Patents by Inventor Mark A. Joki

Mark A. Joki 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: 20030094849
    Abstract: A mounting for the road wheel of an automotive vehicle includes a spindle, a hub located around the spindle and inboard and outboard tapered roller bearings located between the hub and spindle where they are mounted in opposition. The cones (inner races) of the two bearings are separated by a spacer which at its ends is attached to the cones. The spacer holds the cones together within the hub so that the bearings and hub can be installed on and removed from the spindle as a unit. The spacer also establishes the setting for the bearings. In addition, the mounting has a seal located in the inboard end of the hub. The seal has lips which establish dynamic fluid barriers along the cone of the inboard bearing and along an adjacent sealing surface on the spindle without contacting the cone or spindle. The raceways and rollers for the two bearings have highly crowned profiles and the hub and the seal within contain an optimum amount of grease for lubricating the bearings.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 22, 2003
    Inventors: Mark A. Joki, James W. Skelly, Richard Borowski, Steven V. Boyd, Thomas J. Rybkoski
  • Patent number: 6523383
    Abstract: A monitoring and controlling system for monitoring and controlling various operating characteristics of machine components. The monitoring and controlling system includes a primary transceiver, with sensors and control devices, mounted integrally with the monitored component. The primary transceiver communicates with a secondary transceiver and receives its electrical power from the secondary transceiver without use of interconnecting communication or power cables. The integrated mounting of the primary transceiver and sensors within the monitored component without the use of interconnecting cables allows for replacement of the monitored component in harsh operating environments without the risk of damage to interconnecting electrical connectors and cables. The operating data detected by the sensor for the monitored component is communicated by the primary transceiver and the secondary transceiver to a monitoring network which analyzes the data to determine the need for maintenance of the monitored component.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: February 25, 2003
    Assignee: The Timken Company
    Inventors: Mark A. Joki, David G. Beechy, Kevin E. Rehfus, Raymond A. Severyn, Kenneth W. Lindsay
  • Patent number: 6502996
    Abstract: A tapered roller bearing that is well-suited for supporting a pinion in an automotive differential has a cone and a cup provided with opposed raceways that are crowned. The cone also has a thrust rib provided with a rib face at the large end of its raceway. In addition, the bearing has tapered rollers, each having a tapered side face that is crowned and a large end that is spherical. The rollers contact the raceways along their crowned side faces and the rib face along their spherical end faces. The roller length to large end diameter is less than 1.5. The crowning on the raceway, together with the crowning of the roller side face provide total end relief ranging between 700 &mgr;in. and 1500 &mgr;in. per inch. The centers of contact between the side faces and raceways are offset toward the rib face. The height of the rib face amounts to 30%-45% of the diameter of the large ends of the rollers. The radius of the spherical large end face for a roller exceeds 90% of the roller apex length.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: January 7, 2003
    Assignee: The Timken Company
    Inventor: Mark A. Joki
  • Patent number: 6490935
    Abstract: A tapered roller bearing has at least one groove in its fixed race, with that groove being located behind and presented away from the raceway for the race. The groove, which creates an unsupported beam within the race, contains a strain sensor which is oriented to detect strains in the circumferential direction. The presence of a loaded roller over the beam deflects the beam and causes the sensor to produce a signal, with the magnitude of the signal reflecting the magnitude of the load transmitted by the roller. By locating one sensor where the greatest radial load is transmitted and two sensors 30° to 70° symmetrically on each side of that one sensor, one can measure both radial and axial loads in the bearing. By locating two sensors in a single groove, axially aligned, but also axially offset, one can detect misalignment of the raceways along which the rollers roll and also skewing of the rollers.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: December 10, 2002
    Assignee: The Timken Company
    Inventors: Mark A. Joki, Kenneth W. Lindsay
  • Publication number: 20020168127
    Abstract: A tapered roller bearing that is well-suited for supporting a pinion in an automotive differential has a cone and a cup provided with opposed raceways that are crowned. The cone also has a thrust rib provided with a rib face at the large end of its raceway. In addition, the bearing has tapered rollers, each having a tapered side face that is crowned and a large end that is spherical. The rollers contact the raceways along their crowned side faces and the rib face along their spherical end faces. The roller length to large end diameter is less than 1.5. The crowning on the raceway, together with the crowning of the roller side face provide total end relief ranging between 700 &mgr;in. and 1500 &mgr;in. per inch. The centers of contact between the side faces and raceways are offset toward the rib face. The height of the rib face amounts to 30%-45% of the diameter of the large ends of the rollers. The radius of the spherical large end face for a roller exceeds 90% of the roller apex length.
