Inventor
Randall Keith Roberts
Inventor
Hebron, CT, US
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B66Bprimary
B66BElevators84%
G01BMeasuring length, thickness or similar linear dimensions5%
B60LPropulsion of electrically-propelled vehicles2%
B66DCapstans2%
F16CShafts2%
F16HGearing2%
H02KDynamo-electric machines2%
PatentTitleYear
10,865,071Configurable multicar elevator system202010,689,228Elevator system evaluation device202010,538,412Brake operation management in elevators202010,532,908Thrust and moment control system for controlling linear motor alignment in an elevator system202010,472,206Sensor failure detection and fusion system for a multi-car ropeless elevator system201910,421,642Elevator component separation assurance system and method of operation201910,407,275Detection and control system for elevator operations201910,399,820Elevator tension member stiffness estimation and monitoring201910,399,821Vibration-based elevator tension member wear and life monitoring system201910,294,074Elevator recovery car201910,252,879Brake operation management in elevators201910,118,802Structural health monitoring of an escalator drive system201810,099,894Active damping of a hovering elevator car based on vertical oscillation of the hovering elevator car201810,035,684Elevator component separation assurance system and method of operation20189,975,735Cab isolation of an elevator car20189,914,619'Elevator rope sway mitigation'20189,840,395'Multi-drive thrust manager for elevator control'20179,546,073'Rope sway mitigation through control of access to elevators'20179,359,172'Elevator rope sway detection and damping'20169,321,610'Frictional damper for reducing elevator car movement'20169,038,783'Rope sway mitigation via rope tension adjustment'20159,010,499'Multi-car elevator hoistway separation assurance'20158,746,411'Elevator car positioning including gain adjustment based upon whether a vibration damper is activated'20148,459,415'Elevator motion profile control including non-instantaneous transition between jerk values'20138,360,209'Dynamic compensation during elevator car re-leveling'20138,297,412'Elevator dispatching control for sway mitigation'20128,136,635'Method and system for maintaining distance between elevator cars in an elevator system with multiple cars in a single hoistway'20126,216,824'Semi-active elevator hitch'20015,866,861'Elevator active guidance system having a model-based multi-input multi-output controller'19995,814,774'Elevator system having a force-estimation or position-scheduled current command controller'19985,750,945'Active elevator hitch'19985,652,414'Elevator active guidance system having a coordinated controller'19975,544,721'Method and apparatus for adjusting an elevator car based on stored horizontal displacement and acceleration information'19965,524,730'Method and apparatus for storing sensed elevator horizontal displacement and acceleration signals'19965,329,077'Elevator ride quality'19945,308,938'Elevator active suspension system'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2020Patents assigned to OTIS ELEVATOR CO (35)· patent assignee history
1994–2001Based in Amston, CT, US· patent location history
2012–2018Patents assigned to ROBERTS RANDALL KEITH (9)· patent assignee history
2012–2016Patents assigned to TERRY HAROLD (3)· patent assignee history
2012–2018Patents assigned to CHRISTY THERESA M (2)· patent assignee history
2012–2020Based in Hebron, CT, US· patent location history
2014–2016Patents assigned to ADIFON LEANDRE (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OTIS ELEVATOR CO | 35 | 1994–2020 |
| ROBERTS RANDALL KEITHself | 9 | 2012–2018 |
| TERRY HAROLD | 3 | 2012–2016 |
| ADIFON LEANDRE | 2 | 2014–2016 |
| CHRISTY THERESA M | 2 | 2012–2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hebron, CT, US | 27 | 2012–2020 |
| Amston, CT, US | 9 | 1994–2001 |