Patents by Inventor Steven J. Fujan

Steven J. Fujan 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: 20230311569
    Abstract: An axle, for a mining machine, includes one or more segments, each defining a first wall portion, a second wall portion disposed opposite to the first wall portion, a third wall portion, and a fourth wall portion. The third wall portion extends between the first and the second wall portions to meet the first wall portion at a first corner portion and the second wall portion at a second corner portion. The fourth wall portion extends between the first and the second wall portions to meet the first wall portion at a third corner portion and the second wall portion at a fourth corner portion. The second thickness of the second corner portion and the third thickness of the third corner portion are greater than each of the first thickness of the first corner portion and the fourth thickness of the fourth corner portion.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Applicant: Caterpillar Inc.
    Inventors: Dinesh Sivakumar, Regini Selvapalace Ehuraj, Steven J. Fujan, Scott M Shaffer
  • Patent number: 11105375
    Abstract: A retention system for a bearing member includes a sleeve member and a retention member. The retention system includes an inner shoulder adapted to limit movement of the bearing member in at least one of a first axial direction and a second axial direction relative to the bore. The retention system includes an outer shoulder adapted to limit movement of at least one of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. The retention system includes a plurality of fasteners adapted to limit movement of each of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. Each of the sleeve member and the retention member is adapted to limit contact of the bearing member with the bore.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: August 31, 2021
    Assignee: Caterpillar Inc.
    Inventors: Daniel Thomas Unger, Suresh Sappa, Scott Shaffer, Steven J. Fujan, Jacob P. Fawer
  • Publication number: 20210215203
    Abstract: A retention system for a bearing member includes a sleeve member and a retention member. The retention system includes an inner shoulder adapted to limit movement of the bearing member in at least one of a first axial direction and a second axial direction relative to the bore. The retention system includes an outer shoulder adapted to limit movement of at least one of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. The retention system includes a plurality of fasteners adapted to limit movement of each of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. Each of the sleeve member and the retention member is adapted to limit contact of the bearing member with the bore.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 15, 2021
    Applicant: Caterpillar Inc.
    Inventors: Daniel Thomas Unger, Suresh Sappa, Scott Shaffer, Steven J. Fujan, Jacob P. Fawer
  • Patent number: 9796211
    Abstract: A dual wheel adapter assembly for mounting dual wheel rims to a wheel hub is provided. The dual wheel adapter assembly may include a hollow cylindrical adapter, including a central bore defined by an inner surface of the adapter, a first contact surface, and a second contact surface. The dual wheel adapter assembly may also include an inboard wheel rim configured to support a tire, an outboard wheel rim configured to support a tire, and a wedge clamp configured to be coupled to the hub. The first contact surface may abut the hub and the wedge clamp may apply a compressive force to the second contact surface to couple the adapter to the hub.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: October 24, 2017
    Assignee: Caterpillar Global Mining LLC
    Inventors: Steven J. Fujan, Matthew J. Orvedahl, Frederick W. Loeber
  • Patent number: 9751445
    Abstract: A front tower on a truck body for use with a mining vehicle. The truck body includes a truck bed including a canopy and a front exterior wall. The front exterior wall includes at least one front tower. The front tower includes two longitudinal plates spanning the front exterior wall, at least one gusset plate transverse and connected to the longitudinal plates, and a landing plate transverse and connected to the longitudinal plates. The landing plates are configured to transfer load stress from the bed to a frame of a mining vehicle.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 5, 2017
    Assignee: Caterpillar Inc.
    Inventors: Samuel J. Arul, Steven J. Fujan
  • Publication number: 20170174148
    Abstract: A liner for a floor of a truck dump body includes a frame formed of a plurality of frame bars coupled to the dump body floor; and a plurality of grid bars coupled to and extending substantially perpendicular to a frame bar to create a plurality of open bins configured to receive payload material; wherein the plurality of frame bars are curved to match a curvature of the dump body floor. A method of applying a curved liner to a truck dump body includes burning to shape a plurality of frame bars; attaching a plurality of grid bars substantially perpendicular to the plurality of frame bars to create a plurality of open bins; and welding the frame bars to a truck dump body floor; wherein the truck dump body floor has a curvature; and wherein the plurality of frame bars are curved to match the curvature of the truck dump body floor.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 22, 2017
    Applicant: Caterpillar Inc.
    Inventor: Steven J. Fujan
  • Publication number: 20150352895
    Abstract: A dual wheel adapter assembly for mounting dual wheel rims to a wheel hub is provided. The dual wheel adapter assembly may include a hollow cylindrical adapter, including a central bore defined by an inner surface of the adapter, a first contact surface, and a second contact surface. The dual wheel adapter assembly may also include an inboard wheel rim configured to support a tire, an outboard wheel rim configured to support a tire, and a wedge clamp configured to be coupled to the hub. The first contact surface may abut the hub and the wedge clamp may apply a compressive force to the second contact surface to couple the adapter to the hub.
