Abstract: A network control system of one node of a communication network includes a data link stage and a session stage which provide a priority protocol. The network control system includes a storage and the data link stage stores received messages in the storage. When the number of stored messages reaches a predetermined limit, the data link stage limits the receipt of messages to priority messages. The session stage is arranged such that if it and a session stage of another node simultaneously initiate a session service, a connection is established, the session stage having a higher priority completes its session first, and the connection is maintained to permit the lower priority session stage to complete its session.

Abstract: A network control system for use in a communication network controls the receipt and transmission of messages between at least a pair of nodes of the network. Messages conveyed within the network include short messages having a length less than a predetermined number of bytes and long messages having a length greater than the predetermined number of bytes. The network control system is located at least at one of the nodes and includes a connectionless network control portion for controlling the transmission and receipt of the short messages and a connection-oriented network control portion coupled to the connectionless network control portion for establishing a connection with the other node for controlling the transmission and receipt of the long messages between the pair of nodes.

Abstract: A sensor is disclosed which exchanges with associated data acquisition equipment a digital attribute signal, distinct from its transducer output signal, on the occurrence of a predetermined event. The invention is particularly illustrated with reference to an accelerometer which transmits sensor identification data to associated data acquisition equipment when power is first applied by using the same two signal lines as are used to provide power to the sensor and to convey the sensor output signal to the equipment. After the identification data is transmitted, the apparatus operates as a buffer amplifier to modulate the transducer output signal onto the same two signal lines.

Abstract: A device for heating a plurality of radiant absorbers which utilizes a source of radiant energy in conjunction with a plurality of curved reflective surfaces. The reflective surfaces function to provide a device which directs essentially all of the radiation emitted by the radiant source onto the radiant absorbers. High efficiency is obtained as well as the ability to heat more than one radiant absorber simultaneously. Reflective surfaces can comprise, in general, curved surfaces, multiradius surfaces, or portions of ellipses.

Abstract: A reheating and blow molding system utilizing an indexing plate having pairs of core pins mounted on the periphery. Radiant heaters heat parisons mounted on the core pin to a temperature suitable for blow molding while the parisons are rotated in response to movement of a spin belt. Rotation of the parisons during heating provides greater uniformity of heating. Tapered shanks remove the core pins from core pin holders and dispose the parisons in a mold for blow molding. The core pins are then disposed in the core pin holders and indexed to a subsequent indexing location where the finished article is removed.