An elevator system has a low rise group of floors and a high rise group of floors and a swing car having doors and car call buttons enabling it to operate in either the low rise or high rise, the swing car being assignable to one or the other rise depending upon the burden, but also being able to accept...http://www.google.fr/patents/US5480005?utm_source=gb-gplus-shareBrevet US5480005 - Elevator swing car assignment to plural groups
