Patents by Inventor Robert Keefover
Robert Keefover 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: 11267349Abstract: A common transformer used with an electric vehicle that includes a transformer core configured to receive electrical windings from a plurality of electrical circuits; an alternating current (AC) synchronous rectification (SR) circuit electrically connected to the transformer core via an AC winding; a high-voltage SR DC circuit electrically connected to the transformer core via a high-voltage DC winding; and a low-voltage DC SR circuit electrically connected to the transformer core via a low-voltage DC winding.Type: GrantFiled: December 23, 2019Date of Patent: March 8, 2022Assignee: BORGWARNER, INC.Inventors: Robert Keefover, Nicola Rosano
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Patent number: 11193399Abstract: A variable camshaft timing (VCT) assembly for controlling angular positions of concentric camshafts. The VCT assembly includes an independent VCT device and a dependent VCT device. The independent VCT device is hydraulically- or electrically-actuated. The independent VCT device is coupled with a first concentric camshaft and has a first component that rotates during phasing movements. The first component has a first set of slots therein. The dependent VCT device is coupled with a second concentric camshaft. The dependent VCT device has a second component that lacks rotation during phasing movements, and has multiple phase lugs. The second component has a second set of slots therein. The phase lugs are received in the first set of slots and are received in the second set of slots.Type: GrantFiled: November 27, 2019Date of Patent: December 7, 2021Assignee: BORGWARNER, INC.Inventors: Robert Keefover, Brian Thomas Kenyon
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Publication number: 20210188107Abstract: A common transformer used with an electric vehicle that includes a transformer core configured to receive electrical windings from a plurality of electrical circuits; an alternating current (AC) synchronous rectification (SR) circuit electrically connected to the transformer core via an AC winding; a high-voltage SR DC circuit electrically connected to the transformer core via a high-voltage DC winding; and a low-voltage DC SR circuit electrically connected to the transformer core via a low-voltage DC winding.Type: ApplicationFiled: December 23, 2019Publication date: June 24, 2021Inventors: Robert Keefover, Nicola Rosano
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Publication number: 20200165942Abstract: An electrically-actuated VCT device cascaded controller, comprises: a system processing device configured to receive inputs from one or more sensors and generate an output signal that is communicated to an electric phaser motor; the system processing device: receives data indicating an angular position of a camshaft relative to an angular position of a crankshaft at a primary control loop; receives data indicating an angular velocity of the crankshaft at a secondary control loop; and generates the output signal that controls the electric phaser motor using the primary control loop and the secondary control loop.Type: ApplicationFiled: November 21, 2019Publication date: May 28, 2020Inventor: Robert Keefover
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Publication number: 20200165943Abstract: A variable camshaft timing (VCT) assembly for controlling angular positions of concentric camshafts. The VCT assembly includes an independent VCT device and a dependent VCT device. The independent VCT device is hydraulically- or electrically-actuated. The independent VCT device is coupled with a first concentric camshaft and has a first component that rotates during phasing movements. The first component has a first set of slots therein. The dependent VCT device is coupled with a second concentric camshaft. The dependent VCT device has a second component that lacks rotation during phasing movements, and has multiple phase lugs. The second component has a second set of slots therein. The phase lugs are received in the first set of slots and are received in the second set of slots.Type: ApplicationFiled: November 27, 2019Publication date: May 28, 2020Inventors: Robert KEEFOVER, Brian Thomas KENYON
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Patent number: 10041420Abstract: A valve assembly includes a valve housing defining a bore with a first axis extending along a length of the bore, and a valve shaft partially disposed within the bore along a second axis that is perpendicular to the first axis. The valve assembly additionally includes a valve plate coupled to the valve shaft and disposed within the bore, and a restricting device including a stop member and an engagement member. The stop member extends from the valve housing and presents a stop surface. The engagement member extends from the valve shaft and presents an engagement surface. At least one of the stop surface and the engagement surface is non-parallel with the second axis. The at least one non-parallel surface engages the other of the stop member and the engagement member and biases the valve shaft axially along the second axis.Type: GrantFiled: August 31, 2016Date of Patent: August 7, 2018Assignee: BorgWarner Inc.Inventors: Aaron Feiner, Robert Keefover, Brenda L. Horn, Petr Malik
