Patents by Inventor David Wendt

David Wendt 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: 10601281
    Abstract: A modular drive system for use with an industrial machine having a gear case includes a motor system. The motor system includes a motor housing and a motor shaft disposed in the motor housing. The motor system has a first, non-drive end and a second, drive end. The modular drive system also includes a brake system coupled to the second end of the motor system, and a drive gear coupled to the motor shaft, the drive gear disposed between the first end and the brake system.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 24, 2020
    Assignee: Joy Global Surface Mining Inc.
    Inventors: Nicholas R. Voelz, Joseph Colwell, David Wendt
  • Patent number: 9765292
    Abstract: A bioreactor for preferably three-dimensional cell culturing comprises a scaffold chamber, a first tube, a second tube and a first valve with a scaffold adapter, a tube adapter and a medium adapter. The first valve has a housing with a longitudinal female portion ending in an opening and a longitudinal actuator being arranged through the opening of the female portion of the housing such that the actuator is arranged partially inside the housing and partially outside the housing, wherein the actuator of the first valve is axially moveable relative to the housing of the first valve between a first position in which the first valve is in the operation position and a second position in which the first valve is in the medium change position. By providing the actuators in the first valve which is applied by axial movements, operation of the bioreactor can be comparably simple and safe.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 19, 2017
    Assignees: University Hospital of Basel, Cellec Biotek AG
    Inventors: Elia Piccinini, David Wendt, Adam Papadimitropoulos, Laura Spinelli, Stefania Adele Riboldi, Francesco Giovanni Greco, Peter Iwatschenko
  • Publication number: 20150197719
    Abstract: A bioreactor for preferably three-dimensional cell culturing comprises a scaffold chamber, a first tube, a second tube and a first valve with a scaffold adapter, a tube adapter and a medium adapter. The first valve has a housing with a longitudinal female portion ending in an opening and a longitudinal actuator being arranged through the opening of the female portion of the housing such that the actuator is arranged partially inside the housing and partially outside the housing, wherein the actuator of the first valve is axially moveable relative to the housing of the first valve between a first position in which the first valve is in the operation position and a second position in which the first valve is in the medium change position. By providing the actuators in the first valve which is applied by axial movements, operation of the bioreactor can be comparably simple and safe. In particular, such arrangement allows for a comparably easy identification of the position of the first valve, i.e., e.g.
    Type: Application
    Filed: June 4, 2013
    Publication date: July 16, 2015
    Inventors: Elia Piccinini, David Wendt, Adam Papadimitropoulos, Laura Spinelli, Stefania Adele Riboldi, Francesco Giovanni Greco, Peter Iwatschenko
  • Patent number: 9074354
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: July 7, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8935061
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 13, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140371996
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8825317
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: September 2, 2014
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140188351
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 3, 2014
    Applicant: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140129094
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 8, 2014
    Applicant: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8620536
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 31, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8571766
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 29, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8546142
    Abstract: The invention is a reverse-flow method and system for the loading, proliferation and differentiation of cells into and throughout an implantable biocompatible three-dimensional scaffold.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: October 1, 2013
    Assignee: Millenium Biologix Technologies Inc.
    Inventors: Ivan Martin, David Wendt, Alessandra Braccini, Rodolfo Quatro, Marcel Jakob
  • Publication number: 20130249336
    Abstract: A modular drive system for use with an industrial machine having a gear case includes a motor system. The motor system includes a motor housing and a motor shaft disposed in the motor housing. The motor system has a first, non-drive end and a second, drive end. The modular drive system also includes a brake system coupled to the second end of the motor system, and a drive gear coupled to the motor shaft, the drive gear disposed between the first end and the brake system.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: HARNISCHFEGER TECHNOLOGIES, INC.
    Inventors: Nicholas R. Voelz, Joseph Colwell, David Wendt
  • Patent number: 8355847
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: January 15, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20120277959
    Abstract: Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
    Type: Application
    Filed: August 31, 2011
    Publication date: November 1, 2012
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20080318315
    Abstract: The invention is a reverse-flow method and system for the loading, proliferation and differentiation of cells into and throughout an implantable biocompatible three-dimensional scaffold.
    Type: Application
    Filed: March 4, 2005
    Publication date: December 25, 2008
    Inventors: Ivan Martin, David Wendt, Alessandra Braccini, Rodolfo Quatro, Marcel Jakob
  • Publication number: 20080103030
    Abstract: An exercise system includes a user input arrangement; a rotatable member that rotates in response to an input force applied by a user on the user input arrangement; a power sensing arrangement that senses power applied to the rotatable member due to the input force applied by the user; and a variable resistance arrangement interconnected with the power sensing arrangement and with the user input arrangement. The resistance arrangement applies resistance to rotation of the rotatable member, and is variable in response to the power sensing arrangement to vary the resistance applied to the rotatable member. The variable resistance arrangement may be a brake that interacts with the rotatable member to resist rotation of the rotatable member, and to thereby resist the input force applied by the user. The variable resistance arrangement includes a controller for controlling the brake in response to the power sensing arrangement.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 1, 2008
    Inventors: Edward Watson, David Wendt, Clint Kolda
  • Publication number: 20060234840
    Abstract: An exercise system includes a user input arrangement; a rotatable member that rotates in response to an input force applied by a user on the user input arrangement; a power sensing arrangement that senses power applied to the rotatable member due to the input force applied by the user; and a variable resistance arrangement interconnected with the power sensing arrangement and with the user input arrangement. The resistance arrangement applies resistance to rotation of the rotatable member, and is variable in response to the power sensing arrangement to vary the resistance applied to the rotatable member. The variable resistance arrangement may be a brake that interacts with the rotatable member to resist rotation of the rotatable member, and to thereby resist the input force applied by the user. The variable resistance arrangement includes a controller for controlling the brake in response to the power sensing arrangement.
    Type: Application
    Filed: March 23, 2006
    Publication date: October 19, 2006
    Inventors: Edward Watson, David Wendt, Clint Kolda
  • Patent number: 6993713
    Abstract: The present invention is a method, system, and computer program product for editing dynamic web content. In accordance with the present invention, dynamic web content, such as JSP files, can be edited using the concept of workspaces. This allows a dynamic content file to be edited without affecting its associated web site during the editing process. A dynamic content file, such as JSP file, is edited or updated within a workspace, while the original dynamic content file remains available to users outside of the workspace.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: January 31, 2006
    Assignee: International Business Machines Corporation
    Inventor: David Wendt
  • Patent number: 6985601
    Abstract: A hidden watermark and methods of detecting and embedding such watermark is provided. The watermark is resistant to efforts to avoid the message thereof.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: January 10, 2006
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Peter David Wendt