Patents by Inventor David Drennen
David Drennen 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: 20170241526Abstract: The present disclosure provides an actuator assembly having a ball nut comprising a helical track and a ball screw. The ball screw of the actuator assembly includes a first translation bearing track having a first diameter, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a first translation bearing ball is disposed. The ball screw further includes a second translation bearing track having a second diameter, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a second translation bearing ball is disposed. The first diameter and the second diameter are not equal.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Applicant: Goodrich CorporationInventors: David Drennen, Harald Klode, Kevin Rehfus, Satinder Mann, Marc Georgin, Robert French
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Publication number: 20170187265Abstract: An integrated actuator drive unit (ADU) assembly for an electric motor actuator is disclosed. The integrated ADU assembly may comprise at least one of an integrally formed ring gear, an integrally formed thrust bearing and integrally formed load cell. The integrated ADU assembly may comprise a portion of an electromechanical actuator. The electromechanical actuator may be utilized for aircraft braking systems.Type: ApplicationFiled: March 13, 2017Publication date: June 29, 2017Applicant: Goodrich CorporationInventors: David Drennen, Harald Klode, Kevin Rehfus
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Patent number: 9641044Abstract: An integrated actuator drive unit (ADU) assembly for an electric motor actuator is disclosed. The integrated ADU assembly may comprise at least one of an integrally formed ring gear, an integrally formed thrust bearing and integrally formed load cell. The integrated ADU assembly may comprise a portion of an electromechanical actuator. The electromechanical actuator may be utilized for aircraft braking systems.Type: GrantFiled: October 30, 2013Date of Patent: May 2, 2017Assignee: Goodrich CorporationInventors: David Drennen, Harald Klode, Kevin Rehfus
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Patent number: 9605723Abstract: The present disclosure provides an actuator assembly comprising a ballnut having a helical track, an actuator drive unit (“ADU”) housing having an ADU track, and a ballscrew. In various embodiments, the ballscrew comprises a first translation bearing track, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a plurality of first translation bearing balls having a first diameter are disposed, and a second translation bearing track, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a plurality of second translation bearing balls having a second diameter are disposed, wherein the first diameter and the second diameter are not equal.Type: GrantFiled: July 21, 2015Date of Patent: March 28, 2017Assignee: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen, Harald Klode
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Publication number: 20170080906Abstract: An electromechanical actuator is provided comprising a housing, a rotor disposed in the housing, an selective gearbox mechanically coupled to the rotor and disposed in the housing, a first output of the selective gearbox configured to rotate at a different speed than the rotor, and a second output of the selective gearbox configured to rotate at a same speed as the rotor.Type: ApplicationFiled: December 6, 2016Publication date: March 23, 2017Applicant: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen, Robert French
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Patent number: 9586678Abstract: The present disclosure provides devices and methods related to park brake systems and methods. In various embodiments, a park brake system may comprise a motor shaft having a first diameter portion and a second diameter portion, the second diameter portion having a greater diameter than the first diameter portion. A park brake system may further comprise a spring disposed at least partially around a circumference of the motor shaft, a wire coil disposed at least partially around a circumference of a bobbin, a one-way clutch disposed at least partially within the bobbin and coaxial to the motor shaft, an annular magnet disposed coaxial to the motor shaft and distal to at least a portion of the bobbin, and a clutch release mechanism disposed coaxial to the motor shaft and around the first diameter portion.Type: GrantFiled: January 15, 2015Date of Patent: March 7, 2017Assignee: United Technologies CorporationInventors: David Drennen, Kevin Rehfus, Robert French, Harald Klode
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Patent number: 9562579Abstract: A vented EMA may have a vent that allows gas to pass from into and out of the vented EMA, while preventing liquid from passing into and out of the vented EMA. The vented EMA may have a desiccant material inside the vented EMA that absorbs condensation from within the vented EMA. A vented EMA may also have an air flow path that conducts gas into and out of the vent during operation. As a result, the pressure inside the vented EMA may equalize with the pressure outside the vented EMA, but the deleterious ingress of liquids may be ameliorated.Type: GrantFiled: October 29, 2014Date of Patent: February 7, 2017Assignee: GOODRICH CORPORATIONInventors: Kevin Rehfus, Harald Klode, David Drennen