    Type: Application
    Filed: December 4, 2012
    Publication date: December 10, 2015
    Applicant: Caterpillar Global Mining LLC
    Inventors: Steven J. FUJAN, Matthew J. ORVEDAHL, Frederick W. LOEBER
  • Patent number: 7638702
    Abstract: An improved piano tuning hammer for use by piano technicians, that allows dramatically increased tuning accuracy, ease of use, and speed. The improved tuning hammer is comprised of relatively large cross-sections. The improved tuning hammer may be comprised of lightweight materials. The relatively large cross-sections provide increased stiffness, which serves to increase the effectiveness of the tuning process.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: December 29, 2009
    Inventor: Steven J. Fujan
  • Patent number: 6754945
    Abstract: A method of forming a stress isolating joint on a dump body of on an off-highway rubber-tired haulage vehicle includes providing a first plate having an elongated edge, a top side, and a face, and providing a second plate including an elongated edge. Overlapping the first and second plates to define a widened seam bounded at least in part by the elongated edges of the respective plates, and welding along the elongated edge of the first plate to join the elongated edge of the first plate to an adjacent surface of the second plate. The weld and at least a portion of the second plate disposed along the widened seam cooperate to permit the second plate to apply a resisting load to the face of the first plate in response to the application of a load against an opposing face of the first plate.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: June 29, 2004
    Inventors: Steven J. Fujan, William R. Borthick
  • Publication number: 20030189084
    Abstract: A method of forming a stress isolating joint on a dump body of on an off-highway rubber-tired haulage vehicle includes providing a first plate having an elongated edge, a top side, and a face, and providing a second plate including an elongated edge. Overlapping the first and second plates to define a widened seam bounded at least in part by the elongated edges of the respective plates, and welding along the elongated edge of the first plate to join the elongated edge of the first plate to an adjacent surface of the second plate. The weld and at least a portion of the second plate disposed along the widened seam cooperate to permit the second plate to apply a resisting load to the face of the first plate in response to the application of a load against an opposing face of the first plate.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 9, 2003
    Applicant: Terex Corporation
    Inventors: Steven J. Fujan, William R. Borthick
  • Patent number: 6592172
    Abstract: A dump body for use on an off-highway rubber-tired haulage vehicle includes a floor, a pair of sidewalls, and a front wall. The floor includes a forward edge, a pair of side edges, and a rear edge generally defining a spillway. A plurality of load bearing beams are mounted to a bottom surface of the floor and are disposed generally parallel to and straddling a longitudinal axis of the floor. Each of the sidewalls includes a lower edge mounted to a corresponding one of the side edges of the floor, each sidewall further including a forward edge, a rearward edge, and a top edge. The front wall includes a bottom edge, a top edge, and a pair of side edges, with the bottom edge mounted to the forward edge of the floor. Each of the side edges of the front wall is mounted to the forward edge of one of the sidewalls.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: July 15, 2003
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, William R. Borthick
  • Patent number: 6568744
    Abstract: A joint isolation system for use on a dump body of on an off-highway rubber-tired haulage vehicle includes a first plate having an elongated edge, a top side, and a face. A second plate is provided and includes an elongated edge. The first and second plates overlap each other to define a widened seam bounded at least in part by the elongated edges of the respective plates, and a weld is disposed along the elongated edge of the first plate joining the elongated edge of the first plate to an adjacent surface of the second plate, the weld and at least a portion of the second plate disposed along the widened seam cooperate to permit the second plate to apply a resisting load to the face of the first plate in response to the application of a load against an opposing face of the first plate.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: May 27, 2003
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, William R. Borthick
  • Patent number: 6565146
    Abstract: A dump body for use on a off-highway rubber-tired haulage vehicle includes a curved floor having a forward portion, a rearward portion, and a pair of side edges extending between the forward portion and the rearward portion. The floor includes a bottom surface adapted for pivotal attachment to the haulage vehicle. A pair of sidewalls are provided that are joined to the floor along a corresponding one of the edges of the floor. Each of the sidewalls includes a forward portion, and each of the sidewalls may be curved. A curved front wall is joined to the forward portion of the floor and to the forward portion of each of the sidewalls. Accordingly, the floor, the sidewalls, and the front wall cooperate to define a payload space.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: May 20, 2003
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, William R. Borthick
  • Publication number: 20020180241
    Abstract: A dump body for use on a off-highway rubber-tired haulage vehicle includes a curved floor having a forward portion, a rearward portion, and a pair of side edges extending between the forward portion and the rearward portion. The floor includes a bottom surface adapted for pivotal attachment to the haulage vehicle. A pair of sidewalls are provided that are joined to the floor along a corresponding one of the edges of the floor. Each of the sidewalls includes a forward portion, and each of the sidewalls may be curved. A curved front wall is joined to the forward portion of the floor and to the forward portion of each of the sidewalls. Accordingly, the floor, the sidewalls, and the front wall cooperate to define a payload space.
