Abstract: A method for sealing apertures caused by manufacturing processes in micromechanical acceleration sensors is disclosed whereby apertures or recesses, serving for leading the conductor paths out of the oscillation space of an acceleration sensor without causing short circuits, can be sealed in a gas-tight manner in a simple way. The conductor paths establish the conducting connection between junction contacts of the acceleration sensor accessible from the outside with electrodes which are allocated on both sides to the oscillating mass of the acceleration sensor which is also configured as an electrode. The method provides to use an adhesive, which is curable or hardenable by means of light, and in particular, ultraviolet light.

Abstract: The catalytic converter has an axis and a housing having an inlet and an outlet. The housing contains hollow cylindrical catalyst means having an inner surface, an outer surface and passages for the exhaust gas which run from the inner surface to the outer surface. In a cross-section at right angles to the axis, the catalyst means surround an inner space of the catalyst means, with which space the inlet communicates and which space contains a limiting and/or guide member. This has a limiting and/or guide surface which approaches the inner surface of the catalyst means in a direction away from the inlet and distributes the exhaust gas, flowing into the inner space of the catalyst means during operation, uniformly over the passages of the catalyst means.

Abstract: A tool bit for insertion into a tool bit chuck on a manually operated tool used for cutting and/or percussion drilling includes an axially extending chucking shank (1). The chucking shank has two axially extending rotary entrainment grooves (2, 3) open at a free end of the shank and located diametrically opposite one another. The transverse cross-sectional areas of the rotary entrainment grooves (2, 3) are different. A locking element displaceable into a locking groove (4) with axially displaced closed ends affords axial securement of the chucking shank in the chuck. To increase the torque to be transmitted, an axially extending groove (5) open at the free end of the shank is provided with its cross-section transverse of the axial direction corresponding at least to the transverse cross-section of the locking groove (4). Due to this arrangement, faulty locking of the chucking shank in the chuck of conventional commercially available manually-operated tools can be easily recognized by the tool operator.

Abstract: A tool bit for insertion into a tool bit chuck in a manually operated tool used for chiseling and/or percussion drilling has an axially extending chucking shank (1). The chucking shank has two axially extending rotary entrainment grooves (2) open at its end inserted into the chuck and located diametrically opposite one another. In addition, the chucking shank (1) has a locking groove (3) closed at its ends extending transversely of the axial direction and serving to lock the tool bit in the axial direction. Further, the chucking shank (1) has an axially extending groove (4) and an additional axially extending groove (5) for providing greater surface areas in entrainment side flanks for transmitting torque. The axially extending groove (4) extends through a part of the locking groove (3) so that an end face (3a) is formed extending transversely of the axial direction.

Abstract: An internal vibrator comprises a vibrator pipe, attached a transverse pipe transversely to the vibrator pipe at a bottom end region thereof, a vibrator drive, and an imbalance driven by the vibrator drive, wherein the vibrator drive and the imbalance are disposed in the transverse pipe.

Abstract: A complex filter apparatus for correcting a complex valued input television signal Y having the real and the imaginary parts Y.sub.r and Y.sub.i to produce a complex filtered output television signal Z having the real and the imaginary parts Z.sub.r and Z.sub.i comprises: three filters having their respective filter coefficients (C.sub.r +C.sub.i), C.sub.i and Cr; a first adder for producing an output of (Y.sub.r +Y.sub.i); a first subtractor for producing an output of (Y.sub.r -Y.sub.i); a second subtractor for producing an output Y.sub.r (C.sub.r +C.sub.i)-(Y.sub.r +Y.sub.i)C.sub.i as the real part Z.sub.r ; and a third subtractor for generating an output Y.sub.r (C.sub.r +C.sub.i)-(Y.sub.r -Y.sub.i)C.sub.r as the imaginary part Z.sub.i.

Abstract: A intraventricular multielectrode catheter for mapping an activation sequence of a ventricle of a person's heart includes a plurality of solid mapping catheter elements, which have first expandable distal end portions, with a plurality of leads arranged along each of the first portions, and second portions bonded together and forming an inner tubing; a plurality of conductive wires extending along a longitudinal extend of each mapping catheter element and connected with its leads, respectively; a central skeleton element extending through the inner tubing and having at its distal end a tip cap to which the ends of the first portions are attached; and an outer flexible tube which surrounds the mapping catheter elements and is displaceable therealong for exposing a predetermined length of the first portions.

Abstract: An encoding apparatus for coding digital video signals describing a scene having at least one moving object and a stationary background, the digital video signals being represented by a series of video frames, each video frame being divided into a plurality of coding blocks, having a capability of adaptively selecting one of an intra coding technique and a non-intra coding technique to be applied to each coding block, comprises uncovered area detector for, in responsive to a current frame and the previous and next frames thereof in the digital video signals, detecting an uncovered area representing a portion in the current frame, which used to be hidden behind the moving object in the previous frame but becomes visible after a movement of the moving object between the previous and current frames; and coding mode controller for determining, for each of the coding blocks in the current frame, whether the coding block belongs to the uncovered area or not, and applying the intro coding technique to the coding blo

Abstract: A sealed encoder for measuring a relative position of two objects movable relative to each other and including a housing connected with one of the objects, an entrain member, which is located in a slot formed in the housing, for supporting a position-measuring device and connected with another of the objects, and resilient strip-shaped sealing elements formed of an electroconductive non-metallic material.

