Patents by Inventor Kenneth W. Johnson
Kenneth W. 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).
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Publication number: 20240125385Abstract: A zero turning radius mower park brake system includes a park brake pawl on a transmission which engages a park brake to a pair of independently driven traction wheels. A park brake link may be pivotably mounted to the park brake pawl and connected to a left steering lever and a right steering lever. The park brake link may pivot while moving the park brake pawl forward to a park brake engaged position if only one of the steering levers is moved outward from a neutral traction drive position.Type: ApplicationFiled: October 18, 2022Publication date: April 18, 2024Inventors: JOSEAN J. MARTINEZ ACOSTA, THOMAS M. MESSINA, KENNETH M. REEP, WILLIAM P. JOHNSON, DAVID W. GEIGER, Margaret K. Martin
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Patent number: 10358513Abstract: Improved Ziegler-Natta catalysts and methods of making the improved catalyst are described. The Ziegler-Natta catalyst is formed using a spherical MgCl2-xROH support, where R is a linear, cyclic or branched hydrocarbon unit with 1-10 carbon atoms and where ROH is an alcohol or a mixture of at least two different alcohols and where x has a range of about 1.5 to 6.0, preferably about 2.5 to 4, more preferably about 2.9 to 3.4, and even more preferably 2.95 to 3.35. The Ziegler-Natta catalyst includes a Group 4-8 transition metal and an internal donor. The catalyst has improved activity in olefin polymerization reactions as well as good stereoregularity and hydrogen sensitivity.Type: GrantFiled: June 10, 2009Date of Patent: July 23, 2019Assignee: Lummus Novolen Technology GmbHInventors: Douglas D. Klendworth, Kenneth W. Johnson, Andreas Winter, Franz Langhauser
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Patent number: 9671427Abstract: A high-voltage active measurement probe is for a measurement instrument such as an oscilloscope. The high voltage active measurement probe includes an input terminal configured to receive an input signal from a device under test (DUT), a first output terminal configured to transmit a first output signal to the measurement instrument for measurement and display of peak voltages, and a second output terminal configured to transmit a second output signal to the measurement instrument for high sensitivity measurement and display of low level voltages. A first probe signal path is between the input terminal and the first output terminal, and a second probe signal path between the input terminal and the second output terminal. A first amplifier is in the first probe signal path between the input terminal and the first output terminal, and a second amplifier is in the second probe signal path between the input terminal and the second output terminal.Type: GrantFiled: January 19, 2016Date of Patent: June 6, 2017Assignee: Keysight Technologies, Inc.Inventors: Kenneth W. Johnson, Edward Vernon Brush, IV
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Patent number: 9459290Abstract: An oscilloscope system includes a current probe, a processing unit and a display unit. The current probe includes a high and low gain signal paths for receiving simultaneously a signal of interest from a device under test (DUT), and to output amplified small and large current portions of the signal of interest, respectively. The processing unit receives first and second digitized data corresponding to the amplified small and large current portions output by the high and low gain signal paths, respectively, and processes the first and second digitized data for display as zoomed-in and zoomed-out waveform data, respectively. The display unit displays simultaneously a zoomed-in waveform in a first display window, based on the zoomed-in waveform data, and a zoomed-out waveform in a second display window, based on the zoomed-out waveform data, using the same time scale. The small current portion is less than a predetermined threshold.Type: GrantFiled: April 30, 2013Date of Patent: October 4, 2016Assignee: Keysight Technologies, Inc.Inventors: Kenneth W. Johnson, Edward Vernon Brush, IV, Michael T. McTigue
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Patent number: 9423422Abstract: A probe for a measurement instrument comprises an input terminal configured to receive an input signal from a device under test (DUT), an output terminal configured to transmit an output signal to a measurement instrument, and a clamping circuit disposed in a signal path between the input terminal and the output terminal and configured to clamp an internal probe signal between an upper clamping threshold and a lower clamping threshold to produce the output signal, wherein the clamping circuit operates with substantial gain and amplitude linearity throughout a range between the upper clamping threshold and the lower clamping threshold.Type: GrantFiled: April 24, 2013Date of Patent: August 23, 2016Assignee: Keysight Technologies, Inc.Inventors: Edward Vernon Brush, IV, Michael T. McTigue, Kenneth W. Johnson
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Publication number: 20160139178Abstract: A high-voltage active measurement probe is for a measurement instrument such as an oscilloscope. The high voltage active measurement probe includes an input terminal configured to receive an input signal from a device under test (DUT), a first output terminal configured to transmit a first output signal to the measurement instrument for measurement and display of peak voltages, and a second output terminal configured to transmit a second output signal to the measurement instrument for high sensitivity measurement and display of low level voltages. A first probe signal path is between the input terminal and the first output terminal, and a second probe signal path between the input terminal and the second output terminal. A first amplifier is in the first probe signal path between the input terminal and the first output terminal, and a second amplifier is in the second probe signal path between the input terminal and the second output terminal.Type: ApplicationFiled: January 19, 2016Publication date: May 19, 2016Inventors: Kenneth W. Johnson, Edward Vernon Brush, IV