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Publication number: 20180058342Abstract: A valve assembly includes a valve housing defining a bore with a first axis extending along a length of the bore, and a valve shaft partially disposed within the bore along a second axis that is perpendicular to the first axis. The valve assembly additionally includes a valve plate coupled to the valve shaft and disposed within the bore, and a restricting device including a stop member and an engagement member. The stop member extends from the valve housing and presents a stop surface. The engagement member extends from the valve shaft and presents an engagement surface. At least one of the stop surface and the engagement surface is non-parallel with the second axis. The at least one non-parallel surface engages the other of the stop member and the engagement member and biases the valve shaft axially along the second axis.Type: ApplicationFiled: August 31, 2016Publication date: March 1, 2018Inventors: Aaron Feiner, Robert Keefover, Brenda L. Horn, Petr Malik
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Patent number: 9587592Abstract: A number of variations may include a product, which may include an actuator including a rotatory portion for moving a valve from a first position to a second position and a biasing spring for retuning the valve to the first position.Type: GrantFiled: November 14, 2014Date of Patent: March 7, 2017Assignee: BorgWarner Inc.Inventors: Robert Keefover, Aaron Feiner
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Patent number: 9140218Abstract: A number of variations may include a product, which may include an actuator including a rotatory portion for moving a valve from a first position to a second position and a biasing spring for retuning the valve to the first position.Type: GrantFiled: December 2, 2014Date of Patent: September 22, 2015Assignee: BorgWarner Inc.Inventors: Robert Keefover, Aaron Feiner
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Publication number: 20150159594Abstract: A number of variations may include a product, which may include an actuator including a rotatory portion for moving a valve from a first position to a second position and a biasing spring for retuning the valve to the first position.Type: ApplicationFiled: November 14, 2014Publication date: June 11, 2015Inventors: Robert KEEFOVER, Aaron FEINER
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Publication number: 20150159595Abstract: A number of variations may include a product, which may include an actuator including a rotatory portion for moving a valve from a first position to a second position and a biasing spring for retuning the valve to the first position.Type: ApplicationFiled: December 2, 2014Publication date: June 11, 2015Inventors: Robert KEEFOVER, Aaron FEINER
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Patent number: 8585012Abstract: A method for controlling an actuator, such as the type used to drive valves, vanes, and other variable position devices. In one exemplary embodiment, a method may improve the accuracy of actuator feedback by periodically or dynamically resetting the position of a lower hard stop, which can then be used as a future point of reference.Type: GrantFiled: April 1, 2009Date of Patent: November 19, 2013Assignee: BorgWarner Inc.Inventors: Joseph F. Labataille, Robert Keefover, Matthew E. Junker
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Publication number: 20110260083Abstract: A method for controlling an actuator, such as the type used to drive valves, vanes, and other variable position devices. In one exemplary embodiment, a method may improve the accuracy of actuator feedback by periodically or dynamically resetting the position of a lower hard stop, which can then be used as a future point of reference.Type: ApplicationFiled: April 1, 2009Publication date: October 27, 2011Applicant: BorgWarner Inc.Inventors: Joseph F. Labataille, Robert Keefover, Matthew E. Junker
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Publication number: 20100293922Abstract: A method including obtaining information representative of the amount of oxides of nitrogen and the amount of particulate matter being produced by a combustion engine, and adjusting the amount of oxides of nitrogen and the amount of particulate matter being produced by the combustion engine by controlling the amount of combustion engine exhaust gas re-circulating through an EGR cooler and through an EGR cooler bypass line using the information.Type: ApplicationFiled: May 21, 2007Publication date: November 25, 2010Applicant: BORGWARNER INC.Inventors: Matt Delavan, Robert Keefover, Murray Busato
