Devices to which a wheelchair is attached that facilitate movement up and down stairs

Carts and other types of vehicles, manually or electrically powered, to which a wheelchair can be securely fastened that allow the wheelchair, while occupied, to climb and descend stairs safely. Powered stair-climbing transporters, see 12 17 03. Stair-climbing powered wheelchairs, see 12 23 15. Assistive products for vertical accessibility, see 18 30.