Patents by Inventor Eric N. Johnson

Eric 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: 10344619
    Abstract: A gaspath component includes a flowpath body. A cooling plenum is disposed within the flowpath body. The cooling plenum includes a first region configured to receive a cooling flow and a second region configured to expel the cooling flow from the flowpath body. A metering obstruction is positioned between the first region and the second region and is configured to meter a flow of coolant through the cooling plenum.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 9, 2019
    Assignee: United Technologies Corporation
    Inventors: Eric Beach, Jeffery A. Lovett, Javier Nebero Johnson, Jorge I. Farah, Caleb N. Cross
  • Patent number: 10337341
    Abstract: An augmentor vane assembly includes an additively manufactured augmentor vane and a fuel line additively manufactured within the augmentor vane. A method of manufacture including additively manufacturing an augmentor vane having a wall that forms an internal volume therein; and additively manufacturing a fuel line within the augmentor vane that extends through the internal volume.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: July 2, 2019
    Assignee: United Technologies Corporation
    Inventors: Javier N. Johnson, Chris Bates, Eric Beach, Jorge I. Farah, Caleb N. Cross
  • Patent number: 10335180
    Abstract: Surgical devices and methods are described herein that provide improved motor control and feedback, thereby combining advantages of manually-operated and powered surgical devices. In one embodiment, a surgical device includes a proximal handle portion that includes a motor, a distal end effector coupled to the handle portion, and a cutting element configured to cut tissue engaged by the end effector, wherein the motor is configured to supply power that moves the cutting element. The device also includes a motor control mechanism configured to cause the amount of the power to dynamically change in response to a manual user input when the cutting element is moving.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 2, 2019
    Assignee: Ethicon LLC
    Inventors: Eric N. Johnson, Kevin L. Houser, David C. Yates, Rudolph H. Nobis, Chad P. Boudreaux, Gregory A. Trees, Geoffrey S. Strobl, Gavin M. Monson
  • Publication number: 20190076159
    Abstract: Various exemplary methods and devices for actuating surgical instruments are provided. In general, a surgical device can include one or more actuation shafts configured to facilitate actuation of the device. In an exemplary embodiment, the device can include four actuation shafts, two actuation shafts to facilitate articulation of the device, one actuation shaft to facilitate opening and closing of jaws at a distal end of the device, and one actuation shaft to facilitate moving a cutting element of the device. In an exemplary embodiment, each of the one or more actuation shafts can include a distal elongate member and a proximal elongate member having a proximal end attached to a distal end of the distal elongate member. The proximal elongate member can be rigid, and the distal elongate member can be flexible.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Chad P. Boudreaux, Jason R. Lesko, Eric N. Johnson, Kevin M. Fiebig, Carl J. Draginoff, JR., Scott B. Killinger, Kris E. Kallenberger, Barry C. Worrell
  • Publication number: 20190000495
    Abstract: Surgical devices are provided having power-assisted or fully powered jaw closure. The devices herein generally include a handle portion, an elongate shaft, and an effector having first and second jaws configured to engage tissue. A motor and one or more compression springs can be operatively coupled, and activation of the motor can compress the spring(s) to reduce the amount of user supplied force to compress tissue between the jaws. In some embodiments, the devices can be configured to regulate an amount of compression applied by the jaws prior to, during, and/or after cutting of the tissue to promote hemostasis. For example, the devices can include sensors, processors, and/or other components that analyze data indicative of tissue type and tissue load. Based on this feedback, the device can automatically adjust the amount of compression or energy applied to the tissue to seal the tissue.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 3, 2019
    Inventors: John A. Hibner, Catherine A. Corbett, Scott R. Bingham, Chad P. Boudreaux, Carl J. Draginoff, JR., Geoffrey S. Strobl, Eric N. Johnson
  • Patent number: 10159506
