Assignee
ELEVATOR GMBH
CH34 patents
Top patents by PatentIndex Score
US4638610AJan 27, 1987
Theatrical stage
ELEVATOR GMBH42 citations90
US4380049AApr 12, 1983
Method and apparatus for stopping an elevator
ELEVATOR GMBH29 citations89
US4771197ASep 13, 1988
Frequency converter-controlled squirrel cage motor
ELEVATOR GMBH35 citations83
US4742549AMay 3, 1988
Procedure for watching over the area in front of a lift
ELEVATOR GMBH22 citations80
US4742893AMay 10, 1988
Signalling procedure for a lift and a signalling system
ELEVATOR GMBH22 citations78
US4653612AMar 31, 1987
Speed limiter for lifts provided with catch device
ELEVATOR GMBH22 citations75
US4543026ASep 24, 1985
Pick-up means for roller pallets
ELEVATOR GMBH22 citations74
US4797675AJan 10, 1989
Procedure for counting moving objects as they stop
ELEVATOR GMBH12 citations71
US4684856AAug 4, 1987
Method and drive for elevator DC drive motor stabilization
ELEVATOR GMBH13 citations71
US4349858ASep 14, 1982
Control circuit for use with an electronic guard strip
ELEVATOR GMBH11 citations71
US4640459AFeb 3, 1987
Dual rails for roller pallets
ELEVATOR GMBH9 citations67
US4672277AJun 9, 1987
Elevator motor control
ELEVATOR GMBH11 citations65
US4539636ASep 3, 1985
Apparatus for inter-processor data transfer in a multi-processor system
ELEVATOR GMBH11 citations65
US4340131AJul 20, 1982
Operational control system for lift and elevator machinery
ELEVATOR GMBH14 citations65
US4687110AAug 18, 1987
Apparatus for angularly displacing a load
ELEVATOR GMBH14 citations64
US4784372ANov 15, 1988
Traction sheave
ELEVATOR GMBH3 citations63
US4393442AJul 12, 1983
Procedure and means for monitoring current data in a thyristor-controlled direct current drive
ELEVATOR GMBH6 citations62
US4380275AApr 19, 1983
Apparatus for interfacing weighing data with a lift control system
ELEVATOR GMBH5 citations62
US4621222ANov 4, 1986
Method for improving the dynamic converter drive for a direct current elevator motor
ELEVATOR GMBH3 citations61
US4518062AMay 21, 1985
Procedure and measuring circuit for stopping an elevator
ELEVATOR GMBH6 citations61
US4480283AOct 30, 1984
Procedure and means for monitoring the phase sequence in a three-phase network
ELEVATOR GMBH2 citations61
US4689512AAug 25, 1987
Electric motor
ELEVATOR GMBH5 citations60
US4679032AJul 7, 1987
Procedure and means for producing a contrast image
ELEVATOR GMBH4 citations60
US4414619ANov 8, 1983
Procedure and apparatus for switching thyristor bridges in static alternating current/direct conversion
ELEVATOR GMBH6 citations60
US4355704AOct 26, 1982
Procedure for fine positioning an alternating current lift
ELEVATOR GMBH3 citations60
US4346789AAug 31, 1982
Lift battery control system
ELEVATOR GMBH11 citations59
US4689510AAug 25, 1987
Electric motor and flywheel for operation while immersed in a liquid
ELEVATOR GMBH2 citations58
US4673326AJun 16, 1987
Bridge and stopper mechanism for an apparatus for lateral transfer of roller pallets
ELEVATOR GMBH8 citations58
US4673066AJun 16, 1987
Brake in a light-constructed transport carriage
ELEVATOR GMBH3 citations57
US4583167AApr 15, 1986
Procedure and apparatus for conveying external and output data to a processor system
ELEVATOR GMBH4 citations56
US4663700AMay 5, 1987
Way of placing chokes with air core
ELEVATOR GMBH5 citations46
US4466053AAug 14, 1984
Thyristor converter drive
ELEVATOR GMBH0 citations45
US4635320AJan 13, 1987
Floor selector for lift
ELEVATOR GMBH0 citations42
US4499972AFeb 19, 1985
Speed control system for a motor with short-circuited rotor
ELEVATOR GMBH0 citations40