Abstract: A dual-mode propane fuel dispenser apparatus and a metal skid framework supporting a bottled gas dispensing station on one side and a motor vehicle fuel pump carried at an opposite side. Dispensing nozzles at each side are coupled to a common supply tank and solenoid valves are used to control flow to the selected dispenser. The bottled gas station has a scale to measure weight to determine when the container is full. The fuel dispenser includes a meter which determines the volume of fuel dispensed. A computer and visual displays are provided to show amounts dispensed to either a vehicle tank or bottled gas container and the price charged for each.

Abstract: An electronic device for recording the fuel usage of a vehicle capable of operating on multiple fuel types. The invention tracks time, distance, and fuel mixture information in association with the type of fuel used by a multi-fuel vehicle. The device generally consists of a power supply; an electronic system clock; a data storage component; one or more connections to the vehicle which determine when the motor is running, which fuel type has been selected, which fuel type is being burned, the relative fuel content, and fuel performance information; a signal interface for converting analog vehicle signals to digital signals; an analog-to-digital convertor; a microcomputer to interpret the digital signals; a system logic control circuit for coordinating the writing of information to the data storage component; an external data interface for direct or indirect access to the contents of the data stored in memory; and a visual display.

Abstract: A device for recording the fuel usage of a vehicle capable of operating on multiple fuel types. The invention is a digital device which tracks time and/or distance parameters for each fuel type burned and stores these parameters in memory. In one embodiment, the device detects when the vehicle engine is running and what type of fuel is being burned. An electronic system clock provides the timing reference for measuring the length of time each fuel type is burned. The memory is periodically updated with the timing information. A second embodiment tracks traveling distance in a similar manner. The user may display the contents of any parameter recorded by the device on a numeric display.