Inventor

David A. Popelka

Inventor

Colleyville, TX, US

Overview

25→

Patents

1980–2020

Patent span

Performing operations

Primary field (CPC B)

Patents· 25 as inventor

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

B64Cprimary

B64CAeroplanes66%

F16FSprings18%

G10KSound-producing devices5%

Y02TClimate change mitigation technologies related to transportation5%

B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general3%

B63HMarine propulsion or steering3%

PatentTitleYear

10,549,849Variable hub-to-hub phasing rotor system2020 10,526,076Rotor hub vibration attenuator2020 10,059,438Hub assembly with grease lubricated roller bearing and tension-torsion strap2018 9,889,927'Variable hub-to-hub phasing rotor system'2018 9,481,455'Dual series damper system'2016 9,452,828'Rotor hub vibration attenuator'2016 9,352,830'Aircraft rotor with discrete flap hinge'2016 9,260,185'System and method of harvesting power with a rotor hub damper'2016 9,139,296'Rotor hub vibration attenuator'2015 8,985,951'Multiple-yoke main rotor assembly'2015 8,926,281'Compact rotorcraft dual-element spherical elastomeric centrifugal-force bearing assembly'2015 8,857,581'Dual spring rate damper'2014 8,662,442'Active prop rotor stability system'2014 8,657,228'Method and apparatus for actively manipulating aerodynamic surfaces'2014 8,474,745'Rotor hub vibration attenuator'2013 8,424,799'Rotor hub vibration attenuator'2013 8,287,237'Step-over blade-pitch control system'2012 8,181,755'Dual spring rate damper'2012 8,029,371'Rotary-wing aircraft torque coupling with pad bearings'2011 7,845,909'Assembly for providing flexure to blade system'2010 7,828,525'Soft in-plane tiltrotor hub'2010 6,616,095'Coupled aircraft rotor system'2003 6,443,273'Compact vibration cancellation device'2002 4,601,639'Nodalized rotor'1986 4,227,665'Fixed leading edge slat spoiler for a horizontal stabilizer'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1986Based in Bedford, TX, US· patent location history

1986–2020Patents assigned to BELL HELICOPTER TEXTRON INC (6)· patent assignee history

2002–2020Based in Colleyville, TX, US· patent location history

2010–2020Patents assigned to TEXTRON INNOVATIONS INC (18)· patent assignee history

2012–2018Patents assigned to STAMPS FRANK B (12)· patent assignee history

2012–2016Patents assigned to POPELKA DAVID A (11)· patent assignee history

2012–2016Patents assigned to RAUBER RICHARD E (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TEXTRON INNOVATIONS INC	18	2010–2020
STAMPS FRANK B	12	2012–2018
POPELKA DAVID Aself	11	2012–2016
BELL HELICOPTER TEXTRON INC	6	1986–2020
RAUBER RICHARD E	4	2012–2016

Locations

Location	Patents	Span
Colleyville, Texas, US	23	2002–2020
Bedford, Texas, US	2	1980–1986