Inventor

MARVIN DARYL J

US60 patents

⚠️ This page may combine multiple inventors who share the name “MARVIN DARYL J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MARVIN DARYL J

OTIS ELEVATOR CO

Power factor controller for active converter

Motor drive parameters

Absolute position sensing method and apparatus for synchronous elevator machines by detection stator iron saturation

Elevator brake

Elevator system roping arrangement

Drive and control for six-phase electrical machines with negligible common-mode voltage

Emergency mode operation of elevator system having linear propulsion system

Motor torque ripple reduction using DC bus harmonics

Device and method for actuating an elevator safety brake

Emergency safety actuator for an elevator

Brake member actuation mechanism

Braking system resetting mechanism for a hoisted structure

Electronic safety actuator for lifting a safety wedge of an elevator

Passive elevator car

Elevator systems and methods of controlling elevators responsive to detected passenger states

Protective device for speed sensing device

Magnet assembly for an electronic safety brake actuator (ESBA)

Spring useful for elevator safety device

Method and system of reducing false actuation of safety brakes in elevator system

Encapsulated components of electromechanical actuators for elevator systems

Intelligent surface systems for building solutions

Elevator braking in a battery powered elevator system

Power distribution for multicar, ropeless elevator system

Protection assembly for elevator braking assembly speed sensing device and method

Braking device for braking a hoisted object relative to a guide member

Active braking for immediate stops

Elevator sound systems

ROGERS KYLE W

Elevator drive power supply control

Safety chain circuit

Elevator system using dynamic braking

Elevator power supply for inverter controller

Battery mounting in elevator hoistway

ERICSON RICHARD J

Elevator machine support

Elevator system including control electronics supported on an elevator machine support

Elevator system with guide rail bracket

DANA CORP

Apparatus and method for generating digital position signals for a rotatable shaft

Apparatus and method for generating digital position signals for a rotatable shaft

MARVIN DARYL J

Elevator regenerative drive control referenced to DC bus

Over-acceleration and over-speed detection and processing system

KANG KEUNMO

Position feedback for elevator system

Device and method for determining position information using accelerometers on a rotating component

SCHIENDA GREG A

Elevator over-acceleration and over-speed protection system

KANG PENGJU

Elevator system with regulated input power

DRAPER JAMES M

Electromagnetic safety trigger

KWON YISUG

Elevator motion profile control including non-instantaneous transition between jerk values

PIECH ZBIGNIEW

Brake

MILLER ROBIN MIHEKUN

Elevator system door frame that supports guide rails

GARFINKEL MICHAEL

Calibration of wear detection system

GORBOUNOV MIKHAIL B

Elevator machine motor and drive and cooling thereof

HUBBARD JAMES L

Brake torque control