A caster mounted weighing system comprised of at least three weigh modules mounted to the bottom of a bed, container, or other surface suitable for weighing, a control unit, a junction box, and a means for transmitting signals to and from the weigh modules, junction box, and control unit. The weigh...http://www.google.ca/patents/US5823278?utm_source=gb-gplus-sharePatent US5823278 - Caster mounted weighing system