Abstract: A cylindrical, iron-based sintered slug comprising an iron-based sintered alloy having a surface hardness represented by an HRB of 40-90 is formed such that its interior porosity is 5% or less but greater than 0%, the porosities of both its surface layer regions lying at most 1 mm below its outer and inner surfaces are fixed at at least 3% or less but greater than 0% and the distribution of pores in each of the surface layers is decreased gradually toward the surface.

Abstract: An electrically driven diaphragm suction or pressure pump includes an oscillating anchor magnet that serves as the driving motor. The oscillating anchor magnet has a magnet coil (16), which is concentrically enclosed by a ferromagnetic closing cage (19) which is discontinuous in a circumferential direction. In the interior space of the magnet coil (16), the closing cage forms two pole rings (25,26), separated from one another in the axial direction by a circular slot (27). The closing cage is tightly arranged in a case (28,29). To obtain a high efficiency and high pump capacities, the central anchor shank (39), which is connected to the pump diaphragm, of the oscillating anchor (8), which is provided with a ferromagnetic solenoid plunger (38), is attached to two leaf-type vibratory springs (42, 43), each of which carries and centers on one side an end section projecting out of the closing cage (19) of the magnet coil (16).

Abstract: A rotating mold is fed with a flowable mixture of an inorganic filler material powder and a polyester resin for the purpose of generating or building up individual layers. By selecting the rotating speed during the layer buildup a more or less pronounced separation between resin and filler material is produced inside the layer, the value of the separation being selected in accordance with the specific application the component produced is intended to be used for. Subsequently the layer is fed cut glass fibers made to penetrate at least into the innermost resin-enriched region of the generated layer. Owing to this rotational-speed-controlled distribution of filler material and resin inside the layers, larger values of mechanical strength may be obtained with reduced glass requirements. Any "strain-corrosion" may be avoided by using filler materials containing carbonate.

Abstract: A thread monitoring arrangement for monitoring sewing thread at different areas along the path of the thread inducing a switching process for signalling or stopping the sewing process upon the occurrence of thread disturbance. The thread monitoring arrangement includes first sensor units positioned in an area between a thread reserve and an associated tensioning device. Second sensor units are provided in the area between the tensioning device and the associated stitch formation site for sending signals in the case of thread disturbance. A monitoring switching arrangement is provided, evaluating signals from the sensor units differently to induce different switching processes, either alerting the operator or stopping the sewing process, after a predetermined time or immediately.

Abstract: An engineering method of providing a lining onto the internal face of conduits for gas, city water, etc. that are buried underground. This lining work shall entirely be done from the portions exposed above ground. The distance of the supply pipe to the service tee is measured. The lining tube is set to a length that is slightly longer than this distance. The lining tube is turned inside out inside the supply pipe. As a result, a slightly longer length of non-reverse portion is left inside the supply pipe by the service tee. This non-reverse portion is helpful when cutting the rewinding tape that is tied to the lining tube after the insertion of a cutter. Next the heating tube shall be reversed similarly, and a hot water hose is inserted for circulating hot water in the heating tube. The aforesaid lining tube coated with the thermosetting adhesive is bonded onto the internal face of supply pipe. Next the heating tube is pulled out and the rewinding tape of the lining tube is cut and removed.

Abstract: Timing apparatus for a four-stroke engine with at least a shaft (2) of cams (7) located over the head of the cylinders and with the cams (7) acting directly on the valves (4), wherein the rotary motion of each shaft (2) of cams (7) is derived from a transmission shaft (1) parallel to the camshaft and driven by the engine crankshaft through a pair of identical gears (3,30) which are eccentrically keyed, one (3) on the transmission shaft (1) and the other (30) on the shaft (2) of cams (7), and are also 180.degree.-out-of-phase to one another, and with the cam (7) which is provided for the opening of the relevant valve (4) keyed on the shaft (2) of cams (7) having the maximum radius (r2) lift in phase with the minimum radius (R2) of rotation of the corresponding gear (30) eccentrically keyed on he same shaft (2) of cams (7).

Abstract: An anesthetic metering device with a bypass stream 5 passed from a gas inlet opening 2 via a bypass valve 3 to a gas discharge opening 4 and with a vaporizer chamber stream 7 flowing from a vaporizer chamber 6 via an adjusting device. Accurate metering is possible even in the case of anesthetics with low boiling points by manufacturing the vaporizer chamber 6 at least at the saturation vapor pressure of the anesthetic 22. The adjusting device includes a differential pressure transducer 9 connected on both sides of the bypass valve 3 and a metering valve 10, wherein the metering valve 10 is actuated by the output quantity 11 of the differential pressure transducer 9 via a proportional member 12 so that the concentration is adjusted via the variable transmission ratio of the proportional member 12.

Abstract: The present invention pertains to a device for removing toxic substances, e.g., dioxins and furans, from flue gases, e.g., a refuse incinerator plant, prior to entry into the smokestack. To adsorb these toxic aromatic substances, activated carbon is mixed with 30-40 vol. % water in a filter vessel, and the flue gases in the form of chains of fine bubbles are passed through the activated carbon-water mixture. The filter vessel 1 has a perforated partition 13 acting as a gas distributor. The activated carbon sludge saturated with toxic substances is drawn off and replaced by correspondingly adding dry activated carbon and water.

