Abstract:
A diversion valve fluid coupling, permitting alternate flows in first and second operating positions, including a valve housing with inlet, first and second outlet ports; a quick disconnect coupling attached to the second outlet port and a seal interposed therebetween; a movable diverter valve assembly, having interconnected actuating and opposing valves; the actuating valve, in the first operating position, having a first sealing engagement with the seal; the opposing valve, in the second operating position, having a second sealing engagement with a first outlet port; a biasing member, biasing the diverter valve into the first sealing engagement, blocking the second outlet port while permitting flow to the first outlet port; and, for the second operating position, a nipple member, removably mating with the quick disconnect coupling and translating the diverter valve into the second sealing engagement, blocking the first outlet port while permitting flow into the second outlet port.
Abstract:
A thermistor is pulsed with energy, and a time constant of decay of temperature is calculated based on measured resistance of the thermistor over a number of known intervals. The time constant is representative of the mass air flow. The ambient air temperature may be found without waiting for the thermistor to reach the ambient air temperature.
Abstract:
A medical imaging system including an imaging device and a patient positioning area in close proximity to the imaging device. A protective bumper is attached to, and conforms to a shape of the imaging device. The system may also include a detection system that has a pressure sensing device.
Abstract:
An all-optical processing system coverts or interfaces optical signals from a wavelength division multiplexed (WDM) form to an optical time divisional multiplexed (OTDM) form. The initial WDM signal typically comprises a non-return to zero (NRZ) signalling format. The system includes a plurality of NRZ data modulated, cw optical WDM channels which are cross-phase modulated, and thus are spectrally broadened, in an optical non-linear element, by a strong clock pulse signal. The resultant signal comprises an RZ representation of the original NRZ signal. The RZ signal is temporally shifted by a dispersive element which temporally shifts each wavelength channel by a predetermined amount, to produce a wavelength-interleaved OTDM signal. The signal is then wavelength converted by cross-phase modulation with a cw control beam in a second non-linear optical element to provide a single wavelength OTDM signal.
Abstract:
Difficulties with prior disrupted communications restoration systems are overcome by employing for each node of a communications network a restoration processor in which predetermined functions of the restoration process are managed by respective ones of a plurality of manager modules. The manager modules are arranged to be directly interconnected only with a so-called restoration manager that coordinates the operations of the modules and provides for their interconnection needs. In a preferred embodiment, four manager modules, a) a user interface manager module, b) a digital cross-connect system (DCS) manager module, c) a distributed communications manager module and d) a core algorithm manager module, are interconnected and coordinated by the restoration manager. Additional robustness to the restoration process is provided by way of enhancements to the functionality of the core algorithm manager module. These enhancements include: a) improved glare processing (resolution of contention for a particular resource), b) "broadcast" of takedown messages, c) elimination of the need for time-outs during automatic restoration, d) a "peek ahead" routine that immediately takes down a needed resource that is already on a list to be taken down, e) use of a "minimax factor" and f) a "quick fix" technique for use in cases of limited failure of circuits between two nodes. The restoration process can also be cascaded so that it sequentially restores one level at a time, the levels being defined by the hierarchy of digital transmission rates employed in the network.
Abstract:
A random access memory (RAM) device that allocates memory cells to first-in first-out (FIFO) memory. The RAM device has an array of addressable memory cells that are selected by row and column decoders. The memory cells and decoders have dual read and write lines that allow simultaneous read and write operations on the memory cells. The memory cells can store data from at least two data streams including, by way of example, a stream of U data and a stream of V data from an input device such as a YUV video processor. The RAM device includes a control circuit which generates separate read and write pointers for the U and V data. The control circuit also generates separate U and V minimum and almost full trigger pointers. Data is written into the memory cells until a write pointer reaches either a minimum trigger pointer or an almost full trigger pointer. When a write pointer exceeds a minimum or almost full trigger pointer, the control circuit requests that data be read from the memory cells so that morse data can be written into the memory cells. The minimum and almost full trigger pointers are programmable so that the memory space allocated to each data stream is dynamically variable.
Abstract:
A state machine circuit comprising a first phased circuit clocked by a first phased clock and a second phased circuit clocked by a second phased clock. The first phased circuit includes a first input register which sequences and stores at least one input signal; a first combinatorial logic network which produces a number of output control signals wherein each of the control signals has a next state signal and a jump index signal; a first multiplexer to select one of the output control signals; and a first output register which sequences and stores the selected output control signal and also (i) feeds back the next state signal into the first combinatorial logic network, (ii) outputs the jump index into a second selector, and (iii) outputs the selected control signal, absent the next state signal and the jump index, to a device. The second phased circuit is identical in structure and function to the first phased circuit and includes a second input register, a second combinatorial logic network, a second multiplexer and a second output register.
Abstract:
Each data sending high speed circuit generating and sending a stream of data slices and a stream of clock pulses is provided with a sync pulse generation circuit for synchronously generating and sending an accompanying stream of periodic sync pulses. The various streams of data slices, clock pulses, and periodic sync pulses incur varying amount of delays as they travel from the data sending high speed circuits to a data acquisition circuit. The data acquisition high speed circuit is provided with a plurality of circular buffer chains of appropriate length for independently buffering the skewed data slices until all corresponding data slices have been received and buffered, and then concurrently reading the buffered corresponding data slices out of the circular buffer chains. The data acquisition high speed circuit is also provided with a plurality of corresponding independent write address generators and a common read address generator for generating the independent write buffer addressed and the synchronized read buffer addresses using the data clocks and the periodic sync pulses. As a result, the skewed data slices are deskewed or resynchronized as they are read out of the circular buffer chain.
Abstract:
A method of making an explosive in the form of an emulsion, which includes two stages being a first stage comprising directing a plurality of 0.5 to 5 mm diameter jets of the discontinuous phase into the continuous phase, in the presence of an emulsifier, and feeding the continuous phase containing the discontinuous phase through a static mixer to form a relatively coarse, fuel-rich emulsion; and a second stage comprising directing a plurality of 0.5 to 5 mm diameter jets of the discontinuous phase into the continuous phase of said coarse emulsion, and feeding the coarse emulsion with the added discontinuous phase through two further static mixers arranged in series. The invention further extends to an apparatus for performing the method of the invention.
Abstract:
Apparatus for the electrophoretic separation of particulate material from a sludge, slurry or the like has an L-shaped scraper or scrapers mounted on an endless chain for removing the particulate material from the surface of the anode. A cam-driven collector engages the scraper or scrapers to remove the material therefrom so that it falls downwardly to removal means.