Patents by Inventor Carl S. Silbernagel

Carl S. Silbernagel 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: 8056695
    Abstract: An adaptive soft start system for mower blade clutch engagement includes an engine speed sensor providing engine speed inputs to a microcontroller that provides electrical power to an electromagnetic clutch for engaging an engine to at least one mower blade. The microcontroller repeatedly computes the rate of change of engine speed during mower blade clutch engagement and modulates the electrical power to the electromagnetic clutch each time the rate of change of engine speed is outside minimum or maximum thresholds.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: November 15, 2011
    Assignee: Deere & Company
    Inventor: Carl S. Silbernagel
  • Patent number: 7726251
    Abstract: A seeding machine having a plurality of row units and a processing circuit. Each of the row units have a seed metering device, a seed placement device and a sensor suitable to detect a parameter related to seed placement. The seed metering device includes a metering member providing a metering action to a plurality of seeds. The seed placement device receives the seeds from the seed metering device. A seed meter drive controller receives an index signal from the sensor on the row unit as well as a reference pulse signal. The processing signal of the drive controllers compares the index signal to the reference signal. Each drive controller is selectively programmable to control an associated motor of the meter drive to produce a desired relationship between the row unit index signal and the reference signal thereby synchronizing the seed placement among two or more rows. block diagram illustrating an alternative arrangement of the meter drive and control system components.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: June 1, 2010
    Assignee: Deere & Company
    Inventors: James R. Peterson, Nathan A. Mariman, Carl S. Silbernagel, Samuel Santiago, Jason D. Walter, Ron G. Landman
  • Patent number: 7669393
    Abstract: A stall detection system for mower blade clutch engagement determines if there is a stall condition by sensing one or more operating conditions such as engine deceleration or blade spindle rotation. If a stall condition is detected, a microcontroller shuts off actuating current to the electric clutch coil and automatically disengages or discontinues engagement of the clutch. The microcontroller may also provide a signal to inform the operator of the stall condition, and prevent repeated activation of the clutch until the stall condition is corrected.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: March 2, 2010
    Assignee: Deere & Company
    Inventors: David G. Park, Carl S. Silbernagel
  • Publication number: 20100005768
    Abstract: An adaptive soft start system for mower blade clutch engagement includes an engine speed sensor providing engine speed inputs to a microcontroller that provides electrical power to an electromagnetic clutch for engaging an engine to at least one mower blade. The microcontroller repeatedly computes the rate of change of engine speed during mower blade clutch engagement and modulates the electrical power to the electromagnetic clutch each time the rate of change of engine speed is outside minimum or maximum thresholds.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 14, 2010
    Inventor: Carl S. Silbernagel
  • Publication number: 20090277743
    Abstract: A stall detection system for mower blade clutch engagement determines if there is a stall condition by sensing one or more operating conditions such as engine deceleration or blade spindle rotation. If a stall condition is detected, a microcontroller shuts off actuating current to the electric clutch coil and automatically disengages or discontinues engagement of the clutch. The microcontroller may also provide a signal to inform the operator of the stall condition, and prevent repeated activation of the clutch until the stall condition is corrected.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 12, 2009
    Inventors: David G. Park, Carl S. Silbernagel
  • Patent number: 6928792
    Abstract: A wrap material dispensing system for a round baler includes a wrap material drive system for advancing wrap material from a supply roll to a wrap material feeding arrangement, and a selectively operable knife mechanism for severing the wrap material. The wrap material drive arrangement includes a pair of rollers that are driven by a motor. The knife mechanism is mounted to a pivotable shaft to which a one-way knife actuating clutch is mounted. A flexible drive member, such as a chain, is engaged with a rotatable output member of the drive motor, and with the one-way knife actuating clutch and a driven one of the wrap material drive rollers. Operation of the motor to rotate the motor output member in a first direction causes advancement of the wrap material, and the one-way knife actuating clutch is configured to maintain the knife mechanism in an inoperable rest position during advancement of the wrap material.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: August 16, 2005
    Assignee: Gehl Company
    Inventors: Kim P. Viesselmann, Scott V. Grahl, Carl S. Silbernagel, Anthony J. Glaszcz
  • Patent number: 6774805
    Abstract: An operation sensor for a wrap material dispensing system of a round baler. The operation sensor includes a rotatable member with which the wrap material is engaged, and which rotates along with the wrap material as the wrap material is fed to a wrap material feeding arrangement for introduction into the round baler. Rotation of the rotatable member is detected by a sensing arrangement, which is interconnected with a visual display for providing a user with a visual indication as to the rate of advancement of the wrap material.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: August 10, 2004
    Assignee: Gehl Company
    Inventors: Kim P. Viesselmann, Scott V. Grahl, Carl S. Silbernagel