Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Object Groupings and Systems (hierarchy name)
4. systems (equipment)
5. [systems by function]

Narrower term/s

• vertical conveying systems[+]
  • dumbwaiters (conveying systems)
  • elevators [+]
    • [elevators by form] [+]
      • double-deck elevators
      • observation elevators
    • [elevators by function] [+]
      • grain elevators [NP]
      • freight elevators [+]
      • passenger elevators
      • service elevators
      • crop elevator [NP]
    • [elevators by mode of operation] [+]
      • automatic elevators
      • hydraulic elevators
      • traction elevators
      • electric elevators
  • manlifts
  • platform lifts
• [diagonal and multidirectional conveying systems][+]
  • inclined elevators
  • escalators
  • inclined lifts [+]
    • stair lifts
    • inclined wheelchair lifts
  • moving ramps
  • pneumatic tubes
• horizontal conveying systems[+]
  • moving walkways

Anotations

Scope note:

Building systems or devices designed to move people, equipment, or goods through a building or complex; for networks of equipment designed to move similar items through and between settlements, use "transit systems;" for machinery designed for the continuous transport of material, use "conveyors."