    Type: Application
    Filed: May 21, 2002
    Publication date: December 5, 2002
    Inventors: Steven J. Fujan, William R. Borthick
  • Publication number: 20020180242
    Abstract: A joint isolation system for use on a dump body of on an off-highway rubber-tired haulage vehicle includes a first plate having an elongated edge, a top side, and a face. A second plate is provided and includes an elongated edge. The first and second plates overlap each other to define a widened seam bounded at least in part by the elongated edges of the respective plates, and a weld is disposed along the elongated edge of the first plate joining the elongated edge of the first plate to an adjacent surface of the second plate, the weld and at least a portion of the second plate disposed along the widened seam cooperate to permit the second plate to apply a resisting load to the face of the first plate in response to the application of a load against an opposing face of the first plate.
    Type: Application
    Filed: May 21, 2002
    Publication date: December 5, 2002
    Inventors: Steven J. Fujan, William R. Borthick
  • Publication number: 20020180240
    Abstract: A dump body for use on an off-highway rubber-tired haulage vehicle includes a floor, a pair of sidewalls, and a front wall. The floor includes a forward edge, a pair of side edges, and a rear edge generally defining a spillway. A plurality of load bearing beams are mounted to a bottom surface of the floor and are disposed generally parallel to and straddling a longitudinal axis of the floor. Each of the sidewalls includes a lower edge mounted to a corresponding one of the side edges of the floor, each sidewall further including a forward edge, a rearward edge, and a top edge. The front wall includes a bottom edge, a top edge, and a pair of side edges, with the bottom edge mounted to the forward edge of the floor. Each of the side edges of the front wall is mounted to the forward edge of one of the sidewalls.
    Type: Application
    Filed: May 21, 2002
    Publication date: December 5, 2002
    Inventors: Steven J. Fujan, William R. Borthick
  • Patent number: 5555699
    Abstract: An improved cross-stiffened panel structure, such as used on bridges, load bearing floors, large haulage containers and dump trucks, is composed of a deck plate to which are attached a plurality of spaced apart stiffening ribs. A plurality of transverse beams, each having a cut-out shaped to fit over the external contour of the stiffening ribs, are welded to the deck plate except at the cut-outs. The cut-outs are dimensioned so that a nominal gap is maintained between the cut-outs and the stiffening ribs. In another embodiment, saddles are fabricated to fit over the stiffening ribs and welded to the deck plate while maintaining a nominal gap between the stiffening ribs and the saddles. The transverse beams cut-outs conform to the contour of the saddles and the transverse beams are welded to the deck plate and the saddles.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: September 17, 1996
    Assignee: Terex Corporation
    Inventors: William R. Borthick, Steven J. Fujan
  • Patent number: 5333895
    Abstract: A dual rear axle system for large vehicles in which the vehicle has a frame, and the axle system includes a forward axle housing, a draft arm having one arm affixed to the forward axle housing and the other pivotally affixed to the vehicle frame, a rearward axle housing spaced from and parallel to the forward axle housing, an axle extending through both axle housings having wheels and tires thereon, an upper linkage having one end pivotally attached to the upper portion of the forward axle housing and the other end pivotally attached to the upper portion of the rearward axle housing, lower linkage having one end pivotally attached to the lower portion of the forward axle housing and the other end pivotally attached to the lower portion of the rearward axle housing so that the axle housings are supported in spaced apart relationship with the axle housings independently free to move in vertical planes and compressible strut members extending between the axle housings and the frame for spring supporting the fram
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: August 2, 1994
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, Frederick W. Loeber
  • Patent number: 5308105
    Abstract: A steerable dual rear axle system for large vehicles in which the vehicle has a frame, and the axle system includes a forward axle housing, a draft arm having one arm affixed to the forward axle housing and the other pivotally affixed to the vehicle frame, a rearward axle housing spaced from the forward axle housing, an axle extending through both axle housings having wheels and tires thereon, an upper linkage having one end pivotally attached to the upper portion of the forward axle housing and the other end pivotally attached to the upper portion of the rearward axle housing, a lower linkage having one end pivotally attached to the lower portion of the forward axle housing and the other end pivotally attached to the lower portion of the rearward axle housing so that the axle housings are supported in spaced apart relationship with the axle housings being independently free to move in vertical planes, compressible strut members extending between the axle housings and the frame for spring supporting the frame
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: May 3, 1994
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, Frederick W. Loeber
  • Patent number: 5150942
    Abstract: A cab for a driver of a large off-road machine in which the machine has a frame with a longitudinal axis in the direction of normal travel, the cab being formed of a superstructure of a generally rectangular box configuration, one lower edge of the cab superstructure being pivotally affixed to the machine frame about an axis of pivotation substantially parallel to the vehicle frame longitudinal axis and a limited displacement shock absorber attaching the cab superstructure other edge to the machine frame so that thereby in the event of rollover of the vehicle, the shock absorber absorbs energy to reduce the possibility of collapse of the superstructure to thereby provide increase safety to the machine operator. The cab is completed by a control instrument module removably attached to the superstructure front, an environment control module removably attachable to the superstructure back, and left and right door modules removably attachable to the superstructure left and right sides.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: September 29, 1992
    Assignee: Terex Corporation
    Inventors: Steven J. Fujan, Frederick W. Loeber