Simpson; Roger T.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Simpson; Roger T..The latest application filed is for "system and method of adjusting actuation timing of valves in a piston engine".

Company Profile

1.57.30

Simpson; Roger T. - Ithaca NY

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
System and method of adjusting actuation timing of valves in a piston engine Grant 10,329,969 - Simpson , et al.	2019-06-25
Electric phaser coupling method Grant 10,138,944 - Brown , et al. Nov	2018-11-27
Positional control of actuator shaft for e-phaser and method of calibration Grant 9,982,572 - Simpson May 29, 2	2018-05-29
System And Method Of Adjusting Actuation Timing Of Valves In A Piston Engine App 20170335727 - SIMPSON; Roger T.	2017-11-23
Electric Phaser Coupling Method App 20170198755 - BROWN; Daniel ; et al.	2017-07-13
Motor with torsional isolation means Grant 9,035,510 - Simpson May 19, 2	2015-05-19
Sprocket with damper and compensator Grant 8,677,849 - Simpson March 25, 2	2014-03-25
Manual transmission using chain and planetary gear set as final drive Grant 8,562,476 - Simpson , et al. October 22, 2	2013-10-22
Variable cam timing controls mounted in the camshaft Grant 8,256,393 - Simpson , et al. September 4, 2	2012-09-04
Control system for a variable compression engine Grant 8,151,746 - Simpson April 10, 2	2012-04-10
Motor With Torsional Isolation Means App 20120007454 - Simpson; Roger T.	2012-01-12
Manual Transmission Using Chain And Planetary Gear Set As Final Drive App 20110165984 - Simpson; Roger T. ; et al.	2011-07-07
Sprocket With Damper And Compensator App 20110132116 - Simpson; Roger T.	2011-06-09
Variable Force Solenoid With Integrated Position Sensor App 20110048350 - Simpson; Roger T. ; et al.	2011-03-03
Variable Cam Timing Controls Mounted In The Camshaft App 20100186699 - Simpson; Roger T. ; et al.	2010-07-29
Control Method For A Variable Compression Actuator System App 20090320803 - Simpson; Roger T.	2009-12-31
On demand vehicle drive system Grant 7,497,297 - Watson , et al. March 3, 2	2009-03-03
Vct Control Module with Intelligence App 20080230027 - Simpson; Roger T. ; et al.	2008-09-25
Actuator and Control Method For Variable Valve Timing (Vvt) Mechanism App 20080149058 - Simpson; Roger T. ; et al.	2008-06-26
Timing Phaser Control System App 20080135004 - Simpson; Roger T. ; et al.	2008-06-12
CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals Grant 7,255,077 - Simpson , et al. August 14, 2	2007-08-14
Electromagnetic actuator having inherently decelerating actuation between limits Grant 7,225,770 - Simpson June 5, 2	2007-06-05
Method of changing the duty cycle frequency of a PWM solenoid on a CAM phaser to increase compliance in a timing drive Grant 7,214,153 - Simpson May 8, 2	2007-05-08
Friction damped blade tensioner App 20070066427 - Simpson; Roger T.	2007-03-22
Electronic lock for VCT phaser App 20070056538 - Simpson; Roger T. ; et al.	2007-03-15
Mapping temperature compensation limits for PWM control of VCT phasers App 20070028874 - Simpson; Roger T.	2007-02-08
Dual pivoting pawl tensioner App 20060293133 - Simpson; Roger T.	2006-12-28
Phaser with a single recirculation check valve and inlet valve Grant 7,137,371 - Simpson , et al. November 21, 2	2006-11-21
CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals App 20060086332 - Simpson; Roger T. ; et al.	2006-04-27
CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals Grant 6,997,150 - Simpson February 14, 2	2006-02-14
Pivoting lifter control system using spool valve and check valve to recirculate oil Grant 6,990,935 - Simpson January 31, 2	2006-01-31
Means to add torsional energy to a camshaft Grant 6,978,749 - Simpson December 27, 2	2005-12-27
Lock pin with centrifugally operated release valve Grant 6,966,288 - Simpson November 22, 2	2005-11-22
Variable CAM timing (VCT) system having modifications to increase CAM torsionals for engines having limited inherent torsionals Grant 6,932,037 - Simpson , et al. August 23, 2	2005-08-23
Electromagnetic actuator having inherently decelerating actuation between limits App 20050126521 - Simpson, Roger T.	2005-06-16
Pivoting lifter control system using spool valve and check valve to recirculate oil App 20050109297 - Simpson, Roger T.	2005-05-26
Lock pin with centrifugally operated released valve App 20050103295 - Simpson, Roger T.	2005-05-19
CTA phaser with proportional oil pressure for actuation at engine condition with low cam torsionals App 20050103297 - Simpson, Roger T.	2005-05-19
Means to add torsional energy to a camshaft App 20050087160 - Simpson, Roger T.	2005-04-28
Method of changing the duty cycle frequency of a PWM solenoid on a CAM phaser to increase compliance in a timing drive App 20050014586 - Simpson, Roger T.	2005-01-20
Method to reduce noise of a cam phaser by controlling the position of center mounted spool valve Grant 6,840,202 - Simpson January 11, 2	2005-01-11
