Inventor
William A. Welsh
Inventor
North Haven, CT, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B64Cprimary
B64CAeroplanes31%
F16FSprings16%
Y02TClimate change mitigation technologies related to transportation9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B64DEquipment for fitting in or to aircraft5%
Y10TTechnical subjects covered by former us classification4%
F16HGearing3%
G05BControl or regulating systems in general3%
G10KSound-producing devices3%
F01DNon-positive displacement machines or engines, e.g. steam turbines2%
PatentTitleYear
10,994,834Case mounted transmission AVC force generators202110,906,636Vibration control assembly for an aircraft and method of controlling aircraft vibration202110,745,116Anti-vibration load generating aircraft actuation system202010,543,912Higher harmonic control augmented with active vibration control202010,538,314Anti-vibration moment generating aircraft actuation system202010,479,515Dual mode supplemental strut and damper201910,443,675Active vibration control of a rotorcraft201910,371,455Cooling system for rotor blade actuators201910,351,233Vibration control of a swashplateless coaxial rotor20199,988,146Rotor balancing apparatus20189,871,334'Slip ring having a liquid metal contact between a stationary element and a rotatable element'20189,452,831'Integration of rotary electrical actuator for swashplateless individual blade control'20169,190,071'Noise suppression device, system, and method'20159,046,148'Active force generation system for minimizing vibration in a rotating system'20158,983,712'Method and system for detecting pushrod faults'20158,920,125'Dual frequency hub mounted vibration suppressor system'20148,454,315'Active force generation system for minimizing vibration in a rotating system'20138,403,643'Dual frequency hub mounted vibration suppressor system'20138,042,659'Active force generation/isolation system employing Magneto Rheological Fluid (MRF)'20118,038,394'System and method of damping a 1P motion'20118,021,115'Active force generation system for minimizing vibration in a rotating system'20117,648,338'Dual higher harmonic control (HHC) for a counter-rotating, coaxial rotor system'20107,224,807'System for computationally efficient active control of tonal sound or vibration'20077,118,328'Gearbox mounted force generator'20067,003,380'System for computationally efficient adaptation of active control of sound or vibration'20066,869,375'High output force actuator for an active vibration control system'20056,832,973'System for active noise reduction'20046,769,872'Active control of multi-element rotor blade airfoils'20046,666,648'Directional elastomeric coupler'20036,644,590'Active system and method for vibration and noise reduction'20036,416,016'Actuator for an active transmission mount isolation system'20026,354,536'Rotor hub mounted actuator for controlling a blade on a rotorcraft'20026,138,947'Active noise control system for a defined volume'20006,105,900'Active noise control system for a helicopter gearbox mount'20005,310,137'Helicopter active noise control system'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2021Based in North Haven, CT, US· patent location history
2000–2021Patents assigned to SIKORSKY AIRCRAFT CORP (32)· patent assignee history
2003–2015Based in New Haven, CT, US· patent location history
2013–2015Patents assigned to WELSH WILLIAM A (5)· patent assignee history
2015Patents assigned to BUTTS DONALD J (1)· patent assignee history
2015Patents assigned to CYCON JAMES PETER (1)· patent assignee history
2015Patents assigned to DAVIS MARK W (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIKORSKY AIRCRAFT CORP | 32 | 2000–2021 |
| WELSH WILLIAM Aself | 5 | 2013–2015 |
| BUTTS DONALD J | 1 | 2015 |
| CYCON JAMES PETER | 1 | 2015 |
| DAVIS MARK W | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| North Haven, CT, US | 27 | 1994–2021 |
| New Haven, CT, US | 8 | 2003–2015 |