Abstract: A system, method and apparatus for use on vehicles having road wheels with pneumatic tires that includes sensors that produce signals that are a measure of the rotational speed of said wheels, indicators arranged to provide information to the driver of the vehicle, and a computer operably associated with said sensors and indicators. The computer is arranged to monitor the wheel speed sensors during vehicle operation, and to perform at least one of the functions of: determining a value that represents tire inflation pressure and signaling the driver when this value falls below a predetermined value, determining a value that represents tire inflation pressure and signaling this value to the driver, calculating a value that represents vehicle speed and signaling this value to the driver, and calculating a value that represents distance traveled by the vehicle and signaling this distance to the driver.

Abstract: A boiler control system for boilers fired by solid fuels wherein the fuels are carried through the combustion zone of the boiler on a traveling grate and wherein the air flow for combustion as supplied to the undergrate region utilizes a control of the fuel rate from a deviation of the outlet pressure from the desired value with the control of the air flow to the undergrate region maintained generally in proportion to the steam flow from the boiler with the proportionality being biased from the deviation of the outlet pressure from its desired value.

Abstract: A telescoping universal joint comprising a driving member, a driven member, torque transmitting means between the driving and driven member, and means for limiting the relative axial movement in both directons between the driving member and the driven member. The universal joint is described as being utilized together with a second universal joint in a transverse drive line of an automotive vehicle between a differential and a wheel or in a longitudinal drive line between a transmission and a differential.

Abstract: A telescoping universal joint comprising a driving member, a driven member, torque transmitting means between the driving and driven member, and means for limiting the relative axial movement in both directions between the driving member and the driven member. The universal joint is described as being utilized together with a second universal joint in a transverse drive line of an automotive vehicle between a differential and a wheel or in a longitudinal drive line between a transmission and a differential.