Abstract: A Briccialdi B flat thumb key mechanism for a woodwind instrument having a B key including a cup part and a lever part and movable around an axle, and a lever rockingly movable around the same axle for transferring a rocking motion to the B key for closing same and to a B flat key also for closing same, with the axle defining an angle of 20.degree.-75.degree. relative to a longitudinal axis of the instrument.

Abstract: A speaker system comprises a speaker for reproducing a sound, a main acoustic radiation housing for transferring the reproduced sound forwardly radiated from the speaker toward a listening location, and an auxiliary acoustic radiation duct attached to a rear portion of the radiation housing for collecting the reproduced sound backwardly emanating from the speaker and transferring it toward the listening location. The radiation housing includes a plurality of axially parallel partitions formed therein for providing acoustic waveguides corresponding to the number of notes of an octave. The waveguides are provided with acoustic separating holes formed at a side wall of the radiation housing, which are serially arranged in conformity with the notes of the octave.

Abstract: The invention relates to polymethacrylate ester/polysiloxane block copolymer of the ABA or AB type, A being a polymethacrylate ester block and B a polysiloxane block. The invention furthermore relates to a method for the synthesis of such block copolymers as well as to a method to modify synthetic resins, particularly those based on (meth)acrylates, by adding an effective amount of the inventive block copolymer. The invention also relates to the block copolymer as additives for organic lacquer and varnish systems.

Abstract: A venting arrangement for a magnetically supported vacuum pump which has a high speed rotor, wherein the load carrying capacity of the axial magnetic bearing is increased in the course of the venting process by reducing the gap between the axial support disk and the axial magnet in order to carry the additional forces caused by the venting process. In normal operation, the gap is adjusted to an upper limit value.

Abstract: A temperature sensor arrangement including a temperature sensor having a measuring element formed as a temperature-dependent variable resistor, and an electronic circuit for function checking of the temperature sensor. The electronic circuit includes a temperature-independent test resistor arranged parallel to the measuring element, first and second semiconductor switches arranged in current circuits of the measuring element and the test resistor, respectively, and a control conductor and a voltage converting element for alternatively connecting the two semiconductor switches to an auxiliary input of the temperature sensor.

Abstract: A tool bit for insertion into a tool bit chuck in a manually operated tool, used for cutting and/or percussion drilling, has an axially extending chucking shank (2) with a free end. The chucking shank (2) has two locking grooves (6, 7) located diametrically opposite one another and closed at their ends spaced apart in the axial direction. In addition, the chucking shank has two axially extending rotary entrainment grooves (8, 9) disposed diametrically opposite one another and open at the free end. The transverse cross-sectional areas of the rotary entrainment grooves (8, 9) are different. To increase the transmittable torque, an additional axially extending groove (11) open at the free end of the chucking shank extends through and is positioned asymmetrically to one of the locking grooves (7). An end shoulder face (7a) for axially securing the tool bit is formed in the end region of the locking groove located laterally outwardly from the axially extending groove (11).

Abstract: A heating apparatus includes at least a pair of regenerative burner units having a fuel injection nozzle and a heat regenerator provided for a combustion air supply path. One regenerative burner unit is supplied with fuel through a fuel shut-off valve and a fuel change-over valve, and supplied with combustion air through a supply and exhaust change-over valve to perform combustion operation. The other regenerative burner unit performs heat regenerating operation by passing a combustion waste gas. Operations of the fuel shut-off valve, the fuel change-over valve and the supply and exhaust change-over valve are controlled depending upon an operation parameter of the heating apparatus.

Abstract: An apparatus for adaptively demultiplexing an input bit stream for use in a decoding system includes a buffer module having a plurality of buffers for temporarily storing the bit stream, a flag state detector for detecting the number of the buffers that exhibits the full state or the empty state and a buffer module controller for adaptively controlling the overflow or the underflow of the buffers, based on the information from the flag state detector.

Abstract: A round baling press for agricultural stalk grains is disclosed which comprises revolving pressing elements wherein the revolving pressing elements include at least one of rollers, conveyors belts, conveyor bar chains and similar items, and further wherein the revolving pressing elements bound a pressing space. The revolving pressing elements are driven on their side facing the pressing space in a region of a commodity inlet aperture so as to revolve from a bottom to a top. The round baling press also comprises a revolving conveyor arrangement, wherein the revolving conveyor arrangement is driven in a same peripheral direction as the pressing elements. The revolving conveyor arrangement is disposed between a pickup and the commodity inlet aperture. The conveyor arrangement further comprises a conveyor roller having rigid prongs which are disposed directly upstream of the commodity inlet aperture and above a supply channel base so as to be rotatably fixed in a supply channel.

Abstract: A water vapor-permeable, waterproof adhesive polymer and a linear polyurethane-urea polymer, either alone or in combination with one another, are utilized to coat various textile materials. The compositions of these polymers as well as various methods of coating the textile materials are described.