Abstract: A railroad crossing gate is repaired by lowering the crossing gate mechanism with a lever. The end of the lever can contain a conical opening mating with the conical pivot pin on the gate mechanism.

Abstract: Disclosed herein is a wireless interactive presentation system that operate in cooperation with a host computer system executing PC compatible application programs capable of generating and displaying text, image and graphic content on a projector or presentation device. The wireless interactive presentation system also includes a wireless data transceiver capable of communicating and exchanging application or system commands and data with a network-based computer system. The wireless interactive presentation system comprises a micro-controller, an infrared receiver and a wireless transceiver to provide short-range communication between the remote system and wireless interactive presentation system. The microcontroller of the wireless interactive presentation system executes a control program to process the commands and data received from remote computer via the wireless transceiver and provides the resultant application window, template, or graphical display data to projector or presentation device.

Abstract: Disclosed herein is a personal mobile display that operate in collaboration with a host computer system that include a processor for executing PC compatible application programs capable of generating and displaying a plurality of operational functions and data in response to user specified input. The host system also includes a wireless data transceiver capable of communicating and exchanging application or system commands and data between the host computer and portable display tablet. The portable display tablet comprises a graphics display panel, a micro-controller, and a wireless transceiver to provide short-range communication between the host computer system and portable display tablet. The micro-controller of the portable display tablet executes a control program to process the commands and data received from the host computer via the wireless transceiver and provides the resultant application window, template, or graphical display data to the graphics display panel.

Abstract: A railroad crossing gate is repaired by lowering the crossing gate mechanism with a lever. The end of the lever can contain a conical opening mating with the conical pivot pin on the gate mechanism.