US Patent 8341777 Hospital bed having caster braking alarm

A patient support is connectable to an external power source. The patient support includes a bedframe supported on a floor, a plurality of wheels coupled to the bedframe, and a brake configured to prevent the bed from moving on the floor. The brake is moveable between a braked position and an unbraked position. The patient support also includes a controller configured to activate an alarm when the brake is moved to the unbraked position when the bed is connected to the external power source.