Inventor
JAMIESON ERIC K
US17 patents
Patents
17 patentsUS5984051ANov 16, 1999
Remote elevator call requests with descriptor tags
OTIS ELEVATOR CO158 citations97
US5107964AApr 28, 1992
Separate elevator door chain
OTIS ELEVATOR CO63 citations95
US5407028AApr 18, 1995
Tested and redundant elevator emergency terminal stopping capability
OTIS ELEVATOR CO68 citations94
US5301773AApr 12, 1994
Positive terminal overspeed protection by rail grabbing
OTIS ELEVATOR CO60 citations93
US5929399AJul 27, 1999
Automatic open loop force gain control of magnetic actuators for elevator active suspension
OTIS ELEVATOR CO35 citations92
US5864102AJan 26, 1999
Dual magnet controller for an elevator active roller guide
OTIS ELEVATOR CO22 citations92
US5343003AAug 30, 1994
Recalibration of hitch load weighing using dynamic tare
OTIS ELEVATOR CO21 citations92
US5631452AMay 20, 1997
System for position loss recovery for an elevator car
OTIS ELEVATOR CO20 citations90
US5366044ANov 22, 1994
Bidirectional eddy current overspeed protection for elevators
OTIS ELEVATOR CO41 citations90
US5531294AJul 2, 1996
Bias torque for elevator hoist drive to avoid rollback, rollforward
OTIS ELEVATOR CO29 citations89
US5407030AApr 18, 1995
Recalibrating an elevator loadweighing system
OTIS ELEVATOR CO26 citations89
US5810120ASep 22, 1998
Roller guide assembly featuring a combination of a solenoid and an electromagnet for providing counterbalanced centering control
OTIS ELEVATOR CO21 citations87
US5321216AJun 14, 1994
Restraining elevator car motion while the doors are open
OTIS ELEVATOR CO27 citations86
US5824976AOct 20, 1998
Method and apparatus for sensing fault conditions for an elevator active roller guide
OTIS ELEVATOR CO14 citations73
US5765663AJun 16, 1998
Methods and apparatus for preventing undue wear of elevator actuators
OTIS ELEVATOR CO7 citations73
US5345042ASep 6, 1994
Elevator hitch load weighing tare compensation
OTIS ELEVATOR CO14 citations73
US5172782ADec 22, 1992
Pivot mount of elevator load-weighing at car hitch
OTIS ELEVATOR CO14 citations73