| 摘要 |
A patient transfer device comprises a belt connected at its ends to first and second take-up and let-out reels and in its extension from the first reel to the second reel passes over supporting and guiding means to define in turn an upper patient supporting portion and a lower ground engaging portion. Driving means are provided for selectively rotating each of said reels to provide two modes of operation, the course of the belt over the supporting and guiding means being such that in each of the two modes the belt is moving in the same direction relative to the ground over its upper patient supporting portion and its lower ground engaging portion. An auxiliary belt take up and let-out device is connected to the belt at a position between its upper patient supporting portion and its lower ground engaging portion, and can be selectively locked to enable the two modes of operation to be performed. Actuating means are provided for said auxiliary device and locking-means for locking said first reel so that third and fourth modes of operation are provided in which the belt movement is between the auxiliary device and the second reel so that the transfer device can track along with a patient on it. |
