Patient support apparatus configured for one or more of the care, maintenance or treatment of a patient, have internal components that become soiled in use and must be cleaned and disinfected. The method performs this required cleansing and disinfecting using an all-automated and all hands-free,...http://www.google.com/patents/US5702536?utm_source=gb-gplus-sharePatent US5702536 - Method of cleaning a patient support device for care, maintenance, and treatment of the patient 
