Abstract: A system for remote control of locomotives over a single time division multiple access network is provided. The system includes a locomotive control unit configured to operatively control a locomotive. The locomotive control unit is suitable for transmitting and receiving information via the network. The system also includes at least two operator control units suitable for transmitting and receiving information via the network and a hump control unit suitable for transmitting and receiving information via the network. The network employs both spatial and frequency diversity for remote control. The locomotive control unit, the at least two operator control units, and the hump control unit will only transmit in a respective defined period of time.

Abstract: A system for remote control of locomotives over a single time division multiple access network is provided. The system includes a locomotive control unit configured to operatively control a locomotive. The locomotive control unit is suitable for transmitting and receiving information via the network. The system also includes at least two operator control units suitable for transmitting and receiving information via the network and a hump control unit suitable for transmitting and receiving information via the network. The network employs both spatial and frequency diversity for remote control. The locomotive control unit, the at least two operator control units, and the hump control unit will only transmit in a respective defined period of time.

Abstract: A wrapper to be wrapped around a stack of disc-like tablets includes a portion carrying a layer of heat-activatable adhesive, which is activated just prior to wrapping the wrapper around the stack to secure it in position on the stack. The heat activation is provided by a short, hot blast of air directed onto a surface of the wrapper opposite that on which the heat-activatable layer is located, whereby the applied heat must travel through a portion of the wrapper to reach the adhesive layer and activate it. The air blast is heated by heaters which include elongated heat exchangers having rectangular grooves or slots extending along the length of their outer surfaces, through which grooves the air blast is constrained to travel for efficient, rapid heating.