A system for determining the location of a patient on a support. The system includes a first and second sensor coupled to a patient's support surface and being at least laterally spaced. A first load signal from the first sensor has a first sensitivity greater than a second sensitivity of a second load...http://www.google.com/patents/US6133837?utm_source=gb-gplus-sharePatent US6133837 - Patient position system and method for a support surface
