Patents by Inventor David Chandler

David Chandler 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: 11002161
    Abstract: A switchable lever arrangement is provided that includes at least one switchable lever and a rotary actuator. The at least one switchable lever includes an outer lever, an inner lever pivotably mounted to the outer lever, and a locking part that selectively locks the inner lever to the outer lever. The rotary actuator rotates about a rotational axis to actuate the locking part. The rotary actuator has a first locked position defined by a first effective actuation length, and a second unlocked position defined by a second effective actuation length, with the second actuation length different than the first actuation length.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: May 11, 2021
    Inventors: Faheem Ahmed, Sumukha Nagaraj, Béla Hofer, David Chandler
  • Publication number: 20210067623
    Abstract: Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.
    Type: Application
    Filed: January 13, 2020
    Publication date: March 4, 2021
    Inventors: Sandeep Louis D'SOUZA, Vadim WINEBRAND, Mohamed AHMED, Syed Fawad AHMAD, Nathan Felix ALTMAN, Suhail JALIL, Livingstone SONG, Raj KUMAR, David CHANDLER, Masoud ROHAM, Xin FAN, Lennart Karl-Axel MATHE, Kostadin Dimitrov DJORDJEV, Deep BHATIA
  • Patent number: 10815840
    Abstract: A switchable lever is provided that includes an outer lever, an inner lever pivotably mounted to the outer lever, and a coupling assembly capable of selectively locking the inner lever to the outer lever. The coupling assembly is arranged to be actuated from either a first side or a second side of the switchable lever. The coupling assembly can have one or more push pins and a coupling pin that is arranged to be actuated by the one or more push pins. An actuated end of the coupling pin can be formed with a receiving land that is configured to engage a cam form on a second end of the one or more push pins.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: October 27, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Colin Foster, David Chandler
  • Patent number: 10753237
    Abstract: A switchable lever is provided that includes an outer lever, an inner lever pivotably mounted to the outer lever, and a coupling assembly that is capable of selectively locking the inner lever to the outer lever. The coupling assembly includes a coupling pin that has a first end that is configured to be received by an actuator. The coupling pin can be configured with at least one slot, which can be received by the actuator. The coupling pin is moveable from a first, locked position to a second, unlocked position, by an actuator and can be configured to be received by the actuator continuously throughout a valve lift event. The coupling pin can be configured with at least one protrusion that is arranged to be received by an actuator, or the actuator can be configured with at least one protrusion to receive the coupling pin.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: August 25, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Sumukha Nagaraj, David Chandler, Béla Hofer
  • Publication number: 20200056513
    Abstract: A switching roller finger follower, including: first and second body portions; a resilient element connected to the body portions; and a locking assembly. The first body portion includes: a first bore; a second bore including a first orifice arranged to receive a pressurized fluid; and a second orifice arranged to expel the fluid. The locking assembly includes: a locking pin disposed in the first bore; and a shuttle pin engaged with the locking pin. The shuttle pin is displaceable transverse to the locking pin to: displace the locking pin in a first axial direction to contact the second body portion with the locking pin; and displace the locking pin in a second axial direction to disengage the locking pin from the second body portion. The second bore includes the second orifice; or the second bore does not include the second orifice and is in fluid communication with the second orifice.
    Type: Application
    Filed: August 14, 2018
    Publication date: February 20, 2020
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Sumukha Nagaraj, David Chandler
  • Patent number: 10544712
    Abstract: A switching roller finger follower, including: first and second body portions; a resilient element connected to the body portions; and a locking assembly. The first body portion includes: a first bore; a second bore including a first orifice arranged to receive a pressurized fluid; and a second orifice arranged to expel the fluid. The locking assembly includes: a locking pin disposed in the first bore; and a shuttle pin engaged with the locking pin. The shuttle pin is displaceable transverse to the locking pin to: displace the locking pin in a first axial direction to contact the second body portion with the locking pin; and displace the locking pin in a second axial direction to disengage the locking pin from the second body portion. The second bore includes the second orifice; or the second bore does not include the second orifice and is in fluid communication with the second orifice.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: January 28, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Sumukha Nagaraj, David Chandler
  • Publication number: 20190368392
    Abstract: A switchable lever arrangement is provided that includes at least one switchable lever and a rotary actuator. The at least one switchable lever includes an outer lever, an inner lever pivotably mounted to the outer lever, and a locking part that selectively locks the inner lever to the outer lever. The rotary actuator rotates about a rotational axis to actuate the locking part. The rotary actuator has a first locked position defined by a first effective actuation length, and a second unlocked position defined by a second effective actuation length, with the second actuation length different than the first actuation length.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 5, 2019
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Faheem Ahmed, Sumukha Nagaraj, Béla Hofer, David Chandler
  • Publication number: 20190368386
    Abstract: A switchable lever is provided that includes an outer lever, an inner lever pivotably mounted to the outer lever, and a coupling assembly capable of selectively locking the inner lever to the outer lever. The coupling assembly is arranged to be actuated from either a first side or a second side of the switchable lever. The coupling assembly can have one or more push pins and a coupling pin that is arranged to be actuated by the one or more push pins. An actuated end of the coupling pin can be formed with a receiving land that is configured to engage a cam form on a second end of the one or more push pins.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 5, 2019
