Patents by Inventor Shawn A. Holland
Shawn A. Holland 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: 9631681Abstract: A gear mechanism for motor vehicles includes a double clutch gear mechanism with two part gear mechanisms and a double clutch which transmits torque from the engine optionally to one of the two part gear mechanisms, with a central disk connected to a drive disk, two outer pressure application plates which are also connected to the drive disk and are moveable in the axial direction relative to the central disk, and friction disks arranged between the central disk and the pressure application plates, wherein the friction disks consist of two support carrier disks arranged parallel to each other and moveably in relation to each other, between which leaf-like spring segments are provided. To eliminate vibration problems which can occur on start-up from standstill, on load-change processes and during the gear change, the leaf-like spring segments have different spring characteristic curves with which a multistage spring characteristic is achieved.Type: GrantFiled: August 13, 2013Date of Patent: April 25, 2017Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ralph S. Walker, Andreas Tissot, Shawn A. Holland, Johann Kirchhoffer
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Patent number: 9423024Abstract: A method of adapting transmission controls to locate synchronizer touch points in an automated layshaft transmission. This method may include actuating a motor to move a shift drum along a layshaft at an essentially constant speed; measuring a feedback current as the motor moves the shift drum; detecting a first spike in feedback current adjacent to a second spike in feedback current for a gear; determining a shift drum angle for the first spike; and adjusting a transmission controller to set a synchronizer touch point at a shift drum angle adjacent to the first feedback current spike for the gear.Type: GrantFiled: January 12, 2012Date of Patent: August 23, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Jeffrey J. Tumavitch, Shawn A. Holland, Bradley D. Riedle, William L. Murray
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Publication number: 20140048372Abstract: A gear mechanism for motor vehicles includes a double clutch gear mechanism with two part gear mechanisms and a double clutch which transmits torque from the engine optionally to one of the two part gear mechanisms, with a central disk connected to a drive disk, two outer pressure application plates which are also connected to the drive disk and are moveable in the axial direction relative to the central disk, and friction disks arranged between the central disk and the pressure application plates, wherein the friction disks consist of two support carrier disks arranged parallel to each other and moveably in relation to each other, between which leaf-like spring segments are provided. To eliminate vibration problems which can occur on start-up from standstill, on load-change processes and during the gear change, the leaf-like spring segments have different spring characteristic curves with which a multistage spring characteristic is achieved.Type: ApplicationFiled: August 13, 2013Publication date: February 20, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ralph S. Walker, Andreas Tissot, Shawn A. Holland, Johann Kirchhoffer
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Publication number: 20130184945Abstract: A method of adapting transmission controls to locate synchronizer touch points in an automated layshaft transmission. This method may include actuating a motor to move a shift drum along a layshaft at an essentially constant speed; measuring a feedback current as the motor moves the shift drum; detecting a first spike in feedback current adjacent to a second spike in feedback current for a gear; determining a shift drum angle for the first spike; and adjusting a transmission controller to set a synchronizer touch point at a shift drum angle adjacent to the first feedback current spike for the gear.Type: ApplicationFiled: January 12, 2012Publication date: July 18, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Jeffrey J. Tumavitch, Shawn A. Holland, Bradley D. Riedle, William L. Murray
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Patent number: 8308609Abstract: A method for controlling a power-off downshift in a powershift transmission includes disengaging the current gear, synchronizing engine speed and a speed of the target gear layshaft by increasing a torque capacity of the target gear clutch, disengaging the clutch, engaging the target gear, and reengaging the clutch.Type: GrantFiled: June 14, 2010Date of Patent: November 13, 2012Assignee: Ford Global Technologies, LLCInventors: Shawn A. Holland, Ralph S. Walker, George Herr, Jeffrey J. Tumavitch, Bradley D. Riedle, Steven C. Meisner, Hong Jiang, Matthew J. Shelton
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Patent number: 8292785Abstract: A method for controlling a torque direction transition in a dual clutch transmission includes decreasing a torque capacity of a transmission input clutch when clutch slip reaches a target slip during a power-off condition, producing a subsequent power-on condition, and increasing torque capacity of said clutch when clutch slip reaches a second target slip.Type: GrantFiled: June 8, 2010Date of Patent: October 23, 2012Assignee: Ford Global Technologies, LLCInventors: Ralph S. Walker, Shawn A. Holland, Terry G. Feldpausch, Bradley D. Riedle
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Publication number: 20110306464Abstract: A method for controlling a power-off downshift in a powershift transmission includes disengaging the current gear, synchronizing engine speed and a speed of the target gear layshaft by increasing a torque capacity of the target gear clutch, disengaging the clutch, engaging the target gear, and reengaging the clutch.Type: ApplicationFiled: June 14, 2010Publication date: December 15, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Shawn A. Holland, Ralph S. Walker, George Herr, Jeffrey J. Tumavitch, Bradley D. Riedle, Steven C. Meisner, Hong Jiang, Matthew J. Shelton
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Publication number: 20110300991Abstract: A method for controlling a torque direction transition in a dual clutch transmission includes decreasing a torque capacity of a transmission input clutch when clutch slip reaches a target slip during a power-off condition, producing a subsequent power-on condition, and increasing torque capacity of said clutch when clutch slip reaches a second target slip.Type: ApplicationFiled: June 8, 2010Publication date: December 8, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Ralph S. Walker, Shawn A. Holland, Terry G. Feldpausch, Bradley D. Riedle
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Patent number: 5855391Abstract: A leather covered air bag enclosure is provided by forming a leather cover over a semi-rigid synthetic cap and providing lines of weakness in the leather cover conforming to lines of weakness in the synthetic cap. The lines of weakness may be formed of a plurality of rows of perforations so as to provide uniform performance and decorative appearance.Type: GrantFiled: May 1, 1996Date of Patent: January 5, 1999Assignee: Custom Trim Ltd.Inventor: Shawn Holland