A patient support apparatus for traversing objects supported on ground surfaces. The patient support apparatus comprises a patient support deck, and a base to support the patient support deck from the ground surface. At pair of caster wheel assemblies spaced from each other are coupled to the base for pivoting movement about respective pivot axes cooperating to define a reference plane. A frame guard coupled to the base defines first and second ramp surfaces each disposed at an angle relative to the reference plane. The first ramp surface is arranged to engage objects before they contact one or more of the caster wheels when the patient support apparatus moves in a first direction. The second ramp surface is arranged to engage objects before they contact one or more of the caster wheels when the patient support apparatus moves in an opposite, second direction.

A patient support apparatus for traversing objects supported on ground surfaces. The patient support apparatus comprises a patient support deck, and a base to support the patient support deck from the ground surface. At pair of caster wheel assemblies spaced from each other are coupled to the base for pivoting movement about respective pivot axes cooperating to define a reference plane. A frame guard coupled to the base defines first and second ramp surfaces each disposed at an angle relative to the reference plane. The first ramp surface is arranged to engage objects before they contact one or more of the caster wheels when the patient support apparatus moves in a first direction. The second ramp surface is arranged to engage objects before they contact one or more of the caster wheels when the patient support apparatus moves in an opposite, second direction.

A wheel for a displacement truck having a wheel body and removable ribs is provided. The ribs are segmented into at least two parts to facilitate removal from the wheel body.

A rail-based floor conveyor system, with a floor conveyor with concavely grooved wheels and rails having a surface which, when in contact, dips at least partially into the grooved area of the wheels, thereby producing at least two load-bearing lines during the movement of the floor conveyor, wherein a wheel holder is provided for each wheel, with at least one horizontal axis of rotation for each wheel and a vertical axis of rotation to a bearing connected to the floor conveyor, and wherein the wheels can be moved by drives or manually on the rail, bearing including a first bearing part and a second bearing part, wherein one of the bearing parts has a concave surface section, which is at least partially in contact with a convex surface section of the respective other bearing part, and wherein both bearing parts are movable relative to one another while maintaining contact.

A wheel for a displacement truck comprises a wheel body and removable ribs. The ribs are segmented into at least two parts to facilitate removal from the wheel body.