| 摘要 |
A stair lift for transporting a load includes a longitudinal guide having a first side running surface and a second side running surface opposing the first side running surface; and a carriage which is transportable along the guide and provided with rollers for guiding the carriage along the guide. The rollers include a first roller having a first roller peripheral friction surface which is in frictional engagement with the first side running surface for guiding the carriage along the guide and a second roller having a second roller peripheral friction surface which is in frictional engagement with the second side running surface for guiding the carriage along the guide. The first roller friction surface is provided with a first roller member, and the first side running surface is provided with a longitudinal first side running surface member which fits complementary with the first roller member.
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