    Abstract: Various exemplary methods and devices for actuating surgical instruments are provided. In general, a surgical device can include one or more actuation shafts configured to facilitate actuation of the device. In an exemplary embodiment, the device can include four actuation shafts, two actuation shafts to facilitate articulation of the device, one actuation shaft to facilitate opening and closing of jaws at a distal end of the device, and one actuation shaft to facilitate moving a cutting element of the device. In an exemplary embodiment, each of the one or more actuation shafts can include a distal elongate member and a proximal elongate member having a proximal end attached to a distal end of the distal elongate member. The proximal elongate member can be rigid, and the distal elongate member can be flexible.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: December 25, 2018
    Assignee: Ethicon LLC
    Inventors: Chad P. Boudreaux, Jason R. Lesko, Eric N. Johnson, Kevin M. Fiebig, Carl J. Draginoff, Jr., Scott B. Killinger, Kris E. Kallenberger, Barry C. Worrell
  • Patent number: 10039564
    Abstract: Surgical devices are provided having power-assisted or fully powered jaw closure. The devices herein generally include a handle portion, an elongate shaft, and an effector having first and second jaws configured to engage tissue. A motor and one or more compression springs can be operatively coupled, and activation of the motor can compress the spring(s) to reduce the amount of user supplied force to compress tissue between the jaws. In some embodiments, the devices can be configured to regulate an amount of compression applied by the jaws prior to, during, and/or after cutting of the tissue to promote hemostasis. For example, the devices can include sensors, processors, and/or other components that analyze data indicative of tissue type and tissue load. Based on this feedback, the device can automatically adjust the amount of compression or energy applied to the tissue to seal the tissue.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 7, 2018
    Assignee: Ethicon LLC
    Inventors: John A. Hibner, Catherine A. Corbett, Scott R. Bingham, Chad P. Boudreaux, Carl J. Draginoff, Jr., Geoffrey S. Strobl, Eric N. Johnson
  • Publication number: 20180021082
    Abstract: Methods and devices for controlling motorized surgical devices are provided. In general, the methods and devices can allow a surgical device to grasp and cut tissue. In some embodiments, the device's motor can begin providing power for grasping and/or cutting tissue in response to an output from the device's sensor, the device can adjust power provided by the motor based on whether the device is clamping tissue or is being fired, the device can adjust an amount of power provided by the motor based on an amount of user-applied force to the device's actuator and/or can control drive direction of the motor based on the amount of the force, the device can maintain a force applied to the device, the device can self-shift the motor, and/or the device can adjust an amount of power provided to the device's end effector based on a degree of the end effector's closure.
    Type: Application
    Filed: October 4, 2017
    Publication date: January 25, 2018
    Inventors: Gregory A. Trees, Eric N. Johnson, Chad P. Boudreaux, Robert Laird, Rudolph H. Nobis, Geoffrey S. Strobl, Jason R. Lesko, John A. Hibner, David C. Yates, David M. Locke, William B. Weisenburgh, II, Phillip Clauda
  • Publication number: 20170135747
    Abstract: Methods and devices are provided for retracting a cutting assembly in the event of a failure on a motorized electrosurgical device. A surgical device is provided that includes a handle portion with an elongate shaft extending distally therefrom. The elongate shaft has first and second jaws at a distal end, and the jaws are configured to engage tissue. The surgical device also has a cutting assembly configured to cut tissue engaged between the first and second jaws. A drive shaft extends from the handle of the surgical device through the elongate shaft and is coupled to the cutting assembly for moving the cutting assembly. The surgical device has a motorized gear assembly with at least one motor driven gear that is configured to move the drive shaft. The surgical device also has a bailout assembly that is configured to manually move the drive shaft.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 18, 2017
    Inventors: Megan Broderick, Catherine Corbett, Kevin M. Fiebig, Eric N. Johnson, Richard Leimbach, David Locke, Gavin Monson, Rudolph Nobis, Mark Overmyer, Brett Swensgard, Greg Trees, Aaron Voegele
  • Publication number: 20170020549
    Abstract: Surgical devices and methods are described herein that provide improved motor control and feedback, thereby combining advantages of manually-operated and powered surgical devices. In one embodiment, a surgical device includes a proximal handle portion that includes a motor, a distal end effector coupled to the handle portion, and a cutting element configured to cut tissue engaged by the end effector, wherein the motor is configured to supply power that moves the cutting element. The device also includes a motor control mechanism configured to cause the amount of the power to dynamically change in response to a manual user input when the cutting element is moving.
