All position tractor
Cog wheel railway
Conveyor having self-propelled carriers and track with pivotal r
Conveyor having self-propelled carriers with a first motor for h
Conveyor system with conveyor carriage running on rails
Driving device for rail vehicles having friction and cog drives
Electric motor driven traversing balancer hoist
Electric overhead trolley conveyor
Friction and rack and pinion locomotive
Guidance system with a truck guided on a rail
Monorail access system for making a boat handicapped accesible
Motorized portable system and method for aiding persons in ascen
Motorized portable system for aiding persons in ascending or des
Motorized system and method for aiding physically-impaired perso
Multi-position travelling carriage with flexible track
Overhead rail conveyor system with improved traction having elas
Pallet conveyor system
Rack and pinion and adhesion drive locomotive
Rack and pinion drive trolley with slip-ring drive wheel
Rack-rail assembly for a mining machine