    Type: Application
    Filed: May 11, 2001
    Publication date: November 14, 2002
    Applicant: The Timken Company
    Inventor: Mark A. Joki
  • Publication number: 20020129633
    Abstract: A monitoring and controlling system for monitoring and controlling various operating characteristics of machine components. The monitoring and controlling system includes a primary transceiver, with sensors and control devices, mounted integrally with the monitored component. The primary transceiver communicates with a secondary transceiver and receives its electrical power from the secondary transceiver without use of interconnecting communication or power cables. The integrated mounting of the primary transceiver and sensors within the monitored component without the use of interconnecting cables allows for replacement of the monitored component in harsh operating environments without the risk of damage to interconnecting electrical connectors and cables. The operating data detected by the sensor for the monitored component is communicated by the primary transceiver and the secondary transceiver to a monitoring network which analyzes the data to determine the need for maintenance of the monitored component.
    Type: Application
    Filed: December 28, 2000
    Publication date: September 19, 2002
    Applicant: The Timken Company
    Inventors: Mark A. Joki, David G. Beechy, Kevin E. Rehfus, Raymond A. Severyn, Kenneth W. Lindsay
  • Patent number: 5662445
    Abstract: A compact locking nut has a body provided with a threaded bore along which the nut engages a thread so that upon rotation it will advance over a thread to a position suitable for securing and positioning a machine component such as a bearing. The nut has a machined back face along which it bears against the secured machine component and a front face at its other end. The body contains two grooves--one external in that it opens outwardly from the exterior surface and the other internal in that it opens into the bore--and these grooves divide the body into a clamping section, a locking section, and an intervening web which is thin enough to flex with relative ease. The external groove lies closest to the back face, whereas the internal groove lies closest to the front face. On its exterior the body has lands which extend out to the front face. Typically, the body derives from a forging having the lands and a bore.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: September 2, 1997
    Assignee: The Timken Company
    Inventors: William E. Harbottle, Mark A. Joki
  • Patent number: 5609456
    Abstract: A locking nut includes a main ring having a threaded bore, a front end face at one end of the bore and a counterbore at the other end of the bore. Actually, the threaded bore opens into the counterbore through a recess which in turn opens out of a shoulder that forms the end of the counterbore. The main ring also has threaded holes which open out of the recess around the threaded center bore. In addition to the main ring, the nut has a secondary ring which fits into the counterbore and against the shoulder of the main ring. In the region of the threaded holes the secondary ring is relieved to the extent that it has a lesser diameter than the recess. The secondary ring also has a threaded bore, the thread of which matches the thread of the bore for the main ring. Indeed, the threads for the two rings are cut in the same machining operation, so that no interruption in pitch exists between the threads of the two rings.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 11, 1997
    Assignee: The Timken Corporation
    Inventor: Mark A. Joki
  • Patent number: 5488871
    Abstract: A hub rotates around a spindle on bearings which have angular raceways so that the bearings are capable of carrying both axial and radial loads and may be adjusted into a condition of preload with an axially directed force applied to one of the races, usually the outboard race on the spindle. That force which represents the preload in the bearings, is transmitted through a force sensor which produces a signal that reflects the magnitude of the force. By monitoring the force sensor, one can adjust the bearings to a desired preload.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: February 6, 1996
    Assignee: The Timken Company
    Inventors: William E. Harbottle, Mark A. Joki