Patents by Inventor Lee Sykes
Lee Sykes 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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Patent number: 8844697Abstract: A clutch assembly is disclosed having a driving plate arranged in communication with a thermal transfer medium for use in cooling the driving plate. The disclosed thermal transfer medium can include at least one conductive brush that is mounted with the driving plate and arranged between the driving plate and a separate cooled part of the clutch assembly for cooling the driving plate. The brush may also be resiliently biased for contact with the cooled part of the clutch assembly so that it brushes against it.Type: GrantFiled: November 13, 2012Date of Patent: September 30, 2014Assignee: Ricardo UK LtdInventors: Jonathan Charles Wheals, Lee Sykes
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Patent number: 8333272Abstract: A dual clutch transmission has a driving plate defining concentric engagement surfaces, concentric friction plates, concentric pressure plates, and first and second clutch springs for operation of the pressure plates in clamping the friction plates against their respective engagement surface on the driving plate. The driving plate has a top hat type configuration, whereby the engagement surfaces are axially off set from one another. Cooling passages may be provided in the driving plate. The dct is preferably nested, wherein the outer pressure plate is in axial alignment with the radially inner portion of the driving plate, the inner pressure plate is in axial alignment with the radially outer portion of the driving plate, and the friction plates are arranged in axial alignment with one another.Type: GrantFiled: October 15, 2007Date of Patent: December 18, 2012Assignee: Ricardo UK LtdInventors: Jonathan Charles Wheals, Lee Sykes
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Patent number: 8269465Abstract: A circuit charges and maintains a battery. The circuit includes a microprocessor for receiving a current sense signal and a voltage sense signal. The microprocessor generates control signals for selectively operating the circuit in a charging mode and in a maintenance mode. The circuit includes a current sense circuit for measuring the battery's current consumption and generating the current sense signal responsive to the measured current consumption. The circuit includes a voltage sense circuit for measuring the battery's voltage and generating the voltage sense signal responsive to the measured battery voltage. The circuit includes a waveform generator circuit for receiving the control signals, and operating in response thereto to apply a charging signal to the battery when in the charging mode and to deactivate the charging signal when in the maintenance mode. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal.Type: GrantFiled: September 25, 2008Date of Patent: September 18, 2012Assignee: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Patent number: 8269466Abstract: A method for charging a battery includes measuring the battery's voltage and comparing the battery voltage to a first threshold voltage. The method includes operating the battery in a charging mode if the measured battery voltage is less than the first threshold voltage, wherein operating in the charging mode comprises applying a charging signal to the battery. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal. The method includes measuring the battery's current consumption and comparing the current consumption to a first threshold current. The method includes operating in a maintenance mode if the battery's current consumption is less than the first threshold current, wherein operating in the maintenance mode comprises terminating application of the charging signal to the battery. The method includes measuring, during operation in the maintenance mode, the battery's voltage and comparing the measured voltage to a second threshold voltage.Type: GrantFiled: September 25, 2008Date of Patent: September 18, 2012Assignee: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Patent number: 7834592Abstract: A circuit includes a pulse transformer having primary and secondary windings. An oscillating waveform is applied to the primary winding to induce an oscillating waveform at the secondary winding. A transistor in series with a first resistor is coupled between the secondary winding and the ground. An R-C network formed by a second and a third resistor and a capacitor is coupled to a base junction of the transistor. The R-C network causes a slow, tapered linear pinch off of the transistor's conductance to enable the circuit to output a triangular waveform, which is characterized by a relatively short linear rise time followed by a substantially long linear fall time. The R-C network is coupled to the secondary winding via a first and a second diode, respectively.Type: GrantFiled: September 25, 2008Date of Patent: November 16, 2010Assignee: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Publication number: 20100044178Abstract: A dual clutch transmission has a driving plate defining concentric engagement surfaces, concentric friction plates, concentric pressure plates, and first and second clutch springs for operation of the pressure plates in clamping the friction plates against their respective engagement surface on the driving plate. The driving plate has a top hat type configuration, whereby the engagement surfaces are axially off set from one another. Cooling passages may be provided in the driving plate. The dct is preferably nested, wherein the outer pressure plate is in axial alignment with the radially inner portion of the driving plate, the inner pressure plate is in axial alignment with the radially outer portion of the driving plate, and the friction plates are arranged in axial alignment with one another.Type: ApplicationFiled: October 15, 2007Publication date: February 25, 2010Applicant: RICARDO UK LTD.Inventors: Jonathan Charles Wheals, Lee Sykes
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Publication number: 20090085525Abstract: A method for charging a battery includes measuring the battery's voltage and comparing the battery voltage to a first threshold voltage. The method includes operating the battery in a charging mode if the measured battery voltage is less than the first threshold voltage, wherein operating in the charging mode comprises applying a charging signal to the battery. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal. The method includes measuring the battery's current consumption and comparing the current consumption to a first threshold current. The method includes operating in a maintenance mode if the battery's current consumption is less than the first threshold current, wherein operating in the maintenance mode comprises terminating application of the charging signal to the battery. The method includes measuring, during operation in the maintenance mode, the battery's voltage and comparing the measured voltage to a second threshold voltage.Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Publication number: 20090085526Abstract: A circuit includes a pulse transformer having primary and secondary windings. An oscillating waveform is applied to the primary winding to induce an oscillating waveform at the secondary winding. A transistor in series with a first resistor is coupled between the secondary winding and the ground. An R-C network formed by a second and a third resistor and a capacitor is coupled to a base junction of the transistor. The R-C network causes a slow, tapered linear pinch off of the transistor's conductance to enable the circuit to output a triangular waveform, which is characterized by a relatively short linear rise time followed by a substantially long linear fall time. The R-C network is coupled to the secondary winding via a first and a second diode, respectively.Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Publication number: 20090085524Abstract: A circuit charges and maintains a battery. The circuit includes a microprocessor for receiving a current sense signal and a voltage sense signal. The microprocessor generates control signals for selectively operating the circuit in a charging mode and in a maintenance mode. The circuit includes a current sense circuit for measuring the battery's current consumption and generating the current sense signal responsive to the measured current consumption. The circuit includes a voltage sense circuit for measuring the battery's voltage and generating the voltage sense signal responsive to the measured battery voltage. The circuit includes a waveform generator circuit for receiving the control signals, and operating in response thereto to apply a charging signal to the battery when in the charging mode and to deactivate the charging signal when in the maintenance mode. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal.Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: PulseTech Products CorporationInventors: Pete Ward Smith, James Earl Huffman, David Lee Sykes, Clyde Ray Calcote
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Patent number: 6162522Abstract: A loop material suitable for use with a hook-and-loop fastening system, wherein the loop material includes a first fibrous nonwoven web having a first surface and a second surface and includes carded sheath-core bicomponent staple fibers in which the fibers have a sheath-core melting point differential of at least about 20.degree. C. and a length of from about 10 mm to about 65 mm. The first fibrous nonwoven web has a thickness of at least about 0.15 mm and a basis weight of at least about 20 grams per square meter; a pattern on the first surface thereof of continuous bonded areas defining a plurality of discrete unbonded areas formed by the application of heat and pressure, wherein individual fibers within the discrete unbonded areas have at least a portion thereof extending into and bonded within the continuous bonded areas; and a percent bonded area of from about 20 to about 50 percent. If desired, a film layer may be bonded to the second surface of the first fibrous nonwoven web.Type: GrantFiled: June 19, 1998Date of Patent: December 19, 2000Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Ganesh Chandra Deka, Samuel Lee Sykes