| 主权项 |
1. A bed adapted to be supported on a floor, comprising:
a plurality of wheels; a headboard and a footboard, the footboard spaced apart from the headboard, the headboard and the footboard supported by the plurality of wheels; a support deck supported by the plurality of wheels, the support deck including a head end positioned proximate the headboard and a foot end positioned proximate the footboard, and at least one support surface extending between the head end of the support deck and the foot end of the support deck; a first lift system supported by the plurality of wheels, the first lift system operatively coupled to the support deck to raise and lower the support deck relative to the plurality of wheels while the plurality of wheels remain stationary; and a second lift system supported by the plurality of wheels, the second lift system operatively coupled to the support deck to raise and lower the support deck relative to the plurality of wheels while the plurality of wheels remain stationary, the second lift system including a lower frame, an upper frame, and a lifting assembly coupled to the lower frame and the upper frame, the second lift system being moveable from an unexpanded configuration wherein the lower frame and the upper frame are separated by a first separation to a first expanded configuration wherein the lower frame and the upper frame are separated by a second separation due to a downward movement of the lower frame relative to the plurality of wheels and a second expanded configuration due to an upward movement of the upper frame relative to the plurality of wheels. |
