Motorized traction device for a patient support
View Patent ↗A patient support including a propulsion device for moving the patient support. The patient support includes a propulsion system having a propulsion device operably coupled to an input system.
1. A patient support comprising:
a bed frame;
a plurality of casters to support the bed frame on a floor;
a power source;
a motor operably coupled to the power source;
a drive track operably coupled to the motor to move the bed frame across the floor, the drive track including a first roller driven by the motor, a second roller, and a belt supported by the first and second roller, the belt including a plurality of belt teeth, the first roller and second roller each include a plurality of roller teeth located on their outer surface, wherein at least a portion of the plurality of roller teeth are sized to engage at least a portion of the plurality of belt teeth, wherein the rollers are spaced apart from the floor;
a pair of side plates to rotatably support the first roller and the second roller;
a drive shaft extending through the first roller and including an axis of rotation, the drive shaft coupled to the motor to drive the first roller; and
a lifter to pivot the second roller about the axis of rotation between a first position with at least a portion of the belt contacting the floor and a second position with the belt out of contact with the floor.
2. A patient support comprising:
a bed frame;
a plurality of casters to support the bed frame on a floor;
a power source;
a motor operably coupled to the power source;
a drive track operably coupled to the motor to move the bed frame across the floor, the drive track including a first roller driven by the motor about an axis of rotation, a second roller, and a belt supported by the first and second roller, the belt including a plurality of belt teeth, the first roller and second roller each include a plurality of roller teeth located on their outer surface, wherein at least a portion of the plurality of roller teeth are sized to engage at least a portion of the plurality of belt teeth, wherein the rollers are spaced apart from the floor;
lifter to pivot the second roller about the axis of rotation between a first position with at least a portion of the belt contacting the floor and a second position with the belt out of contact with the floor; and
a handle configured to receive a user input for controlling movement of the bed frame in at least one of a forward direction and a reverse direction.