneously feeds it through the apparatus.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: April 24, 2001
    Assignee: Grinding Equipment & Machinery Co., Inc.
    Inventor: James N. Johnson
  • Patent number: 5593345
    Abstract: A conversion grinding wheel frame for an abrasive-belt to secure thereto for replacing a conventional stone grinding wheel used on a cylindrical roll grinding machine. The abrasive-belt conversion wheel is secured to a spindle of the grinding machine by a wheel clamping assembly. The abrasive-belt conversion wheel frame having an engagement working surface and a mounting surface with both surfaces having apertures therethrough traversing from a chamber within the abrasive-belt conversion grinding wheel frame. Fluid under pressure in the chamber escapes through the apertures to the working surface and mounting surface. The pressure of the gas expands the abrasive-belt while being mounted onto the abrasive-belt conversion grinding wheel frame. The mounting surface is diametrically tapered in relation to the working surface to afford initial engagement of the abrasive-belt which further assists mounting the abrasive-belt onto the working surface.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: January 14, 1997
    Inventor: James N. Johnson
  • Patent number: 5042204
    Abstract: An improvement in a finishing machine for trochoidal surfaces of a rotary engine housing. The finishing machine rotates the engine housing in a trochoidal path around a constant tool engagement point that utilizes a super finishing abrasive film advancement oscillating head whereby precise finishing can be consistently obtained without abrasive tool wear and associated realignment of the abrasive tool.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: August 27, 1991
    Inventor: James N. Johnson
  • Patent number: 4966510
    Abstract: An apparatus configurable to support different types of loads on a wheeled vehicle during over-the-road travel includes a substantially enclosed compartment, an intermediate support shelf disposed interiorly of the compartment for relative movement therein and an apparatus for selectively moving the intermediate support shelf between a first position for supporting a first plurality of golf carts and the like thereon for transport thereof at a predetermined height above the floor of the compartment to permit the simultaneous transport of the second plurality of golf carts and the like disposed on the floor, and a second position in which the intermediate support shelf is in substantially flush relation with the boundaries of the interior of the compartment.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: October 30, 1990
    Inventor: James N. Johnson, Jr.
  • Patent number: 4796387
    Abstract: A micro-abrasive finishing device to polish flat, curved or irregular surfaces to exceedingly high tolerances required for a variety of finishing rolls or the like currently used in industry to finish various materials. The finishing device utilizes micro-abrasives to their fullest potential by varying oscillation and relative speed at which the abrasive contacts the surface to be finished.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: January 10, 1989
    Inventor: James N. Johnson
  • Patent number: 4359307
    Abstract: A trailer van is adapted to load compressible materials in sequential steps resulting in a compressed product load. The product is compressed by a bulkhead which in turn is moved by a pair of wheeled trolleys. A separate pair of cables is associated with each trolly for stabilizing the trolleys in a vertical disposition. A chain tensioner sprocket is used in conjunction with each loop arrangement and trolley. A direction reversing control valve and handle are located in the trailer floor adjacent the rear opening.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: November 16, 1982
    Assignee: Strick Corporation
    Inventor: James N. Johnson, Jr.
  • Patent number: 3968884
    Abstract: A mobile crane has a multisection telescopic boom and an optionally useable lattice jib storable alongside the boom with the base end of the jib adjacent the point end of the boom. Improved jib storage support means are provided to facilitate storing and installing the jib. Thus, one side of the boom base section is provided with a pair of longitudinally spaced apart jib storage support assemblies. Each support assembly is pivotally mounted so that it can be swung between a jib-supporting position and a stored position. Each support assembly includes a laterally extending member which is tiltable between a horizonal and a downward position so that the jib can be easily swung thereonto for storage and then subsequently locked into horizontal position, whereupon locking brackets secure the jib on the support assembly.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: July 13, 1976
    Assignee: Harnischfeger Corporation
    Inventors: James N. Johnson, James C. Mayo, Sr.
  • Patent number: 3945333
    Abstract: A mobile crane has a multisection telescopic boom and an optionally useable lattice jib storable alongside the boom with the base end of the jib adjacent the point end of the boom. One side of the boom base section is provided with a pair of longitudinally spaced apart jib storage support assemblies to facilitate storing and installing the jib. The point end of the boom fly section and the base end of the jib are provided with cooperating disconnectable hinge members for attaching the jib to the boom so that the jib can be swung horizontally between stored and installed positions. The point end of the boom fly section and the base end of the jib are provided with connection means, including a cylindrical rod on the boom fly section and cooperating journal bearings on the jib, for securing the jib to the boom in either axial aligned position or in downwardly tilted position, and adjustable strut means is detachably connected between the boom and the jib to limit the extent to which the jib can tilt downwardly.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 23, 1976
    Assignee: Harnischfeger Corporation
    Inventors: Robert A. Fritsch, James C. Mayo, Sr., James N. Johnson