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Inventor

Stephen R. Lewis

Inventor
Chillicothe, IL, US

Overview

77→
Patents
1988–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 77 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F02Mprimary
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof31%
G09GArrangements or circuits for control of indicating devices using static means to present variable information16%
G02BOptical elements, systems or apparatus10%
Y10TTechnical subjects covered by former us classification9%
F02DControlling combustion engines4%
F16KValves4%
H10NElectric solid-state devices not otherwise provided for4%
H01FMagnets3%
H03KPulse technique2%
F01LCyclically operating valves for machines or engines1%
PatentTitleYear
10,711,754Valve assembly having electrical actuator with stepped armature202010,662,910Partial travel solenoid valve actuation arrangement202010,519,916Flexible rate shape common rail fuel system and fuel injector for same20199,530,344'Circuits for controlling display apparatus'20169,423,449'Display apparatus including dummy display element for TFT testing'20169,400,382'Circuits for controlling display apparatus'20169,341,153'System and method for internal cooling of a fuel injector'20169,336,732'Circuits for controlling display apparatus'20169,322,869'Display apparatus including dummy display element for TFT testing'20169,239,457'Circuits for controlling display apparatus'20169,235,046'Low-voltage MEMS shutter assemblies'20169,223,128'Display apparatus with densely packed electromechanical systems display elements'20159,177,523'Circuits for controlling display apparatus'20159,163,597'High-pressure containment sleeve for nozzle assembly and fuel injector using same'20159,158,106'Display methods and apparatus'20159,159,277'Circuits for controlling an array of light modulators of a display apparatus to generate display images'20159,140,224'Electromagnetic actuator and method for controlling fluid flow'20159,135,868'Direct-view MEMS display devices and methods for generating images thereon'20159,087,486'Circuits for controlling display apparatus'20159,082,353'Circuits for controlling display apparatus'20159,047,830'Circuits for controlling display apparatus'20158,967,037'Thrust lubrication strategy for roller lifters of a common rail fuel pump'20158,960,159'Drain for fuel pump'20158,690,118'Solenoid actuated device and methods'20148,523,090'Fuel injection systems and armature housings'20138,519,923'Display methods and apparatus'20138,519,945'Circuits for controlling display apparatus'20138,517,284'System and method for internal cooling of a fuel injector'20138,505,514'Fluid injector with auxiliary filling orifice'20138,482,496'Circuits for controlling MEMS display apparatus on a transparent substrate'20138,480,009'Large bore fuel system and fuel injector for same'20138,459,577'Decoupled valve assembly and fuel injector using same'20138,333,336'Cavitation erosion reduction strategy for valve member and fuel injector utilizing same'20128,322,004'Indirect laser induced residual stress in a fuel system component and fuel system using same'20128,310,442'Circuits for controlling display apparatus'20128,297,532'Apparatus for cooling a fuel injector'20128,267,333'Fuel injector and method of assembly therefor'20128,214,132'Efficient wave form to control fuel system'20128,159,428'Display methods and apparatus'20128,100,346'Piezoelectric actuator with multi-function spring and device using same'20128,083,206'Precision ground armature assembly for solenoid actuator and fuel injector using same'20118,074,903'Stator assembly and fuel injector using same'20118,056,537'Engine having fuel injector with actuator cooling system and method'20117,997,145'System for preloading piezoelectric actuators and method'20117,980,224'Two wire intensified common rail fuel system'20117,963,464'Fuel injector and method of assembly therefor'20117,950,596'Distributed stiffness biasing spring for actuator system and fuel injector using same'20117,900,886'Valve assembly having a washer'20117,886,718'Fuel injector having integral body guide and nozzle case for pressure containment'20117,866,301'Self-guided armature in single pole solenoid actuator assembly and fuel injector using same'20117,839,356'Display methods and apparatus'20107,779,854'Valve member to armature coupling system and fuel injector using same'20107,765,877'System for preloading piezoelectric actuators and method'20107,755,582'Display methods and apparatus'20107,742,016'Display methods and apparatus'20107,714,483'Fuel injector having piezoelectric actuator with preload control element and method'20107,665,445'Motion coupler for a piezoelectric actuator'20107,610,888'Non-guided tappet and fuel injector using same'20097,584,747'Cam assisted common rail fuel system and engine using same'20097,547,000'Valve coupling system'20097,520,259'Power management system for fuel injected engine'20097,357,020'Valve-testing system and method employing a fluid-transfer system with a reservoir'20087,111,613'Fuel injector control system and method'20066,976,474'Mechanically actuated, electronically controlled fuel injection system'20056,945,508'Electromagnetic control valve'20056,880,766'Leak arrest volume for reducing component separation and fuel injector using same'20056,684,854'Auxiliary systems for an engine having two electrical actuators on a single circuit'20046,598,591'Measuring check motion through pressure sensing'20036,349,920'Poppet valve shaping for quick valve opening'20026,029,682'Rapidly opening electromagnetic valve'20006,026,786'Method and apparatus for controlling a fuel injector assembly of an internal combustion engine'20005,583,290'Micromechanical apparatus with limited actuation bandwidth'19965,511,420'Electric field attraction minimization circuit'19964,891,645'Digital-to-analog converter with on-board unity gain inverting amplifier'19904,808,908'Curvature correction of bipolar bandgap references'19894,804,960'Sub-ranging A/D converter with improved error correction'19894,791,318'MOS threshold control circuit'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2016Based in Reading, MA, US· patent location history
2000–2020Patents assigned to CATERPILLAR INC (48)· patent assignee history
2000–2005Based in Minonk, IL, US· patent location history
2005–2020Based in Chillicothe, IL, US· patent location history
2010–2016Patents assigned to PIXTRONIX INC (23)· patent assignee history
2011–2016Patents assigned to LEWIS STEPHEN R (23)· patent assignee history
2012–2016Patents assigned to MCALLISTER ABRAHAM (9)· patent assignee history
2012–2016Patents assigned to BARTON ROGER W (8)· patent assignee history
2016Based in Portland, ME, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CATERPILLAR INC482000–2020
LEWIS STEPHEN Rself232011–2016
PIXTRONIX INC232010–2016
MCALLISTER ABRAHAM92012–2016
BARTON ROGER W82012–2016
Locations
LocationPatentsSpan
Chillicothe, Illinois, US412005–2020
Reading, Massachusetts, US271988–2016
Minonk, Illinois, US72000–2005
Portland, ME, US22016