Patents by Inventor Drew A. Sundquist
Drew A. Sundquist 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: 7497297Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: August 1, 2003Date of Patent: March 3, 2009Assignee: BorgWarner, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Dan J. Showalter
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Publication number: 20040020700Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors.Type: ApplicationFiled: August 1, 2003Publication date: February 5, 2004Applicant: BorgWarner, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 6631779Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: February 20, 2001Date of Patent: October 14, 2003Assignee: BorgWarner, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 6263995Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: June 7, 1999Date of Patent: July 24, 2001Assignee: Borg Warner Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 6062330Abstract: An on demand venicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: December 24, 1997Date of Patent: May 16, 2000Assignee: Borg-Warner Automotive, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 6000296Abstract: An automatic transmission and transfer case operatively mounted in a four wheel drive vehicle controlled by a single selector lever that is moved to predetermined detented positions along a longitudinal gate to select the transmission drive ranges, reverse, neutral and park. A special pivot construction allows the selector lever to be moved laterally with respect to the normal longitudinal movement for transfer case gear ratio changes and neutral selection. A small lateral gate is employed to receive the selector lever located in alignment with the neutral detent position of the automatic transmission requiring the transmission to be in neutral when the transfer case is shifted. When moved into the lateral gate, the selector lever activates electronic controls effecting operation of a motor for shifting transfer case gear ratios and for selecting transfer case neutral.Type: GrantFiled: March 30, 1998Date of Patent: December 14, 1999Assignee: Chrysler CorporationInventor: Drew A. Sundquist
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Patent number: 5609219Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: June 7, 1995Date of Patent: March 11, 1997Assignee: Borg-Warner Automotive, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 5605201Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary drive shafts, differentials and axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch comprising a primary, cone clutch assembly which functions as a pilot device to actuate a secondary, disc pack clutch assembly. The electromagnetic clutch is controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shaft overruns, i.e.Type: GrantFiled: February 15, 1996Date of Patent: February 25, 1997Assignee: Borg-Warner Automotive, Inc.Inventors: Ward D. McGinn, Todd L. Perttola, Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 5492194Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary drive shafts, differentials and axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch comprising a primary, cone clutch assembly which functions as a pilot device to actuate a secondary, disc pack clutch assembly. The electromagnetic clutch is controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shaft overruns, i.e.Type: GrantFiled: December 23, 1993Date of Patent: February 20, 1996Assignee: Borg-Warner Automotive, Inc.Inventors: Ward D. McGinn, Todd L. Perttola, Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow
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Patent number: 5485894Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: February 10, 1995Date of Patent: January 23, 1996Assignee: Borg-Warner Automotive, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 5407024Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors. The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle.Type: GrantFiled: June 24, 1992Date of Patent: April 18, 1995Assignee: Borg-Warner Automotive, Inc.Inventors: Will Watson, Alan L. Miller, Drew A. Sundquist, Roger T. Simpson, Diane K. Ducklow, Joseph W. Beckerman, Dan J. Showalter
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Patent number: 5107972Abstract: An electromagnetic clutch assembly (40) especially suitable for use in motor vehicle four wheel drive systems selectively provides power to the front drive components (26, 28, 30). The clutch assembly (40) includes a through drive shaft (42) about which a clutch armature (100), clutch rotor (110), output drive sprocket (76) and other components are coaxially disposed. The drive shaft (42) receives a plurality of spring biased fingers (56) which selectively couple the shaft (42) to the drive sprocket (76). The fingers are translated axially by a like plurality of cam lobes (122) on the rotor (110). A torsion spring (154) maintains the cam lobes (122) in alignment with the fingers (56).Type: GrantFiled: September 13, 1991Date of Patent: April 28, 1992Assignee: Borg-Warner Automotive, Inc.Inventor: Drew A. Sundquist