Inventor

Derek F. Lahr

Inventor

Howell, MI, US

Overview

2011–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 52 as inventor

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

F16Hprimary

F16HGearing20%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles17%

Y02TClimate change mitigation technologies related to transportation12%

F16DCouplings for transmitting rotation11%

F16FSprings7%

H02KDynamo-electric machines7%

B60WConjoint control of vehicle sub-units of different type or different function6%

B60YIndexing scheme relating to aspects cross-cutting vehicle technology6%

B60LPropulsion of electrically-propelled vehicles3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

11,133,724Rotor with compressive structural elements2021 11,121,592Electric machine core with arcuate grain orientation2021 11,088,607Axial flux machine with nutating rotor2021 11,009,124Hydrodynamic torque converters with integrated engine disconnect devices of motor vehicle powertrains2021 10,955,025Vehicle powertrain variable vibration absorber assembly2021 10,941,840Continuously variable transmission with wedge actuation mechanism2021 10,923,987Electrical system with cycloidal electric machine2021 10,913,344Drivetrain for a hybrid propulsion system2021 10,876,582Selectable one-way clutches with notch plate inserts for engine disconnect devices of motor vehicle powertrains2020 10,864,813Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrains2020 10,850,602Hybrid powertrain engine disconnect device2020 10,851,882Damper configurations for a hybrid vehicle powertrain having a motor coupled between an engine and a transmission with a one-way clutch coupling the engine to the transmission2020 10,855,217Power electronics drive for cylcoidal electric machine2020 10,811,946Cycloidal reluctance motor with rotor permanent magnets2020 10,804,759Cycloidal electric machine with minimized airgap2020 10,804,757Cycloidal reluctance motor with rotor electromagnets2020 10,760,624Wedge-type selectable one-way clutches for engine disconnect devices of motor vehicle powertrains2020 10,763,772Excitation of cycloidal electric machine2020 10,710,449Hybrid drivetrain2020 10,676,080Control strategies for a hybrid vehicle2020 10,626,951Isolator assembly and a vehicle including the isolator assembly2020 10,583,728Powertrain and a vehicle2020 10,563,744Damper assemblies for engine disconnect clutches of motor vehicle powertrains2020 10,556,482Vascular structures and methods for thermal control2020 10,514,096Continuously variable transmission ratio measuring device2019 10,513,251Multi-mode engine-disconnect clutch assemblies and control logic for hybrid electric vehicles2019 10,508,696Selectable one-way clutch with damper springs2019 10,473,197Vehicle propulsion system torque transfer vibration attenuation mechanism2019 10,471,820Hybrid drivetrain2019 10,473,200Continuously variable transmission with wedge actuation mechanism2019 10,464,410Vehicle propulsion system torque transfer vibration attenuation mechanisms2019 10,358,123Multi-mode engine-disconnect clutch assemblies and control logic for hybrid electric vehicles2019 10,359,104Integrated selectable one way clutch and torque converter engine disconnect2019 10,337,597Engine disconnects with mechanical diodes for vehicle powertrains2019 10,323,696Dynamic latching mechanisms for selectable clutches of motor vehicle powertrains2019 10,295,000Mechanical diode2019 10,267,376Powertrain torque transfer damping mechanism2019 10,267,391Continuously variable transmission with wedge actuation mechanism2019 10,260,613Damper assemblies for engine disconnect clutches of motor vehicle powertrains2019 10,259,448Hybrid vehicle propulsion systems and methods2019 10,189,470Hybrid vehicle propulsion systems and methods2019 10,166,975Transmission with torque converter disconnect clutch and engine braking friction clutch2019 10,155,547Vascular structures and methods for heat management2018 10,151,373Planetary damper architecture with centrifugal pendulum absorber2018 10,077,834Hydraulic control system for a transmission2018 10,054,201Variable speed accessory drive2018 10,054,205Torque inline hydraulic pump for CVTs2018 10,047,822Vehicle propulsion system torque transfer vibration attenuation mechanism2018 10,017,044Hybrid powertrain system2018 9,951,853Long travel damper using a clockspring2018 8,425,364'Cam-based infinitely variable transmission'2013 7,878,935'Continuously variable transmission with external cam'2011

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2011Patents assigned to LAHR DEREK FREI (1)· patent assignee history

2011–2013Based in Blacksburg, VA, US· patent location history

2013Patents assigned to LAHR DEREK (1)· patent assignee history

2018–2021Patents assigned to GM GLOBAL TECH OPERATIONS LLC (50)· patent assignee history

2018–2021Based in Howell, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GM GLOBAL TECH OPERATIONS LLC	50	2018–2021
LAHR DEREKself	1	2013
LAHR DEREK FREIself	1	2011

Locations

Location	Patents	Span
Howell, MI, US	50	2018–2021
Blacksburg, Virginia, US	2	2011–2013