Showing papers on "Trap (computing) published in 1985"

Continuous rotary regeneration system for a particulate trap

Abstract: An apparatus and method is disclosed for continuously regenerating a particulate filter trap (A) for an internal combustion engine. The apparatus has means for normally conducting the exhaust gas of the engine to and through the trap (A), the trap (A) having a plurality of generally aligned flow channels (14,15) extending from the entrance face (12) of the trap. The apparatus comprises: (a) movable means (B) effective to shield a segment of the trap entrance face (12) from the full flow of exhaust gas while permitting a portion of the exhaust gas flow to bleed therethrough; (b) electrical resistance heating means (C) having a movable heating element (30) carried by the shield (18) and interposed between the trap face and the shield; and (C) means (D) for substantially continuously moving the shield (18) and element (30) conjointly across the trap face to ignite one or more columns of the particulates in the trap aligned with the shield and element, the ignited particles and bleed flow causing oxidation to proceed throughout the extent of the columns of particulates without need for additional exterior heat

Electric roach trap

Abstract: An electric roach trap comprising a housing with three spaced apart conductors composed of a water pan conductor, a floor and wall conductor and a bait holder conductor. These conductors are connected to an outside power source so that when a roach enters the trap and contacts simultaneously two of these spaced apart conductors, the roach will be electrocuted. The electric roach trap of this invention is safe to handle, easy to clean, has shock proof protection for humans and pets, and has special features such as a window to see into the trap to see if it contains dead roaches and should be cleaned and an indicator light to tell when the trap has power and is operational when it is located in a dark area. An additional feature is that the trap is shock proof in that electrical current to the trap is terminated when the trap is opened by removing the top housing from the bottom housing.

A new approach to the oxidizing behavior of a porous ceramic diesel particulate trap

Abstract: A model simulating the behavior of the porous ceramic trap was developed. The model is based on the assumption that the pore size of the trap combined with the particle size distribution resulting from the trap oxidising activity defines two areas of trap operation: (i) accumulation when no pass-through is permitted, and (ii) continuous regeneration when pass-through is permitted. The mathematical evaluation of the model demonstrates that regeneration depends on the ratio of space-time and oxidation process time constant.

Interface system between a host computer and a peripheral processor with address detection circuitry

Abstract: An interface circuit controls the unloading of a host computer system onto a peripheral processor unit. The interface circuit has a normal mode of operation which is independent of the host computer. During the normal mode, the peripheral unit processes data previously supplied by the host computer. The interface device has a trap I/O mode of operation in which information flows between the host computer and the peripheral unit. The trap I/O mode is initiated by a range of instruction addresses from the peripheral unit. In one embodiment, any instruction address less than a predetermined critical value initiates the trap I/O mode. The host computer acknowledges the trap I/O mode, and executes the instruction at the host level to advance the peripheral process. In the trap I/O mode, the peripheral processor operates simultaneous with and independently of the peripheral unit to permit unloading of the host computer. In addition, the peripheral unit has a faster clock and more operating bits than the host system; and can accelerate the processing of the host data.

Loop type heat pipe

Abstract: PURPOSE:To permit to move heat from upper side to lower side automatically by a method wherein a radiator at the lower part from a heat sink, the first liquid trap having cooling function at the lower part are provided and the second liquid trap is provided on the lower part from the radiator while closed pipe paths connected by pipe paths through a float valve and a check valve are formed for the liquid surface change of heat medium in the first liquid trap and the second liquid trap. CONSTITUTION:In the condition that the level of the heat medium 5 in the second liquid trap 8 rises and it has become higher than fixed value, the float valve 9B is opened and the float valve 9A is closed by driving of the float valve 11A. The heat medium 5 evaporated by heating at the heat sink 1 passes through a steam pipine 4 and rises the pressure of the second liquid trap 8 through the float 9B and it is led by steam pressure difference of the heat medium 5 through the chek valve 10B and the liquid piping 3 and is stored to the first liquid trap 7 kept in low pressure by the cooling function of cooling fins 6 for the heating device 5 in the liquid stored, thereafter, the level of the heating medium 5 in the second liquid trap 8 is discended. In the condition that the level of the heating medium 5 in the second liquid trap 8 descends and it has become lower than the fixed value, the action ascending the level of the heating medium may be effected automatically.

Device for coupling carriers, such as shopping carriers and luggage carriers

Abstract: A device for coupling carriers comprises a housing adapted to be mounted on the carrier and having a face with an opening forming a coupling trap. A flexible cable has one end secured to the housing and an opposite end extending out of the housing which has a plug thereon which is engageable in the coupling trap of an adjacent carrier. The housing also carries a releasable lock which is engageable with the plug to hold it in the trap when it is inserted therein. The device operates electrically under the control of a coin which passes through a coin chute in the housing and actuates an electrical switch which has an actuator portion in the chute. The switch is connected to the lock and it releases the lock and traps the coin in the chute so as to permit release of the plug from the trap and use of the carrier. When the carrier is returned and the plug is again inserted into the trap, the coin is released.

