Abstract: A valve in the fuel line of an internal combustion engine of the type which is normally biased to its closed position, causing engine shut-down, but prevented by an opposing oil pressure from doing so; the valve, in effect, therefore being one which promotes engine shut-down in the event of failure in the engine oil pressure. As an improvement to this class of valves, of which the within valve is a significant contribution, the valve has an engine shut-down function related not merely to the required oil pressure at engine start-up, but also to required oil pressures at full power speed as well as intermediate power speeds throughout its contemplated range of operation.

Abstract: In a trash-collecting vehicle in which fork lifts raise the trash container into an elevated dumping position, a safety device is proposed which applies the vehicle parking brakes and thus immobilizes the vehicle against movement when the fork lifts are raised and thus are in a position capable of striking a ceiling projection, door frame, etc., or when a closure on top of the vehicle is also in a raised position and similarly is capable of striking a ceiling projection or the like.