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Patent number: 9316669Abstract: A measurement probe comprises at least one input port configured to receive an input signal generated in relation to a device under test (DUT), and an amplification unit configured to amplify the input signal with a first gain where the input signal has a first amplitude, and further configured to amplify the input signal with a second gain lower than the first gain where the input signal has a second amplitude greater than the first amplitude.Type: GrantFiled: June 28, 2013Date of Patent: April 19, 2016Assignee: Keysight Technologies, Inc.Inventors: Michael T. McTigue, Kenneth W. Johnson, Edward Vernon Brush, IV
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Patent number: 9304150Abstract: A current probe enabling measurement of current of a signal in a circuit includes a ferrite core defining a gap, a wire wrapped around the ferrite core and a magnetic field sensor. The wire is configured to receive the signal from the circuit, where the current of the signal flowing in the wire generates a magnetic field in the ferrite core. The magnetic field sensor is positioned in the gap of the ferrite core, the magnetic field generated in the ferrite core flowing through the magnetic field sensor, which produces a voltage proportional to an intensity of the magnetic field. The current is measured based on the voltage produced by the magnetic field sensor.Type: GrantFiled: September 30, 2011Date of Patent: April 5, 2016Assignee: Keysight Technologies, Inc.Inventor: Kenneth W. Johnson
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Patent number: 9188606Abstract: An oscilloscope current probe system includes a probe amplifier unit, a probe head identifier, and first and second probe heads interchangeably connectable to the probe amplifier unit. Each probe head has a respective electrically-readable type identifier, a respective current input to receive a current to be measured, a respective internal sensing resistor in connected series with the current input, and a respective output at which a measurement voltage across the sensing resistor is output. The first and second probe heads differ in the resistance of their sensing resistors and the way their type identifiers read. The probe amplifier unit includes a differential amplifier to amplify the measurement voltage output by the probe head connected thereto. The probe head identifier is to read the type identifier of the probe head connected to the probe amplifier unit.Type: GrantFiled: April 29, 2013Date of Patent: November 17, 2015Assignee: Keysight Technologies, Inc.Inventors: Kenneth W. Johnson, Edward Vernon Brush, IV
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Publication number: 20150002136Abstract: A measurement probe comprises at least one input port configured to receive an input signal generated in relation to a device under test (DUT), and an amplification unit configured to amplify the input signal with a first gain where the input signal has a first amplitude, and further configured to amplify the input signal with a second gain lower than the first gain where the input signal has a second amplitude greater than the first amplitude.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Michael T. McTigue, Kenneth W. Johnson, Edward Vernon Brush, IV
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Publication number: 20140320157Abstract: A probe for a measurement instrument comprises an input terminal configured to receive an input signal from a device under test (DUT), an output terminal configured to transmit an output signal to a measurement instrument, and a clamping circuit disposed in a signal path between the input terminal and the output terminal and configured to clamp an internal probe signal between an upper clamping threshold and a lower clamping threshold to produce the output signal, wherein the clamping circuit operates with substantial gain and amplitude linearity throughout a range between the upper clamping threshold and the lower clamping threshold.Type: ApplicationFiled: April 24, 2013Publication date: October 30, 2014Applicant: Agilent Technologies, Inc.Inventors: Edward Vernon BRUSH, IV, Michael T. MCTIGUE, Kenneth W. JOHNSON
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Publication number: 20140320153Abstract: An oscilloscope current probe system includes a probe amplifier unit, a probe head identifier, and first and second probe heads interchangeably connectable to the probe amplifier unit. Each probe head has a respective electrically-readable type identifier, a respective current input to receive a current to be measured, a respective internal sensing resistor in connected series with the current input, and a respective output at which a measurement voltage across the sensing resistor is output. The first and second probe heads differ in the resistance of their sensing resistors and the way their type identifiers read. The probe amplifier unit includes a differential amplifier to amplify the measurement voltage output by the probe head connected thereto. The probe head identifier is to read the type identifier of the probe head connected to the probe amplifier unit.Type: ApplicationFiled: April 29, 2013Publication date: October 30, 2014Applicant: Agilent Technologies, Inc.Inventors: Kenneth W. JOHNSON, Edward Vernon BRUSH, IV