A Hydraulic Trap for Preventing Collector Well Contamination: A Case Study

Abstract: A hydraulic trap in the form of a purge well is proposed for the Forwell collector well K-71. The trap, which will protect well K-71 from contamination by contaminants migrating downgradient from the old Breslube waste disposal site, is based on a qualitative flow net obtained from a finite-element model of the Forwell Aquifer. The trap constitutes pumping at the position of observation well OW 9-80 at a continuous rate of at least 6.1 X 10-3 m3/s. The uniqueness of the trap lies in its simplicity and relatively low cost.

Bellows-actuated thermostatic steam traps

Abstract: In a bellows-actuated thermostatic steam trap (A) having a bellows (41) carrying a valve member (45) of a valve (45/22) for opening and closing the trap, the bellows is disposed between connections (20/21 and 30/31) which are identical to one another so as to be selectively connectable in a steam flow line with the valve (45/22) disposed either downstream of, or upstream of, the bellows (41). The trap includes a metal housing (11/12), the mass of which constitutes at least 70% of the mass of the trap. The trap operates, when connected with the valve disposed downstream of the bellows, in a first mode in which, in normal operation, the trap discharges condensate at a temperature close to saturated steam temperature. When connected with the valve disposed upstream of the bellows, the valve operates in a second mode in which in normal operation condensate is discharged at a temperature significantly below steam temperature. One or other of these modes can be simply obtained, merely be selecting which way round the trap is connected in a flow line.

Annular gas trap

Abstract: Well apparatus for use in injecting corrosion inhibitor into the annulus between casing and tubing strings below an injection/packer assembly positioned in such annulus which includes an annular gas trap positioned below the injection/packer assembly. The annular gas trap comprises a plurality of individual gas traps. Each individual gas trap comprises a series of S-shaped conduits and includes one passageway open to the annulus above the gas trap and another passageway open to the annulus below the gas trap and a third passageway connecting those two passageways. A check valve may be positioned in each individual gas trap to prevent flow of fluids upwardly through the gas trap into the annulus above the gas trap and a seal may be provided on the gas trap to engage a polished bore receptacle formed on the casing string to seal off the space between the casing string and the annular gas trap.

Microprogramme sequence controller

Abstract: A single-chip microprogram sequence controller which can be selectively operated in either an interrupt mode or a trapped mode. In the interrupt mode, the microprogram sequencer allows the currently-executing microinstruction to finish execution before beginning the interrupt routine which services the asynchronous event which requested the interruption of the presently-executing microinstruction stream. In the trap mode, the sequencer aborts the currently-executing microinstruction to avoid an irreversible error which would result if the microinstruction were to finish execution before beginning the routine which services the event which requested trapping of the presently-executing microinstruction. Depending on the mode selected, the sequencer stores the address on a last-in, first-out stack of either the next-following microinstruction or the currently-executing microinstruction for return to the proper point in the microinstruction stream upon completion of the routine which requested the interrupt or the trap.

Thermostatic steam trap

Abstract: A thermostatic steam trap is disclosed in which a control chamber contains an insert enclosing a bellows adapted to force a valve member to a closed position in a direction opposite the normal flow of fluid through the trap together with self-centering means to center and align the valve member with respect to the valve seat.

On the properties and characterization of connection-trap-free schemes

Abstract: We propose a class of database schemes called connection-trap-lree schemes that allows users to retrieve sound and complete information easily and efficiently from the database. We argue that with this class of database schemes, the connection trap problem can be avoided. We present ‘some fundamental properties of this class of schemes. We then characterize the class 01 independent and connection-trapfree schemes when an embedded cover of functional dependencies is assumed. permission to copy without fee all or prrl of this mrlerirl is granted pmi&d that the copies arc not made or distributed for direct commercial advantage, the ACM copyright notice and the titk of the publication and its date appear, and notice is given that copying U by prmiuion of the Association for Computing Machinery. To copy otherw+. or to republish, requires I fee rnd/or specific permission.

Particulates trap in internal-combustion engine

Abstract: PURPOSE:To prevent a crack in a trap while excessive accumulation of particulates due to a lapse of time, by dividing the trap into plural parts with respect to the face in a flow path direction further providing an optional clearance in said divided face so as to form a release space from thermal expansion of the trap. CONSTITUTION:Exhaust, allowed to flow in inlet side opening cells 9A and pass through a porous thin wall 8 and through a neighboring outlet opening cell, is discharged to the downstream side of a trap 10. Here particulates are collectively caught by the porous thin wall 8, but the particulates, if its amount exceeds a certain value, is burnt by a burner, reproducing the trap 10. A crack can be prevented from its generation because a trap 10A and a trap 10B, even if they are thermally expanded by combustion heat when the trap is reproduced, are absorbed by a clearance 11. While a pressure rise of exhaust in the upstream of the trap 10 can be prevented because the exhaust is mostly discharged through the clearance 11 if an accumulation amount of the particulates increase above a certain value.