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Colin Foster, David Chandler
  • Publication number: 20190368385
    Abstract: A switchable lever is provided that includes an outer lever, an inner lever pivotably mounted to the outer lever, and a coupling assembly that is capable of selectively locking the inner lever to the outer lever. The coupling assembly includes a coupling pin that has a first end that is configured to be received by an actuator. The coupling pin can be configured with at least one slot, which can be received by the actuator. The coupling pin is moveable from a first, locked position to a second, unlocked position, by an actuator and can be configured to be received by the actuator continuously throughout a valve lift event. The coupling pin can be configured with at least one protrusion that is arranged to be received by an actuator, or the actuator can be configured with at least one protrusion to receive the coupling pin.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 5, 2019
    Inventors: Sumukha Nagaraj, David Chandler, Béla Hofer
  • Patent number: 10302210
    Abstract: A method of assembling a solenoid valve assembly is provided. The method includes supporting a shoulder of a valve housing against a flange of a metal ring. The method includes inserting at least one axially extending post of the metal ring through at least one slot of a mounting tab. The method includes deforming the at least one axially extending post of the metal ring to clamp the valve housing between the metal ring and the mounting tab, with the metal ring, the valve housing, and the mounting tab being captively secured with each other. The method includes positioning the mounting tab at least partially within an opening at an axial end of a solenoid housing. The method includes bending or otherwise deforming the outer wall at the axial end of the solenoid housing to retain the solenoid housing to the mounting tab, the metal ring, and the valve housing.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: May 28, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: David Becker, David Chandler
  • Patent number: 10221729
    Abstract: A switchable valve train assembly including a carrier housing defining a hydraulic circuit, a supply assembly, a plurality of rocker shafts, a plurality of separators, and a plurality of rocker arm assemblies is provided. Each one of the plurality of separators divides the rocker shafts into (1) a first chamber extending between a first chamber axial end and the separator, and (2) a second chamber extending between a second chamber axial end and the separator. The plurality of separators each include an orifice defined between the first chamber and the second chamber that provides fluid connection between the first chamber and the second chamber. Locking assemblies of the rocker arm assemblies are selectively actuated based on the supply assembly. The separators ensure that hydraulic fluid within the hydraulic fluid is de-aerated and that the second chambers remain primed with hydraulic fluid for faster actuation of the locking assemblies.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 5, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler, John Whitton, Debora Manther, Pradeep Mohan Mohan Das, Sumukha Nagaraj
  • Patent number: 10208633
    Abstract: A hydraulic support element including a housing with a central bore and a bottom face that is provided on one axial end of the housing, a piston that is arranged in the bore of the housing, the piston is connected to a bottom closure so as to define a first pressure chamber and a second pressure chamber is defined between the bottom face and the bottom closure. A valve is provided between the first pressure chamber and the second pressure chamber to regulate a fluid connection between the pressure chambers, and a seal formed between the piston and the bottom closure with the bottom closure being affixed to the piston in a detachable manner.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: February 19, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler
  • Patent number: 10190445
    Abstract: A switchable roller finger follower includes an inner lever, an outer lever pivotably mounted to the inner lever by a pivot axle, and a coupling device. The coupling device includes a coupling pin configured to move between a locked position in which the inner lever and the outer lever are connected together for movement in at least one direction and an unlocked position in which the inner lever is movable relative to the outer lever in the at least one direction. The coupling device also includes a spring configured to bias the coupling pin in the locked or unlocked position. A de-aeration flow path is formed between an oil passage and an opening for allowing air to move out of the oil passage, past the coupling pin, and exit through the opening. The de-aeration flow path switches between being open and closed based on a position of the coupling pin.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 29, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Pradeep Mohan Mohan Das, Faheem Ahmed, David Chandler
  • Publication number: 20190011056
    Abstract: A method of assembling a solenoid valve assembly is provided. The method includes supporting a shoulder of a valve housing against a flange of a metal ring. The method includes inserting at least one axially extending post of the metal ring through at least one slot of a mounting tab. The method includes deforming the at least one axially extending post of the metal ring to clamp the valve housing between the metal ring and the mounting tab, with the metal ring, the valve housing, and the mounting tab being captively secured with each other. The method includes positioning the mounting tab at least partially within an opening at an axial end of a solenoid housing. The method includes bending or otherwise deforming the outer wall at the axial end of the solenoid housing to retain the solenoid housing to the mounting tab, the metal ring, and the valve housing.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventors: David Becker, David Chandler
  • Publication number: 20180283224
    Abstract: A hydraulic support element including a housing with a central bore and a bottom face that is provided on one axial end of the housing, a piston that is arranged in the bore of the housing, the piston is connected to a bottom closure so as to define a first pressure chamber and a second pressure chamber is defined between the bottom face and the bottom closure. A valve is provided between the first pressure chamber and the second pressure chamber to regulate a fluid connection between the pressure chambers, and a seal formed between the piston and the bottom closure with the bottom closure being affixed to the piston in a detachable manner.
