Abstract: A two-piece vehicle immobilizing device adapted for removable interconnection to a vehicle wheel assembly. The vehicle immobilizing device utilizes an outer arm, an inner arm with inner and outer indexing stops, an engagement dome, and a securing mechanism that provides engagement to the vehicle wheel assembly to prevent unauthorized removal.

Abstract: The present invention is adapted to immobilize a vehicle by utilizing a pair of selectively interconnected chocks that are placed fore and aft of a tire. The chocks are preferably used to secure aircraft and/or aircraft ground support equipment from unauthorized motion in airport parking areas.

Abstract: An automated fee collection and ticket dispensing machine is disclosed that is capable of operating under a variety of operating modes. The machine permits users to purchase a variety of passes. The disclosed machine includes printers to produce receipts or passes for services or activities. Payment may be made using credit cards, debit cards or cash. The device is provided with networking means, to allow central control and monitoring of the device. Power for the machine may be provided by hard-wiring the device to conventional AC power lines, by solar panels, by batteries, or a combination of any of these. The user interface includes a video output screen with “touch screen” capability to receive user input, audio output means, and a proximity sensor to activate the machine when a user approaches. Additionally, security means are provided to deter potential thieves or vandals.

Abstract: The present invention is adapted to immobilize a vehicle by utilizing a pair of selectively interconnected chocks that are placed fore and aft of a tire. The chocks are preferably used to secure aircraft from unauthorized motion in airport parking areas.

Abstract: An automated fee collection and ticket dispensing machine is disclosed that is capable of operating under a variety of operating modes. The machine permits users to purchase a variety of passes. The disclosed machine includes printers to produce receipts or passes for services or activities. Payment may be made using credit cards, debit cards or cash. The device is provided with networking means, to allow central control and monitoring of the device. Power for the machine may be provided by hard-wiring the device to conventional AC power lines, by solar panels, by batteries, or a combination of any of these. The user interface includes a video output screen with “touch screen” capability to receive user input, audio output means, and a proximity sensor to activate the machine when a user approaches. Additionally, security means are provided to deter potential thieves or vandals.

Abstract: The present invention is adapted to immobilize a vehicle by utilizing a pair of selectively interconnected chocks that are placed fore and aft of a tire. The chocks are preferably used to secure aircraft from unauthorized motion in airport parking areas.

Abstract: An automated fee collection and ticket dispensing machine is disclosed that is capable of operating under a variety of operating modes. The machine permits users to purchase a variety of passes. The disclosed machine includes printers to produce receipts or passes for services or activities. These receipts and passes may be printed for each specific user, and may feature a machine-readable bar code. The disclosed machine also includes a bar code reader, allowing users to return printed receipts or passes at the machine, and to receive credit for any unused portion. Payment may be made using credit cards, debit cards or cash. The device is provided with networking means, to allow central control and monitoring of the device. Power for the machine may be provided by hard-wiring the device to conventional AC power lines, by solar panels, by batteries, or a combination of any of these. Power consumption is held to a minimum by providing a “sleep” mode.

Abstract: An automated fee collection and ticket dispensing machine is disclosed that is capable of operating under a variety of operating modes. The machine permits users to purchase a variety of passes. The disclosed machine includes printers to produce receipts or passes for services or activities. These receipts and passes may be printed for each specific user, and may feature a machine-readable bar code. The disclosed machine also includes a bar code reader, allowing users to return printed receipts or passes at the machine, and to receive credit for any unused portion. Payment may be made using credit cards, debit cards or cash. The device is provided with networking means, to allow central control and monitoring of the device. Power for the machine may be provided by hard-wiring the device to conventional AC power lines, by solar panels, by batteries, or a combination of any of these. Power consumption is held to a minimum by providing a “sleep” mode.

Abstract: An automated fee collection and ticket dispensing machine is disclosed that is capable of operating under a variety of operating modes. The machine permits users to purchase a variety of passes. The disclosed machine includes printers to produce receipts or passes for services or activities. These receipts and passes may be printed for each specific user, and may feature a machine-readable bar code. The disclosed machine also includes a bar code reader, allowing users to return printed receipts or passes at the machine, and to receive credit for any unused portion. Payment may be made using credit cards, debit cards or cash. The device is provided with networking means, to allow central control and monitoring of the device. Power for the machine may be provided by hard-wiring the device to conventional AC power lines, by solar panels, by batteries, or a combination of any of these. Power consumption is held to a minimum by providing a “sleep” mode.

Abstract: A vehicle immobilizing device adapted for removable interconnection to a vehicle wheel assembly for temporarily immobilizing the vehicle. The vehicle immobilizing device utilizes an outer arm, an inner arm, an engagement dome, a self-positioning tire stop, and a securing mechanism which in combination provides engagement to the vehicle wheel assembly to prevent unauthorized removal.

Abstract: A vehicle immobilizing device adapted for removable interconnection to a vehicle wheel assembly for temporarily immobilizing the vehicle. The vehicle immobilizing device utilizes an outer arm, an inner arm, an engagement dome, and a securing mechanism which in combination provides engagement to the vehicle wheel assembly in at least four distinct locations to prevent unauthorized removal.

Abstract: An easily portable ventilating heater to supply either ambient fresh air or warm fresh air to utility workers while working in an underground utility installation. The ventilating heater comprises a blower unit and a heater unit. The blower unit can be used and operated without the heater being in operation. On the other hand, the heater cannot operate unless the blower unit is in operation. The ventilating heater has seveal safety features so that the heater automatically shuts down if the heater exceeds a pre-set temperature of about 200.degree. F., the inlet air flow is interrupted or the power or gas supply is interrupted. The ventilating heater automatically restarts once the heater temperature goes below the pre-set temperature and there is no interruption of air or gas flow or power. The heater uses liquid propane gas and the electrical system can be A.C. or D.C.