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Publication number: 20070113825Abstract: A control system having a housing with a bore formed within the housing. A valve member is associated with the bore for controlling the passage of a fluid medium through the bore. An induction sensor is aligned with the valve and facilitates determining the valve position. An inductor is connected to an end of the valve member that is in close proximity to the induction sensor. It is contemplated that this control system can be used in a number of different applications including throttle control systems, turbo actuators, canister purge systems and shift control mechanisms. However, it is within the scope of this invention to incorporate the control system on virtually any type of vehicle system where it is possible to determine the position of a valve utilizing induction sensor technology.Type: ApplicationFiled: January 19, 2007Publication date: May 24, 2007Applicant: BorgWarner Inc.Inventors: Robert Keefover, Michael Halsig, Hal Pringle
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Publication number: 20070113824Abstract: An electronic throttle control system is described. The system includes a non-contacting sensor stator integrated into an electronic throttle body and is aligned to the sensor rotor attached to the shaft to properly set sensor air gap by assembly aids or by close fit to the throttle body. A motor and vehicle connector is electrically connected to the sensor stator but is allowed to be positioned separately from the sensor stator by means of a flexible interconnect.Type: ApplicationFiled: January 19, 2007Publication date: May 24, 2007Applicant: BorgWarner Inc.Inventors: Robert Keefover, Michael Halsig, Hal Pringle
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Publication number: 20070080599Abstract: The present invention relates to a motor having a stator with a magnetized rotor rotatably positioned in the stator. The stator and the rotor each have at least two magnetic poles. At least one of the stator poles has a different area confronting the poles of the rotor than the other stator poles. An air gap is positioned between each of the at least two stator poles and at least two rotor poles. The distance of the air gap between each stator pole and each rotor pole is different. A coil is wound upon a bobbin which is placed about at least one of the stator poles. Altering the confronting area of the stator poles allows a larger bobbin and coil to be placed about the stator pole.Type: ApplicationFiled: October 6, 2005Publication date: April 12, 2007Applicant: BorgWarner Inc.Inventors: Robert Telep, Robert Keefover
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Publication number: 20060237675Abstract: The present invention is directed to an exhaust gas recirculation valve incorporating a DC motor and a dual poppet valve assembly. A motor is contained inside of the actuator housing. The motor has a rotatable motor shaft with a first gear connected to the end of the motor shaft. A second gear is engageable to the first gear and is configured to rotate in response to the movement of the first gear and the motor shaft. The second gear is also connected to a pin member disposed through the top portion of a shaft member that has two poppet valves disposed on to the shaft. The two ends of the pin member are slidably engageable to either an upwardly or downwardly sloped ramp portion. When the second gear rotates the shaft rotates and moves upward or downward to cause the valve members to move between an open and closed position.Type: ApplicationFiled: June 15, 2006Publication date: October 26, 2006Applicant: BorgWarner Inc.Inventors: Robert Telep, Robert Keefover, Michael Halsig
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Publication number: 20060166519Abstract: Many devices, such as a turbocharger, use an apparatus to control their functions. For example, pneumatic and electric actuators are used to provide positional control of a mechanism on the turbocharger. The actuator must connect to the vehicles electrical system to provide suitable communication and control of the actuator. They must also have internal control and interconnection of devices such as sensors, electronic control unit, external electrical connector, and internal electrical connections. The electrical connections, placement of sensor, and placement of the controller are critical to the performance, reliability, and cost of the actuator. The control and interconnection system will provide the aforementioned requirements including a “quick connect” capability for electrical connections and ease of assembly.Type: ApplicationFiled: January 19, 2006Publication date: July 27, 2006Applicant: BorgWarner Inc.Inventors: Robert Telep, Robert Keefover, Murray Busato, Donald Podwoiski
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Publication number: 20060081228Abstract: The present invention is directed to an EGR valve having a housing with a primary passage and a secondary passage. A poppet valve is used to separate or control the flow of fluid from the secondary passage to the primary passage. The valve shaft has a longitudinal axis that extends through the primary passage at a location other than the centerline axis of the primary passage. Additionally, the present invention has a mixing furrow located along the interior surface of the primary passage that will cause gasses flowing from the secondary passage to the primary passage to swirl and mix prior to being introduced to the intake manifold of an engine.Type: ApplicationFiled: September 27, 2005Publication date: April 20, 2006Applicant: BorgWarner Inc.Inventors: Robert Keefover, Michael Halsig