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Publication number: 20170023078Abstract: The present disclosure provides an actuator assembly comprising a ballnut having a helical track, an actuator drive unit (“ADU”) housing having an ADU track, and a ballscrew. In various embodiments, the ballscrew comprises a first translation bearing track, wherein the helical track and the first translation bearing track form a first translation bearing raceway in which a plurality of first translation bearing balls having a first diameter are disposed, and a second translation bearing track, wherein the helical track and the second translation bearing track form a second translation bearing raceway in which a plurality of second translation bearing balls having a second diameter are disposed, wherein the first diameter and the second diameter are not equal.Type: ApplicationFiled: July 21, 2015Publication date: January 26, 2017Applicant: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen, Harald Klode
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Publication number: 20170021920Abstract: Systems and methods are disclosed for aircraft braking and taxiing systems for use in, for example, an aircraft. In this regard, a system may comprise an electric motor and a clutch. The electric motor may include a first output shaft and a second output shaft. The clutch may selectively engaging the motor to at least one of a driver transmission and a brake transmission, wherein, in response to engagement with the driver transmission, the electric motor drives, exclusively, an aircraft wheel via the first output shaft, wherein, in response to engagement with the brake transmission, the electric motor drives, exclusively, a brake clamping system via the second output shaft to apply force to an aircraft brake disk stack.Type: ApplicationFiled: July 20, 2015Publication date: January 26, 2017Applicant: GOODRICH CORPORATIONInventors: David Drennen, Kevin Rehfus
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Patent number: 9545903Abstract: An electromechanical actuator is provided comprising a housing, a rotor disposed in the housing, an selective gearbox mechanically coupled to the rotor and disposed in the housing, a first output of the selective gearbox configured to rotate at a different speed than the rotor, and a second output of the selective gearbox configured to rotate at a same speed as the rotor.Type: GrantFiled: February 2, 2015Date of Patent: January 17, 2017Assignee: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen, Robert French
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Patent number: 9548643Abstract: A instrumented housing for an electric motor actuator is provided. The instrumented housing may have a ribbon gage coupled to a housing of an electrical motor actuator. The ribbon gage may have one or more strain gages. The strain gages may measure the tension on the housing when the electric motor actuator exerts a load. A cover may extend over at least a portion of the housing and ribbon gage.Type: GrantFiled: October 30, 2013Date of Patent: January 17, 2017Assignee: Goodrich CorporationInventors: Kevin Rehfus, Joseph E Beason, David Drennen, Harald Klode, Thomas Freshour, Jantzen Hinton
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Patent number: 9527584Abstract: An electromechanical actuator in an aircraft brake system may include a stationary body, an actuator drive unit in an actuator drive unit housing, a ball screw coupled to the actuator drive unit, and a ball nut piston coupled to the ball screw. A supplemental back drive mechanism may be disposed between the ball screw and the stationary body. The supplemental back drive mechanism may comprise a spring and a clutch. The spring may store back drive potential energy when the electromechanical actuator is actuated to drive the ball nut piston forward, and may supply back drive energy to the retract the ball nut piston.Type: GrantFiled: January 16, 2015Date of Patent: December 27, 2016Assignee: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen
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Patent number: 9482326Abstract: An electromechanical actuator (“EMA”) may comprise a ball screw having at least one tab extending from an inner surface thereof and/or an actuator drive unit (“ADU”) housing that interfaces with the at least one tab. The bail screw may include three tabs extending from the inner surface thereof. An outer surface of the ball screw may be threaded to mate with a threaded portion of an inner surface of the ADU housing, and/or the ADU housing may interface with the at least one tab, and the ball screw may be rotated to translate a ball nut situated concentrically over ball screw axially. The ADU housing may include a gear train assembly having a carrier plate, wherein the carrier plate includes at least one receptacle.Type: GrantFiled: July 3, 2013Date of Patent: November 1, 2016Assignee: Goodrich CorporationInventors: David Drennen, Harald Klode, Kevin Rehfus