Phaser with a single recirculation check valve and inlet valve App 20040182344 - Simpson, Roger T. ; et al.	2004-09-23
Variable Cam Timing (vct) System Having Modifications To Increase Cam Torsionals For Engines Having Limited Inherent Torsionals App 20040144348 - Simpson, Roger T. ; et al.	2004-07-29
Method to reduce noise of a cam phaser by controlling the position of center mounted spool valve App 20040040525 - Simpson, Roger T.	2004-03-04
On demand vehicle drive system App 20040020700 - Watson, Will ; et al.	2004-02-05
Hydraulic tensioner with two spring biased pistons and cushioned pull-back rack Grant 6,634,973 - Simpson , et al. October 21, 2	2003-10-21
On demand vehicle drive system Grant 6,631,779 - Watson , et al. October 14, 2	2003-10-14
Hydraulic tensioner with pivotal mount Grant 6,623,390 - Simpson , et al. September 23, 2	2003-09-23
Blade tensioner having spring blade cantilevered from distal end of arm Grant 6,612,952 - Simpson , et al. September 2, 2	2003-09-02
Variable camshaft timing system with pin-style lock between relatively oscillatable components Grant 6,481,402 - Simpson , et al. November 19, 2	2002-11-19
Multi-position variable camshaft timing system actuated by engine oil pressure Grant 6,374,787 - Simpson , et al. April 23, 2	2002-04-23
Hydraulic tensioner with pivotal mount App 20020006841 - Simpson, Roger T. ; et al.	2002-01-17
Variable valve timing with actuator locking for internal combustion engine App 20010054402 - Simpson, Roger T. ; et al.	2001-12-27
Pressure relief valve and dual path vent disc for hydraulic tensioner Grant 6,322,468 - Wing , et al. November 27, 2	2001-11-27
On demand vehicle drive system App 20010042652 - Watson, Will ; et al.	2001-11-22
Multi-position variable cam timing system having a vane-mounted locking-piston device Grant 6,311,655 - Simpson , et al. November 6, 2	2001-11-06
Multi-position variable camshaft timing system actuated by engine oil pressure App 20010027763 - Simpson, Roger T. ; et al.	2001-10-11
Torsionally compliant sprocket for engine balance shaft drive and method of manufacture Grant 6,283,076 - Simpson September 4, 2	2001-09-04
Control valve strategy for vane-type variable camshaft timing system Grant 6,263,846 - Simpson , et al. July 24, 2	2001-07-24
On demand vehicle drive system Grant 6,263,995 - Watson , et al. July 24, 2	2001-07-24
Variable valve timing with actuator locking for internal combustion engine Grant 6,250,265 - Simpson June 26, 2	2001-06-26
Multi-position variable camshaft timing system actuated by engine oil Grant 6,247,434 - Simpson , et al. June 19, 2	2001-06-19
Hydraulic tensioner with pawl-style external rack Grant 6,244,981 - Simpson June 12, 2	2001-06-12
Torsionally compliant and damped sprocket system with position stops Grant 6,234,127 - Simpson , et al. May 22, 2	2001-05-22
Hydraulic tensioner with a hydraulically controlled rack Grant 6,196,939 - Simpson March 6, 2	2001-03-06
Hydraulic tensioner with plastic cap check valve or vent Grant 6,139,454 - Simpson October 31, 2	2000-10-31
Hydraulic tensioner with external rack having backlash restriction Grant 6,120,402 - Preston , et al. September 19, 2	2000-09-19
Hydraulic tensioner with tuned spring piston Grant 6,117,033 - Simpson September 12, 2	2000-09-12
On demand vehicle drive system Grant 6,062,330 - Watson , et al. May 16, 2	2000-05-16
Hydraulic tensioner with external rack Grant 5,989,139 - Dusinberre, II , et al. November 23, 1	1999-11-23
Hydraulic tensioner with a bore cup Grant 5,967,920 - Dembosky , et al. October 19, 1	1999-10-19
Hydraulic chain tensioner with molded plastic body Grant 5,967,921 - Simpson , et al. October 19, 1	1999-10-19
Mechanical friction tensioner Grant 5,951,423 - Simpson September 14, 1	1999-09-14
Hydraulic tensioner with modular inlet check valve with pressure relief Grant 5,707,309 - Simpson January 13, 1	1998-01-13
Integral inlet and pressure relief valve for an automotive tensioner Grant 5,700,213 - Simpson , et al. December 23, 1	1997-12-23
Hydraulic tensioner for dual chain system Grant 5,700,216 - Simpson , et al. December 23, 1	1997-12-23
Hydraulic tensioner with sealing element Grant 5,628,701 - Dembosky , et al. May 13, 1	1997-05-13
Camshaft tuned vibration damper Grant 5,619,887 - Simpson April 15, 1	1997-04-15
On demand vehicle drive system Grant 5,609,219 - Watson , et al. March 11, 1	1997-03-11
Torsional absorber for camshaft sprockets Grant 5,579,665 - Mott , et al. December 3, 1	1996-12-03
On demand vehicle drive system Grant 5,492,194 - McGinn , et al. February 20, 1	1996-02-20
On demand vehicle drive system Grant 5,485,894 - Watson , et al. January 23, 1	1996-01-23
On demand vehicle drive system Grant 5,407,024 - Watson , et al. April 18, 1	1995-04-18
Usage control system Grant 4,519,088 - Rademacher , et al. May 21, 1	1985-05-21