RS

Roger T. Simpson

BO Borgwarner: 55 patents #2 of 1,600Top 1%
BA Borg-Warner Automotive: 20 patents #3 of 259Top 2%
JS Jacobs Vehicle Systems: 1 patents #43 of 73Top 60%
XC Xcp: 1 patents #2 of 5Top 40%
Overall (All Time): #24,498 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 25 most recent of 77 patents

Patent #TitleCo-InventorsDate
10329969 System and method of adjusting actuation timing of valves in a piston engine Jacob M. Moore, Alan Steines, John A. Schwoerer 2019-06-25
10138944 Electric phaser coupling method Daniel Brown 2018-11-27
10006321 Engine variable camshaft timing phaser with planetary gear set Michael Close, Thomas Benner 2018-06-26
9982572 Positional control of actuator shaft for e-phaser and method of calibration 2018-05-29
9035510 Motor with torsional isolation means 2015-05-19
8677849 Sprocket with damper and compensator 2014-03-25
8562476 Manual transmission using chain and planetary gear set as final drive Mark E. Michaels 2013-10-22
8256393 Variable cam timing controls mounted in the camshaft Roger P. Butterfield, Franklin R. Smith 2012-09-04
8151746 Control system for a variable compression engine 2012-04-10
7497297 On demand vehicle drive system Will Watson, Alan L. Miller, Drew A. Sundquist, Dan J. Showalter 2009-03-03
7255077 CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals Franklin R. Smith, Marty Gardner 2007-08-14
7225770 Electromagnetic actuator having inherently decelerating actuation between limits 2007-06-05
7214153 Method of changing the duty cycle frequency of a PWM solenoid on a CAM phaser to increase compliance in a timing drive 2007-05-08
7137371 Phaser with a single recirculation check valve and inlet valve Marty Gardner 2006-11-21
6997150 CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals 2006-02-14
6990935 Pivoting lifter control system using spool valve and check valve to recirculate oil 2006-01-31
6978749 Means to add torsional energy to a camshaft 2005-12-27
6966288 Lock pin with centrifugally operated release valve 2005-11-22
6932037 Variable CAM timing (VCT) system having modifications to increase CAM torsionals for engines having limited inherent torsionals Philip J. Mott 2005-08-23
6883475 Phaser mounted DPCS (differential pressure control system) to reduce axial length of the engine 2005-04-26
6883479 VCT phaser having an electromagnetic lock system for shift and lock operation 2005-04-26
6840202 Method to reduce noise of a cam phaser by controlling the position of center mounted spool valve 2005-01-11
6814037 Variable camshaft timing for internal combustion engine with actuator locking Franklin R. Smith, Marty Gardner, Braman Wing, Michael Duffield 2004-11-09
6792902 Externally mounted DPCS (differential pressure control system) with position sensor control to reduce frictional and magnetic hysteresis 2004-09-21
6779501 Method to reduce rotational oscillation of a vane style phaser with a center mounted spool valve Franklin R. Smith 2004-08-24