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Patent number: 9482325Abstract: An electromechanical actuator (“EMA”) comprising an actuator drive unit (“ADU”) housing and a ball screw is disclosed. The ball screw and ADU housing may interface to form a multi-row thrust bearing (MRTB). Further, the ball screw may be situated at least partially about the ADU housing, an outer surface of the ADU housing may include a first ADU raceway, and an inner surface of the ball screw may include a second inner ball screw raceway. Either or both raceways may comprise hemispherical structures. Further, the first raceway and the second raceway may interface to form a multi-row thrust bearing (“MRTB”).Type: GrantFiled: July 3, 2013Date of Patent: November 1, 2016Assignee: GOODRICH CORPORATIONInventors: David Drennen, Harald Klode, Kevin Rehfus
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Publication number: 20160305501Abstract: The present disclosure provides an electromechanical brake actuator system comprising an electromechanical brake actuator coupled to a derived position sensor, the derived position sensor comprising a controller, a rotation sensor, and an output drive circuit. In various embodiments, the derived position sensor may be configured to receive a first motor shaft angular velocity at a first time, receive a second motor shaft angular velocity at a second time, calculate a linear translation distance, and sum the linear translation distance and a previous ram position to obtain an actual ram position.Type: ApplicationFiled: April 17, 2015Publication date: October 20, 2016Applicant: GOODRICH CORPORATIONInventors: Kevin Rehfus, Joseph E. Beason, David Drennen
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Publication number: 20160223415Abstract: The present disclosure includes the use of a smart load cell in a system for controlling an electromechanical actuator. A load cell may be positioned along the outer surface of the electromechanical actuator. Further, the load cell may utilize strain gages and a microcontroller. The load cell may be configured to transmit data to an electric brake actuator controller which includes calibration for operating temperature of the electromechanical actuator.Type: ApplicationFiled: February 3, 2015Publication date: August 4, 2016Applicant: GOODRICH CORPORATIONInventors: Joseph E. Beason, Kevin Rehfus, Albert Keith Pant, Thomas Freshour, Scott Streng, David Drennen
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Publication number: 20160221555Abstract: An electromechanical actuator is provided comprising a housing, a rotor disposed in the housing, an selective gearbox mechanically coupled to the rotor and disposed in the housing, a first output of the selective gearbox configured to rotate at a different speed than the rotor, and a second output of the selective gearbox configured to rotate at a same speed as the rotor.Type: ApplicationFiled: February 2, 2015Publication date: August 4, 2016Applicant: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen, Robert French
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Publication number: 20160207613Abstract: The present disclosure provides devices and methods related to park brake systems and methods. In various embodiments, a park brake system may comprise a motor shaft having a first diameter portion and a second diameter portion, the second diameter portion having a greater diameter than the first diameter portion. A park brake system may further comprise a spring disposed at least partially around a circumference of the motor shaft, a wire coil disposed at least partially around a circumference of a bobbin, a one-way clutch disposed at least partially within the bobbin and coaxial to the motor shaft, an annular magnet disposed coaxial to the motor shaft and distal to at least a portion of the bobbin, and a clutch release mechanism disposed coaxial to the motor shaft and around the first diameter portion.Type: ApplicationFiled: January 15, 2015Publication date: July 21, 2016Applicant: GOODRICH CORPORATIONInventors: David Drennen, Kevin Rehfus, Robert French, Harald Klode
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Publication number: 20160207614Abstract: An electromechanical actuator in an aircraft brake system may include a stationary body, an actuator drive unit in an actuator drive unit housing, a ball screw coupled to the actuator drive unit, and a ball nut piston coupled to the ball screw. A supplemental back drive mechanism may be disposed between the ball screw and the stationary body. The supplemental back drive mechanism may comprise a spring and a clutch. The spring may store back drive potential energy when the electromechanical actuator is actuated to drive the ball nut piston forward, and may supply back drive energy to the retract the ball nut piston.Type: ApplicationFiled: January 16, 2015Publication date: July 21, 2016Applicant: GOODRICH CORPORATIONInventors: Kevin Rehfus, David Drennen
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Patent number: 9359069Abstract: An electro-mechanical actuator including an aircraft parking brake may include a motor shaft, a park brake disk, and a voice coil assembly. The voice coil assembly may include a bobbin configured to translate between an engaged position and a disengaged position. An engagement feature may be coupled to the bobbin. The engagement feature may contact the park brake disk in the engaged position. The engagement feature may be magnetically coupled to a voice coil magnet and washer in the disengaged position.Type: GrantFiled: August 7, 2014Date of Patent: June 7, 2016Assignee: GOODRICH CORPORATIONInventors: David Drennen, Kevin Rehfus, Robert French, Albert Keith Pant, Joseph E. Beason, Harald Klode