A patient support (10) is configured to support a person in at least a horizontal position. A propulsion device (66) may be coupled to the patient support (10) to facilitate movement of the patient support (10) from one location to another. The propulsion device (66) includes at least one wheel (80). A deployment mechanism (82) moves the wheel (80) between a storage position and a use position relative to the patient support (10). The deployment mechanism (82) is motorized. The deployment mechanism (82) uses a toggle force to initiate movement of the wheel (80) from the storage position to the use position.