Washing machine or dishwasher having an adjusting device for setting different water levels

Abstract: In a washing machine or dishwasher, a high water level can be set, if required. An air valve connected to the air trap serves for the setting.

Liquid supply apparatus with level control, and its use in a washing machine

Abstract: 1. A liquid feed device with level control, comprising a manometric switch (18), a compression chamber (21) communicating with said manometric switch through air ducts (22, 23, 25), and a droplet trap (24), characterized in that it includes a droplet trap which is mounted in a region subjected to vibrations or shocks and is provided with means (27) for inhibiting liquid transfer from its chamber to the manometric switch (18).

Vacuum pump and trap combination

Abstract: A vacuum pump and trap combination in which the trap is configured in the manner of a siphon and comprises a tube immersed in trap liquid but having an opening lying above the trap liquid level. The tube has a wall section lying below the trap liquid level and having perforations therein to admit different amounts of trap liquid in relation to the rate of discharge gas flow, thereby preventing frothing of the trap liquid.

Regenerating device for diesel particulate trap member

Abstract: PURPOSE:To prevent an engine from lowering its output power and as well to prevent a trap member from being broken and so forth, by automatically forcing the trapping member to be regenerated when the trapped amount of Diesel particulates exceeds a predetermined value and when a Diesel-engine runs under a predetermined operating condition. CONSTITUTION:A first control means M1 receives a signal from a first detecting means D1 for detecting the trapped amount of particulates, and delivers a signal to a display means 62 for indicating that a Diesel particulate trap member should be regenerated, when the trapped amount exceeds a predetermined value. A second control means M2 receives a signal from a second detecting means D2 for detecting the operating conditions of the above-mentioned first detecting means D1 and a Diesel-engine, and delivers a signal for regenerating the trap member to a spark retarding device 18, an actuator 47a and an exhaust recirculation amount control valve 30 when the trapped amount exceeds a predetermined value and the Diesel-engine runs under a predetermined operating condition.

Pole-mounted bait and trap attachment

Abstract: A pole-mounted bait and trap attachment for use with traps for fur-bearing water animals and having a bait holding portion and a trap holding portion rigidly interconnected with a pole encircling portion, and means for adjustably securing the attachment on a pole-stake.

Control device for cold trap

Abstract: PURPOSE:To control the rate at which impurities are removed from the coolant of a nuclear reactor and to provide a longer life and higher performance of a cold trap by controlling the flow rate and temp. of the coolant in the cold trap according to the concn. of the impurities in said coolant. CONSTITUTION:The signal C for concn. of impurities in a coolant measured in a plugging meter 11 is inputted to a control device 23 for a cold trap. The signal DELTAP of a differential pressure detector 22 for measuring the pressure drop of a cold trap 13 is also inputted to the device 23. The flow rate control signal F from the device 23 and the flow rate signal from an electromagnetic flowmeter 20 are relationally operated by a flow rate control device 21 and the flow rate of the coolant is controlled by an electromagnetic pump 10. A cold trap control signal Tcs is compared with the signal from a cold trap temp. detector 16 and is calculated by a calculator 18. The cooling rate of a cooling system 14 is controlled with a controller 15 by which the temp. of the trap 13 is controlled.

Collecting apparatus of fine particle

Abstract: PURPOSE:To prevent the formation of a large temp. difference at a trap part by firing collected fine particles after the warmth of the trap is confirmed. CONSTITUTION:The opening of a suction throttle valve 12, the pressure on the suction side of a Diesel engine 10, the water temp. of the engine, and the load of the engine are detected respectively by an opening sensor 52, a pressure sensor 54, a temp. sensor 56, and a load sensor 58. And the collected fine particles are fired after the warmth of a trap 20 is confirmed. In this way, the formation of a large temp. difference at the trap part 20 can be prevented, and the damage and failure of the trap is avoided. Accordingly the depend ability on the apparatus is increased.

Audio signal recording and reproducing device

Abstract: PURPOSE:To flat a frequency characteristic by providing two filter circuits to pre-emphasize the horizontal scan frequency component in a compression mode and to de-emphasize said component in a stretching mode respectively. CONSTITUTION:An encoder produces a wave detection output proportional to the level of the output signal of a waiting circuit 8 through a wave detecting circuit 9. Thus a variable gain amplifier 5 is controlled and a dynamic range is compressed. It is possible to obtain the encoder characteristics where a compressing action is suppressed by a half trap 7 at frequencies fV and fH. The decoder performs the de-emphasizing actions through emphasizing circuits 14 and 16. A half trap 17 and a waiting circuit 18 correspond to the trap 7 and the circuit 8 respectively. The disturbance wave components of frequencies fV and fH are attenuated by the trap 7, and the effect of said wave components is attenuated. Then the control voltage is outputted from a wave detecting circuit 19. The general frequency characteristic is flattened.