LexDanaLexDanabeta
Inventor

David G. Elpern

Inventor
Los Angeles, CA, US

Overview

19→
Patents
1979–2017
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 19 as inventor

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

F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines13%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants13%
F02BInternal-combustion piston engines9%
Y02TClimate change mitigation technologies related to transportation9%
Y10TTechnical subjects covered by former us classification9%
E05BLocks6%
F16CShafts6%
G07CTime or attendance registers6%
F02CGas-turbine plants5%
F02DControlling combustion engines5%
PatentTitleYear
9,605,540'Alternating nozzles for radial inflow turbine'20178,376,690'Three bearing flexible shaft for high speed turbomachinery'20137,988,426'Compressor ported shroud for foil bearing cooling'20117,502,717'Method for predicting air cycle machine turbine ice formation and shedding and journal bearing wear'20097,165,936'Adjustable flow turbine nozzle'20076,282,931'Electrically operated actuator and method'20016,089,058'Method for retrofitting a deadbolt assembly with an electrically operated actuator'20006,017,184'Turbocharger integrated bearing system'20005,979,199'Electrically operated actuator'19995,896,769'Electrically operated actuator'19995,487,273'Turbocharger having pneumatic actuator with pilot valve'1996RE034276'Turbocharger bearing and lubrication system'19935,172,552'Turbocharger with flexible cable wastegate operating linkage'19924,798,523'Turbocharger bearing and lubrication system'19894,717,318'Turbocharger heat transfer control method and apparatus'19884,656,834'Electronic turbocharger control'19874,446,837'Pressure regulator-accumulator for use with mechanical diaphragm pump'19844,372,271'Single point intermittent flow fuel injection'19834,132,203'Single point intermittent flow fuel injection'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1984Patents assigned to BENDIX CORP (3)· patent assignee history
1979–1984Based in Hamtramck, MI, US· patent location history
1987–1988Patents assigned to GARRETT CORP (2)· patent assignee history
1987–2017Based in Los Angeles, CA, US· patent location history
1989–2000Patents assigned to ALLIED SIGNAL INC (4)· patent assignee history
1999–2001Patents assigned to ACCESS TECHNOLOGIES INC (4)· patent assignee history
2007–2017Patents assigned to HONEYWELL INT INC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HONEYWELL INT INC52007–2017
ACCESS TECHNOLOGIES INC41999–2001
ALLIED SIGNAL INC41989–2000
BENDIX CORP31979–1984
GARRETT CORP21987–1988
Locations
LocationPatentsSpan
Los Angeles, California, US161987–2017
Hamtramck, MI, US31979–1984