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Publication number: 20140320145Abstract: An oscilloscope system includes a current probe, a processing unit and a display unit. The current probe includes a high and low gain signal paths for receiving simultaneously a signal of interest from a device under test (DUT), and to output amplified small and large current portions of the signal of interest, respectively. The processing unit receives first and second digitized data corresponding to the amplified small and large current portions output by the high and low gain signal paths, respectively, and processes the first and second digitized data for display as zoomed-in and zoomed-out waveform data, respectively. The display unit displays simultaneously a zoomed-in waveform in a first display window, based on the zoomed-in waveform data, and a zoomed-out waveform in a second display window, based on the zoomed-out waveform data, using the same time scale. The small current portion is less than a predetermined threshold.Type: ApplicationFiled: April 30, 2013Publication date: October 30, 2014Applicant: AGILENT TECHNOLOGIES, INC.Inventors: Kenneth W. Johnson, Edward Vernon Brush, IV, Michael T. McTigue
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Publication number: 20140208636Abstract: The present invention provides an environmentally safe and highly effective method for killing bed bugs by enclosing infested items, belongings or possessions in a sealed container along with a small amount of certain solvents, the vapors of which kill bed bugs that are present.Type: ApplicationFiled: March 28, 2014Publication date: July 31, 2014Applicant: FMC CORPORATIONInventors: Bruce C. Black, Shreya N. Sheth, Linda Varanyak, Kenneth W. Johnson, Michael J. Manning
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Patent number: 8707616Abstract: The present invention provides an environmentally safe and highly effective method for killing bed bugs by enclosing infested items, belongings or possessions in a sealed container along with a small amount of certain solvents, the vapors of which kill bed bugs that are present.Type: GrantFiled: March 15, 2011Date of Patent: April 29, 2014Assignee: FMC CorporationInventors: Bruce C. Black, Shreya N. Sheth, Linda A. Varanyak, Kenneth W. Johnson, Michael J. Manning
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Publication number: 20130106401Abstract: A system comprises an oscilloscope and an oscilloscope probe having a status indicator. The status indicator is located on a probe head of the oscilloscope probe and is configured to convey information to a user to indicate at least one characteristic of the signal. In certain embodiments, the status indicator comprises a light or a screen to convey signal related information to the user.Type: ApplicationFiled: October 31, 2011Publication date: May 2, 2013Applicant: AGILENT TECHNOLOGIES, INC.Inventors: Kenneth W. JOHNSON, Michael T. MCTIGUE
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Publication number: 20130082695Abstract: A current probe enabling measurement of current of a signal in a circuit includes a ferrite core defining a gap, a wire wrapped around the ferrite core and a magnetic field sensor. The wire is configured to receive the signal from the circuit, where the current of the signal flowing in the wire generates a magnetic field in the ferrite core. The magnetic field sensor is positioned in the gap of the ferrite core, the magnetic field generated in the ferrite core flowing through the magnetic field sensor, which produces a voltage proportional to an intensity of the magnetic field. The current is measured based on the voltage produced by the magnetic field sensor.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Kenneth W. Johnson
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Publication number: 20100069586Abstract: Improved Ziegler-Natta catalysts and methods of making the improved catalyst are described. The Ziegler-Natta catalyst is formed using a spherical MgCl2-xROH support, where R is a linear, cyclic or branched hydrocarbon unit with 1-10 carbon atoms and where ROH is an alcohol or a mixture of at least two different alcohols and where x has a range of about 1.5 to 6.0, preferably about 2.5 to 4, more preferably about 2.9 to 3.4, and even more preferably 2.95 to 3.35. The Ziegler-Natta catalyst includes a Group 4-8 transition metal and an internal donor. The catalyst has improved activity in olefin polymerization reactions as well as good stereoregularity and hydrogen sensitivity.Type: ApplicationFiled: June 10, 2009Publication date: March 18, 2010Inventors: Douglas D. Klendworth, Kenneth W. Johnson, Andreas Winter, Franz Langhauser
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Patent number: 7594879Abstract: A rotary rehabilitation apparatus is presented for rehabilitation of a person's extremity, including the joints and assorted muscles, tendons, ligaments, that can be tailored to the person's needs based upon their physical size, type of injury, and plan for recovery. The apparatus facilitates the adjustment of the range of motion of the user's extremity in a cycling action by offsetting a moveable lever from a fixed lever at a plurality of angles. As the user's extremity moves in a circular path, the extremity engages in extension and flexion to cause movements in the articulations formed at the user's joints.Type: GrantFiled: November 23, 2004Date of Patent: September 29, 2009Assignee: Brainchild LLCInventor: Kenneth W. Johnson
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Patent number: 7531899Abstract: An apparatus and method includes an integrated circuit disposed in a ball grid array (“BGA”) package having interconnects on at least one corner without signal assignments.Type: GrantFiled: April 17, 2006Date of Patent: May 12, 2009Assignee: Agilent Technologies, Inc.Inventor: Kenneth W Johnson