Safety stop for stopping non-level descent of vertically...

Safety switching system for passenger conveyor

Safety system for a lift installation and method of...

Safety system for an elevator structure

Safety system for closing doors

Saturation control for destination dispatch systems

Scaffolds for builders

Scissor lift control apparatus and method

Screw lift

Sealing device with magnetically movable door seal for a...

Secondary thyristor control for ac wound rotor motors

Secure optical interface for elevator system

Self centering elevator cable safety brake

Self-adjusting control valve for elevators

Self-adjusting elevator leveling apparatus and method

Self-adjusting proximity detecting apparatus

Self-aligning skip hoist for use in sinking shafts

Self-balancing synchronization assembly for a hydraulic...

Self-centering device for compensation ropes or chains of an...

Self-elevating building crane