Secondary thyristor control for ac wound rotor motors

Secure optical interface for elevator system

Segmented guide eye

Self adjusting hoist brake

Self centering elevator cable safety brake

Self contained drum dumper for fork trucks

Self contained power assist lift jack

Self erecting scaffolding

Self propelled lift trucks

Self tailing winch

Self-adjusting brake engine limit switch assembly

Self-adjusting control valve for elevators

Self-adjusting elevator leveling apparatus and method

Self-adjusting proximity detecting apparatus

Self-adjusting slide block for telescopic crane jibs

Self-adjusting transformer sling

Self-aligning and end fixity connector for connecting a...

Self-aligning grapple swivel

Self-aligning skip hoist for use in sinking shafts

Self-balancing synchronization assembly for a hydraulic...