Elevators TRIZ Cases
- Elevator Car Frame Retractable Crosshead for Maintenance Access
A retractable crosshead connects and separates to provide structural support or maintenance access in elevator car frames.
- Elevator Rope Sway Detection and Damping via Movable Mass
Strategically positioned dampers detect rope sway contact to adjust elevator operations, reducing vibration damage in high-rise buildings.
- Elevator Braking Device Segmented Cylinder Control
Segmented brake cylinders adjust force levels via load detection, resolving the trade-off between passenger safety and system complexity.
- Intersecting Under-Car Pulley Arrangement for Dual Elevator Cars
Dual elevator cars share a single hoistway using intersecting under-car pulleys to route ropes independently.
- Elevator Brake Force Monitoring via Differential Spring Detection
Differential spring force monitoring eliminates sensor drift and temperature errors in elevator brakes by comparing open and closed position forces.
- Elevator Call Automation via Gesture and Beacon Intent Detection
Beacon signal analysis combined with gesture recognition determines user intent, eliminating unnecessary elevator calls caused by false positive detections.
- Virtual Elevator Panel Using Projected Interface
A projector creates a virtual car operating panel inside an elevator car for passenger interaction.
- Elevator Destination Floor Registration Device with Presence Detection
A destination floor registration device uses a human detection sensor to capture voice input while monitoring passenger proximity.
- Elevator Rope Elastomer Jacket Yarn Pattern Friction Control
Integrating yarns into an elastomer jacket creates a surface pattern that tunes the friction coefficient, resolving excessive friction and cracking issues.
- Hydraulic Elevator Force Measurement Without Locking
Force measuring device detects elevator car weight and hydraulic pressure to determine maximum lifting force without damaging locking devices or guide rails.
- Elevator Cab Isolation via Flex Joints and Isolators
Flex joints and isolators decouple the elevator cab from carriage noise and vibration, resolving ride comfort issues in ropeless systems.
- Lift Device Remote Monitoring via AI Code Event Mapping
Computer vision maps elevator controller code events to physical operations, resolving proprietary format conflicts and enabling centralized maintenance.
- Elevator Access Control Override Landing Matrix
Access control system overrides elevator landing matrices for emergency responder entry.
- Rack-and-Pinion Elevator Cage Adjustment Mechanism
A rack-and-pinion adjusting device moves double-decker elevator cages in opposite directions for precise spacing control.
- Elevator Car Safety Device for Drift Immobilization
Positioning sensors detect drift beyond limits and activate a parachute brake to instantly stop the car, preventing accidents during remote maintenance.
- U-Shaped Support for Elevator Light Curtain Detectors
A longitudinal support device with a U-shaped slot shape-locks elevator light curtain detectors, eliminating screw holes that compromise IP-class ratings.
- Counterweight Speed Governor Vertical Placement in MRL Elevators
A counterweight speed governor sits higher than the counterweight to detect overspeed while aligning with guide rails.
- Elevator Load Bearing Member with Roughened Urethane Jacket
Roughening the urethane jacket surface reduces adhesion between the load bearing member and traction sheave while maintaining consistent friction.
- Microperforated Elevator Door Indicator with Dynamic Lighting
A microperforated landing door leaf integrates actuatable light sources to display floor numbers and movement direction for intuitive user guidance.
- Elevator Brake Control for Smooth Startup Torque
Stepwise brake release and proportional integral torque control reduce car shaking during startup despite weighing sensor errors.
- Elevator Limit Switch System Inspection Mode Access
A limit switch system uses a controller to activate an inspection device that extends elevator car travel beyond normal stopping points.
- Elevator Light Projection for Traffic Guidance Visibility
Light sources illuminate visible objects to guide elevator traffic, resolving impaired visibility caused by crowds and architectural structures.
- Elevator Pivotable Balustrade for Counterweight Collision Avoidance
A pivotable elevator car balustrade adjusts its orientation to optimize fall protection and maintenance access.
- Elevator Brake Failure Detection via Torque Imbalance
Control system detects brake failure by hovering the car to confirm loss of holding torque, then moves it using weight imbalance to enable safe evacuation.
- Multicar Elevator Traffic Pattern Adjustment for Failure Rerouting
Elevator control system adjusts traffic patterns to reroute cars around detected failures.
- Spring-Loaded Tensioning Device for Elevator Overspeed Governor Rope
A spring-loaded tensioning device with guide columns and a carriage system provides precise guidance for an elevator overspeed governor rope.
- Elevator Brake Current Derivative Analysis for Mobile Plate Monitoring
Analyzing braking current derivatives detects mobile plate position deviations, eliminating complex sensor installations and reducing maintenance needs.
- Elevator Position Detection Using Magnetic ID Sequences
An eddy current detection unit reads magnetic properties from an ID sequence to specify the position of an elevating body.
- Elevator Position Ruler Guide with Protective Limitator
A transparent protective cover shields the elevator position ruler from mechanical damage while allowing optical sensors to read data.
- Elevator Brake Control Circuit Isolation for Contact Adhesion
A control circuit separates brake excitation coils from contracting brake circuits using isolation switches and level conversion.