#$%^&*AU2017279786A120180712.pdf#####ABSTRACT A patient transfer apparatus is provided and includes a frame, a seat assembly coupled to the frame, and a track assembly coupled to the frame. The track assembly includes a moveable track for traversing stairs and a motor configured to drive the track. The apparatus further includes a 5 control system. The control system includes a controller configured to control the motor and to adjust a speed of the apparatus based on at least one of an occupancy of the seat assembly upon traversing the stairs and a condition of the stairs. -51 -1/18 180 32 -- 28 34 20 34. 160 22 22 52 60 42 21 152a 156 224 50 26. 36 0 0 36 2 -2611 0 1580 30 39 38 38 FIG. 1