Abstract: A regulator for pneumatic system comprising a connecting bracket for connecting other air conditioning units to a regulator body. Because of this connecting bracket, the air conditioning units to be connected to each other can be modularized. The connecting bracket has, at its both ends, a pair of projection-like pawl sections which are engageable respectively with engaging sections formed respectively on outer peripheral surfaces of the other air conditioning units. Incorporated in the connecting bracket is a pressure gage for detecting secondary pneumatic pressure within the regulator body. The pressure gage comprises a pressure detecting section, a pressure display section, pressure setting section and an abnormality alarm section.

Abstract: In a process for producing combination patterns consisting of a plurality of individual sewing patterns by means of an electronically controlled sewing machine, which has a memory for the greatly different individual sewing patterns as well as for a plurality of individual stitches with different feed directions, wherein at least one individual stitch is prepared in a selectable manner between the formation of a last needle touchdown of a first individual sewing pattern and the formation of a first needle touchdown of a second individual sewing pattern. The fabric being sewn is fed at least partially at right angles to the normal feed direction or both in the normal feed direction and at right angles to this normal feed direction for a predeterminable number of individual stitches in order to produce a combination pattern of increased width.

Abstract: The present invention is directed to a technique which comprises the steps of stopping the rotation of a treating drum in a deodorizing step, introducing the outside air into a treating tank through an upper opening provided in the upper portion of the treating tank or the upper portion of a recovery air duct, simultaneously exhausting a solvent gas from the treating tank through a lower opening provided in the lower portion of the treating tank or a button trap portion so slowly as not to agitate the solvent gas in the treating tank by an exhaust means connected to a solvent recovery device in the condition that the treating drum is stopped, in order to replace the solvent gas in the treating tank with the outside air, and reusing the solvent gas through the solvent recovery device once or several times. In addition, the present invention is further directed to an improvement of the above-mentioned technique.

Abstract: An ac motor comprises a dc micromotor with terminals passing through an insulating end bell to receive dc current from a rectifier module. The flat surface of the end bell contains fixing grooves and a hole. The rectifier module is fitted within the hole. Fixing bosses are also provided on the end surface of the end bell. An input terminal plate is provided with holes for engaging the four bosses. The input terminal plate is provided with cut grooves which delimit four input terminal portions. The input terminal plate also has a middle hole. The input terminal plate is pressed into engagement with the four bosses resulting in the input terminal plate separating into four input terminal pieces, which are bent into the fixing grooves and also bent into the hole to fixedly fit the input terminal pieces to the end bell. Terminals of the rectifier module are electrically and mechanically connected to be held by the input terminal pieces.

Abstract: A moisture indicator for indicating the state of moisture loading of an oxygen-releasing chemical in a respiratory protection device which contains the peroxide of an alkali metal as the substance is to be improved such that it will indicate an irreversible and clearly recognizable color change and will respond to the intrusion of even small amounts of moisture. To accomplish this task, the substance contains as the reactive substance an additive in the form of an alkali metal ozonide that engages in a color reaction with moisture present in the air.

Abstract: An engine-driven power generating system comprising a bridge circuit section in which a low-frequency switching elements driven alternately by low-frequency drive signals, and high-frequency switching elements driven by high-frequency drive signals during the ON period of the low-frequency switching elements are connected in a bridge network, and an inverter circuit section having a drive signal supply circuit for supplying low-frequency and high-frequency drive signals are each supplied to the low-frequency and high-frequency switching elements that form a pair; the a-c voltage generated by an engine-driven a-c generator is converted into d-c voltage that is in turn converted into a predetermined level of low-frequency a-c voltage; characterized in that an emergency relay circuit device for protecting the engine-driven power generating system against abnormal operating condition.

Abstract: A method for providing uniform thermal output from a glow plug for use in an auxiliary heater of a motor vehicle having either a 12 volt or 24 volt power supply without the use of multiplier resistors utilizes a glow plug having two heating rods having the same electrical resistance and three electrical terminals. One end of the first and second rods are permanently electrically connected respectively to the first and third terminals and the other end of the first and second rods are permanently electrically connected to the second terminal. The vehicle voltage is determined and if the 12 volt supply is present the first and second terminals are connected to the power supply and the first and third terminals are electrically connected to each other to place the heating rods in parallel. If a 24 volt supply is present, the first and third terminals are connected to the power supply with the second terminal left in connected thereby placing the heating rods in series.

Abstract: A fuel feed pump for a motor vehicle, wherein a liquid sealing portion is formed in a position close to an impeller in a casing, an exhaust port is opened in the intermediate portion of the liquid sealing portion in a manner to communicate the inner space of the liquid sealing portion with the outside of the casing. The casing is opened therein with a deairing hole for communicating the liquid sealing portion with the outside of the casing. A deairing groove is formed at least on the upper end surface of the casing. One end of the deairing groove is communicated with the upper space of a generally annular groove path and the other end is communicated with the deairing hole, traversing the liquid seal portion.

Abstract: A substrate web (1), which is to be laminated on both sides with laminating webs (10) and (18), is brought together with and joined to a laminating web (10) coated with an adhesive film (8) in a roller gap (2) formed by two counterrollers (3) and (4). The other side of the substrate web (1) receives an adhesive film (9) from the second counterroller (4) in the roller gap (2). The second laminating web (18) is brought together with and bonded to the side of the substrate web (1), which side is coated with the adhesive film (9), in a roller gap (16) formed by a first laminating roller (15) and a second laminating roller (17).

Abstract: For the detection of the wavefront of a beam, based on a Mach-Zehnder interferometric configuration, synchronous detection - which replaces a temporal scan or a spatial dimension of the array of sensors - is obtained by means of frequency coding of the fringes present in the function I(x,y).