    Type: Application
    Filed: October 7, 2016
    Publication date: January 26, 2017
    Inventors: Eric N. Johnson, Kevin L. Houser, David C. Yates, Rudolph H. Nobis, Chad P. Boudreaux, Gregory A. Trees, Geoffrey S. Strobl, Gavin M. Monson
  • Patent number: 9468454
    Abstract: Surgical devices and methods are described herein that provide improved motor control and feedback, thereby combining advantages of manually-operated and powered surgical devices. In one embodiment, a surgical device includes a proximal handle portion that includes a motor, a distal end effector coupled to the handle portion, and a cutting element configured to cut tissue engaged by the end effector, wherein the motor is configured to supply power that moves the cutting element. The device also includes a motor control mechanism configured to cause the amount of the power to dynamically change in response to a manual user input when the cutting element is moving.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: October 18, 2016
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Eric N. Johnson, Kevin L. Houser, David C. Yates, Rudolph H. Nobis, Chad P. Boudreaux, Gregory A. Trees, Geoffrey S. Strobl, Gavin M. Monson
  • Publication number: 20160270809
    Abstract: Various exemplary methods and devices for actuating surgical instruments are provided. In general, a surgical device can include one or more actuation shafts configured to facilitate actuation of the device. In an exemplary embodiment, the device can include four actuation shafts, two actuation shafts to facilitate articulation of the device, one actuation shaft to facilitate opening and closing of jaws at a distal end of the device, and one actuation shaft to facilitate moving a cutting element of the device. In an exemplary embodiment, each of the one or more actuation shafts can include a distal elongate member and a proximal elongate member having a proximal end attached to a distal end of the distal elongate member. The proximal elongate member can be rigid, and the distal elongate member can be flexible.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 22, 2016
    Inventors: Chad P. Boudreaux, Jason R. Lesko, Eric N. Johnson, Kevin M. Fiebig, Carl J. Draginoff, JR., Scott B. Killinger, Kris E. Kallenberger, Barry C. Worrell
  • Publication number: 20160089175
    Abstract: Surgical devices are provided having power-assisted or fully powered jaw closure. The devices herein generally include a handle portion, an elongate shaft, and an effector having first and second jaws configured to engage tissue. A motor and one or more compression springs can be operatively coupled, and activation of the motor can compress the spring(s) to reduce the amount of user supplied force to compress tissue between the jaws. In some embodiments, the devices can be configured to regulate an amount of compression applied by the jaws prior to, during, and/or after cutting of the tissue to promote hemostasis. For example, the devices can include sensors, processors, and/or other components that analyze data indicative of tissue type and tissue load. Based on this feedback, the device can automatically adjust the amount of compression or energy applied to the tissue to seal the tissue.
    Type: Application
    Filed: September 30, 2014
    Publication date: March 31, 2016
    Inventors: John A. Hibner, Catherine A. Corbett, Scott R. Bingham, Chad P. Boudreaux, Carl J. Draginoff, JR., Geoffrey S. Strobl, Eric N. Johnson
  • Publication number: 20150209061
    Abstract: Surgical devices and methods are described herein that provide improved motor control and feedback, thereby combining advantages of manually-operated and powered surgical devices. In one embodiment, a surgical device includes a proximal handle portion that includes a motor, a distal end effector coupled to the handle portion, and a cutting element configured to cut tissue engaged by the end effector, wherein the motor is configured to supply power that moves the cutting element. The device also includes a motor control mechanism configured to cause the amount of the power to dynamically change in response to a manual user input when the cutting element is moving.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 30, 2015
    Inventors: Eric N. Johnson, Kevin L. Houser, David C. Yates, Rudolph H. Nobis, Chad P. Boudreaux, Gregory A. Trees, Geoffrey S. Strobl, Gavin M. Monson
  • Patent number: 8489528
    Abstract: Various embodiments of the invention are neural network adaptive control systems and methods configured to concurrently consider both recorded and current data, so that persistent excitation is not required. A neural network adaptive control system of the present invention can specifically select and record data that has as many linearly independent elements as the dimension of the basis of the uncertainty. Using this recorded data along with current data, the neural network adaptive control system can guarantee global exponential parameter convergence in adaptive parameter estimation problems. Other embodiments of the neural network adaptive control system are also disclosed.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: July 16, 2013
    Assignee: Georgia Tech Research Corporation
    Inventors: Girish V. Chowdhary, Eric N. Johnson, Seung Min Oh
  • Publication number: 20110161267
    Abstract: Various embodiments of the invention are neural network adaptive control systems and methods configured to concurrently consider both recorded and current data, so that persistent excitation is not required. A neural network adaptive control system of the present invention can specifically select and record data that has as many linearly independent elements as the dimension of the basis of the uncertainty. Using this recorded data along with current data, the neural network adaptive control system can guarantee global exponential parameter convergence in adaptive parameter estimation problems. Other embodiments of the neural network adaptive control system are also disclosed.