    Type: Application
    Filed: April 3, 2017
    Publication date: October 4, 2018
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler
  • Patent number: 9945270
    Abstract: A hollow rocker shaft including a central opening defined by a radially inner surface and a separator secured in the central opening of the rocker shaft is provided. A radially outer surface of the separator engages the radially inner surface of the rocker shaft via a press-fit. The separator divides the central opening of the rocker shaft into (1) a first chamber extending between a first chamber axial end and the separator, and (2) a second chamber extending between a second chamber axial end and the separator. The separator includes an orifice defined between the first chamber and the second chamber that provides fluid connection between the first chamber and the second chamber.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 17, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler, John Whitton, Debora Manther, Pradeep Mohan Mohan Das, Sumukha Nagaraj
  • Patent number: 9945269
    Abstract: A switchable valve train assembly including a rocker shaft is provided. The rocker shaft includes a first chamber extending between a first axial end and a second axial end of the rocker shaft and a second chamber extending between the first axial end and the second axial end of the rocker shaft. A seepage orifice is defined between the first chamber and the second chamber and provides a fluid connection between the first chamber and the second chamber. The first chamber includes a first actuator port in fluid connection with a first intake port for a hydraulic lash adjuster. The second chamber includes a second actuator port in fluid connection with a second intake port for a locking assembly.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: April 17, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler, John Whitton, Debora Manther, Pradeep Mohan Mohan Das, Sumukha Nagaraj
  • Patent number: 9938862
    Abstract: A switching hydraulic fluid gallery de-aeration arrangement for a switchable valve arrangement is disclosed. A housing for a hydraulic lash adjuster assembly is positioned in a bore of a cylinder head. The housing includes a first, hydraulic lash adjuster fluid port in a first annular groove, and a second switching hydraulic fluid port in a second annular groove. A top land and a bottom land are positioned next to the annular grooves and each have a primary outer diameter. A middle land is defined axially between the grooves. The middle land has a reduced outer diameter relative to the primary outer diameter, or the bore has an annular groove between the top and bottom lands that defines a restricted flow path between a hydraulic lash adjuster fluid gallery and a switching hydraulic fluid gallery that maintains hydraulic fluid in the switching hydraulic fluid gallery.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: April 10, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: David Chandler, Pradeep Mohan Mohan Das, Peter Sailer
  • Publication number: 20180094551
    Abstract: A switchable roller finger follower includes an inner lever, an outer lever pivotably mounted to the inner lever by a pivot axle, and a coupling device. The coupling device includes a coupling pin configured to move between a locked position in which the inner lever and the outer lever are connected together for movement in at least one direction and an unlocked position in which the inner lever is movable relative to the outer lever in the at least one direction. The coupling device also includes a spring configured to bias the coupling pin in the locked or unlocked position. A de-aeration flow path is formed between an oil passage and an opening for allowing air to move out of the oil passage, past the coupling pin, and exit through the opening. The de-aeration flow path switches between being open and closed based on a position of the coupling pin.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Pradeep Mohan Mohan Das, Faheem Ahmed, David Chandler
  • Patent number: 9926816
    Abstract: A switchable rocker arm for valve deactivation is provided for a valve train of an internal combustion engine. The switchable rocker arm includes a cam lever assembly, a valve lever assembly, and a hydraulically actuated coupling assembly that is radially arranged between the cam lever and valve lever assemblies. The coupling assembly includes a shuttle pin, a locking pin with a round or flat locking interface, and optional shuttle pin and locking pin sleeves. In a first, locked position, the rotational motion of a camshaft is translated to linear motion of an engine valve. In a second, unlocked position, the cam lever assembly rotates about the valve lever assembly, facilitating valve deactivation. A pivot joint arranged between the cam lever and valve lever assemblies facilitates an arcuate lost motion of the cam lever assembly. An integrated arrangement for one or more lost motion springs offers packaging and functional advantages.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 27, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Faheem Ahmed, Colin Foster, David Chandler, John Whitton, Kate Higdon