GC GREER COMPANY

Electronic components for construction cranes, namely, load moment indicators for use * as operational aids * in preventing overloading or turning over of construction cranes; electronic rated capacity indicators for monitoring the load moment or tipping point of construction cranes; crane operator aids and warning systems primarily comprised of emergency warning lights, electronic warning bells, and mounted video display monitors showing load information; crane load limiters for use as a safety device to prevent overloading or turning over of construction cranes; anti-two block devices, namely, sensors for detecting and preventing a load hook from being pulled into the boom, and computers for calculating the load moment or tipping point of the crane