Abstract: A system for recycling vented atmosphere gas discharged from a heat treatment chamber utilizing a protective atmosphere gas therein. The system includes an atmosphere recycling apparatus configured to receive the vented atmosphere gas. The atmosphere recycling apparatus includes a gas separator configured to separate the vented atmosphere gas into a purified atmosphere gas stream and an impure stream. The atmosphere recycling apparatus is configured to feed the purified atmosphere gas stream to the heat treatment chamber. A storage vessel can be provided to receive the purified atmosphere gas stream from the atmosphere recycling apparatus, and configured to supplement an atmosphere gas supply to the heat treatment chamber with the purified atmosphere gas stream.

Abstract: A refrigerator includes a fresh food stirring fan assembly arranged within a fresh food compartment. The stirring fan assembly functions to recirculate air in order to minimize temperature stratification in the fresh food compartment. The stirring fan assembly preferably incorporates a filter to remove airborne debris and absorb odors. In accordance with one preferred embodiment of the invention, the fresh food stirring fan is operated whenever a damper controlling an inlet flow of cooling air to the fresh food compartment is in a closed position.

Abstract: An integrated circuit ("IC") implementing the three MIL-STD-1553 defined functions of bus controller, remote terminal, and monitor terminal implements a register-based architecture that allows for autonomous operation in all three modes, one or more modes being operable simultaneously, operation of the IC being autonomous in that the IC initializes operating variables in its internal registers and in external memory upon power up.

Abstract: An integrated circuit ("IC") interfaces a piece of communications equipment to a MIL-STD-1553 bus in accordance with the MIL-STD-1553 interface standards and operates in the MIL-STD-1553 defined bus controller mode of operation. The IC implements a command block configuration of data storage locations in an external memory. The command block includes a plurality of words arranged contiguously, a first word indicative of one of a plurality of different opcodes that define operation of the IC. The command block words include a MIL-STD-1553 defined command to be transmitted on the bus by the IC. A plurality of command blocks are arranged contiguously in a minor frame format. In order to sequentially execute a plurality of minor frames at different frequencies, the IC contains an internal timer that controls execution time of each minor frame.

Abstract: An integrated circuit ("IC") implementing the three MIL-STD-1553 defined functions of bus controller, remote terminal, and monitor terminal has a register based architecture that allows for concurrent remote terminal and monitor terminal operation. The IC may communicate on the bus in the remote terminal mode of operation for only one specific address. For a plurality of other addresses, the IC may monitor the bus in the monitor terminal mode of operation. While concurrently configured, the IC is precluded from monitoring its own remote terminal address, and the remote terminal has priority over the monitor terminal for message processing.