    Type: Application
    Filed: July 28, 2010
    Publication date: June 30, 2011
    Applicant: Georgia Tech Research Corporation
    Inventors: Girish V. Chowdhary, Eric N. Johnson, Seung Min Oh
  • Patent number: 6944146
    Abstract: A method and apparatus for use in a mobile communications system having a plurality of cell segments includes allocating a plurality of channels to perform communications and defining a plurality of time groups. A channel reuse pattern is provided that is based on the plurality of channel frequencies and the plurality of time groups. Control channels are carried in a different time slot of a frame in each time group. Predetermined time slots are allocated as guard periods to reduce likelihood of interference of signaling due to overlap of time slots in neighboring cell segments. In one arrangement, three channel frequencies are allocated. Further, three or four time groups are defined to provide an effective 3/9 or 4/12 channel reuse pattern. In each time group, control channels are carried in odd time slots of a time-division multiple access (TDMA) frame.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: September 13, 2005
    Assignee: Nortel Networks Limited
    Inventors: Peter A. Barany, Shavantha Kularatna, Eric N. Johnson, Shamim Akbar Rahman
  • Patent number: 6584084
    Abstract: A mobile communications system includes a plurality of cell segments each allocated primary carriers to carry circuit-switched traffic and packet data carriers for carrying packet-switched traffic. The packet data carriers include two sets of carriers, a main set of carriers and a secondary set of carriers. The main packet data carriers are allocated to corresponding cell segments. The secondary carriers are allocated to high capacity segments, which may be segments having high bursty traffic or segments in which a hierarchical cell structure is implemented. For high bursty cell segments, the main carriers are used to carry control signaling for performing selection or reselection. However, in such high bursty cell segments, the secondary carriers are not used for performing cell segment selection or reselection.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: June 24, 2003
    Assignee: Nortel Networks Ltd.
    Inventors: Peter A. Barany, Eric N. Johnson
  • Patent number: 6497599
    Abstract: A mobile communications system having a plurality of cells, with each cell being divided into a number of sectors. Each sector is allocated one of a corresponding number of channels of different frequencies. In addition, a plurality of time groups are defined, and a channel reuse pattern is provided that is based on both channel frequencies and time groups. In one arrangement, a 1/3 channel reuse pattern is provided to carry traffic signals in the system. For control signals, which are more susceptible to interference, a higher effective channel reuse pattern (e.g., 3/9 or 4/12) based on both frequency and time is employed.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: December 24, 2002
    Assignee: Nortel Networks Limited
    Inventors: Eric N. Johnson, Adrien A. Comeau, Peter A. Barany, Shavantha Kularatna
  • Patent number: 6137823
    Abstract: An electric arc furnace comprises a bottom, a roof and a side wall. The side wall is formed from a plurality of bimetal panels each having an inner copper face and an outer steel face. The roof may be formed with similar bi-metal panels. The hollow panels include internal baffles to define channels through which cooling water flows. The copper face is smooth and free of welds so as to maximize thermal heat transfer by the panels. The copper face enhances thermal efficiency and minimizes maintenance requirements of the panels, while the steel face reduces manufacturing costs of the panels.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: October 24, 2000
    Assignee: J. T. Cullen Co., Inc.
    Inventors: Eric N. Johnson, Roger E. Johnson, Craig S. Johnson